British Institute of PCN ? Testing
Time-of-Flight Diffraction Level 1 Exam
,1. During a pre-task planning review, which action best addresses a concern involving Signal, indication or image interpretation and separation of relevant from
false responses with decisions and? Case EB-2709-0001: 9 checks are complete, 1 item(s) remain open, 5 supporting record(s) are available, the last review
was 11 hour(s) ago, and the current result differs from the prior baseline by 10 unit(s).
A. Select the most favorable result from repeated calculations without investigating the variation.
B. Recheck the inputs, units, assumptions, and limits for Signal, indication or image interpretation and separation of relevant from false responses; recalculate
independently and document the verified result before proceeding.
C. Average the conflicting results and accept the midpoint without checking the source data.
D. Use the previous calculation unchanged even though one or more current inputs have changed.
Correct Answer: B
Explanation: The best answer verifies Signal, indication or image interpretation and separation of relevant from false against current requirements and evidence
before acceptance. With 1 open item(s), 5 supporting record(s), and a 10-unit change from baseline, a traceable foundational decision should resolve the
discrepancy rather than defer, bypass, or redefine the control.
2. During a pre-task planning review, which action best addresses a concern involving Code, specification and acceptance-criteria application without
exceeding authorization for safe, accurate work in? Case EB-2709-0002: 7 checks are complete, 2 item(s) remain open, 2 supporting record(s) are available,
the last review was 24 hour(s) ago, and the current result differs from the prior baseline by 8 unit(s).
A. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Code, specification and acceptance-criteria application without
exceeding authorization for; repeat or confirm the test only after controls are valid.
B. Use an expired or unverified reference because the difference is expected to be small.
C. Change the test sensitivity or acceptance limit without authorization to reduce false indications.
D. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
Correct Answer: A
Explanation: The best answer verifies Code, specification and acceptance-criteria application without exceeding authorization against current requirements and
evidence before acceptance. With 2 open item(s), 2 supporting record(s), and a 8-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
3. During a pre-task planning review, which action best addresses a concern involving Equipment calibration, reference standards, control checks and traceable
records through realistic nondestructive? Case EB-2709-0003: 5 checks are complete, 3 item(s) remain open, 6 supporting record(s) are available, the last
review was 13 hour(s) ago, and the current result differs from the prior baseline by 6 unit(s).
A. Use the previous calculation unchanged even though one or more current inputs have changed.
B. Recheck the inputs, units, assumptions, and limits for Equipment calibration, reference standards, control checks and traceable records through; recalculate
independently and document the verified result before proceeding.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Adjust an input until the result falls within the target range, then record only the final value.
Correct Answer: B
Explanation: The best answer verifies Equipment calibration, reference standards, control checks and traceable records against current requirements and
evidence before acceptance. With 3 open item(s), 6 supporting record(s), and a 6-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
4. During a pre-task planning review, which action best addresses a concern involving Safety controls for radiation, chemicals, electricity, pressure or magnetic
fields as applicable with emphasis on? Case EB-2709-0004: 3 checks are complete, 4 item(s) remain open, 3 supporting record(s) are available, the last review
was 2 hour(s) ago, and the current result differs from the prior baseline by 4 unit(s).
A. Average the conflicting results and accept the midpoint without checking the source data.
B. Select the most favorable result from repeated calculations without investigating the variation.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Recheck the inputs, units, assumptions, and limits for Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as; recalculate
independently and document the verified result before proceeding.
Correct Answer: D
Explanation: The best answer verifies Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as against current requirements and
evidence before acceptance. With 4 open item(s), 3 supporting record(s), and a 4-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
5. During a pre-task planning review, which action best addresses a concern involving Reporting location, size, orientation, confidence, limitations and
examination coverage for defensible calculations? Case EB-2709-0005: 10 checks are complete, 1 item(s) remain open, 7 supporting record(s) are available,
the last review was 15 hour(s) ago, and the current result differs from the prior baseline by 2 unit(s).
A. Recheck the inputs, units, assumptions, and limits for Reporting location, size, orientation, confidence, limitations and examination coverage for; recalculate
independently and document the verified result before proceeding.
B. Adjust an input until the result falls within the target range, then record only the final value.
C. Proceed using an estimate even though the approved method and current inputs are available.
D. Select the most favorable result from repeated calculations without investigating the variation.
Correct Answer: A
Explanation: The best answer verifies Reporting location, size, orientation, confidence, limitations and examination coverage against current requirements and
evidence before acceptance. With 1 open item(s), 7 supporting record(s), and a 2-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
British Institute of PCN ? Testing Time-of-Flight Diffraction Level 1 Exam
Page 2
,6. During a pre-task planning review, which action best addresses a concern involving Personnel responsibilities, written instructions, supervision and
escalation of ambiguous findings including? Case EB-2709-0006: 8 checks are complete, 2 item(s) remain open, 4 supporting record(s) are available, the last
review was 4 hour(s) ago, and the current result differs from the prior baseline by 19 unit(s).
A. Ignore equipment or environmental checks when the operator is experienced with the method.
B. Accept the result if it matches the expected outcome, even when a control check is invalid.
C. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Personnel responsibilities, written instructions, supervision and
escalation of ambiguous; repeat or confirm the test only after controls are valid.
D. Use an expired or unverified reference because the difference is expected to be small.
Correct Answer: C
Explanation: The best answer verifies Personnel responsibilities, written instructions, supervision and escalation of against current requirements and evidence
before acceptance. With 2 open item(s), 4 supporting record(s), and a 19-unit change from baseline, a traceable foundational decision should resolve the
discrepancy rather than defer, bypass, or redefine the control.
7. During a pre-task planning review, which action best addresses a concern involving Discontinuity formation, material processing history and service-related
damage mechanisms to support reliable? Case EB-2709-0007: 6 checks are complete, 3 item(s) remain open, 1 supporting record(s) are available, the last
review was 17 hour(s) ago, and the current result differs from the prior baseline by 17 unit(s).
A. Report only the final indication and omit the conditions that may have affected the test.
B. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
C. Accept the result if it matches the expected outcome, even when a control check is invalid.
D. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Discontinuity formation, material processing history and
service-related damage mechanisms; repeat or confirm the test only after controls are valid.
Correct Answer: D
Explanation: The best answer verifies Discontinuity formation, material processing history and service-related damage against current requirements and
evidence before acceptance. With 3 open item(s), 1 supporting record(s), and a 17-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
8. During a pre-task planning review, which action best addresses a concern involving Communications, airspace procedures and safe coordination with air
traffic services integrated across the tasks? Case EB-2709-0008: 4 checks are complete, 4 item(s) remain open, 5 supporting record(s) are available, the last
review was 6 hour(s) ago, and the current result differs from the prior baseline by 15 unit(s).
A. Use an expired or unverified reference because the difference is expected to be small.
B. Change the test sensitivity or acceptance limit without authorization to reduce false indications.
C. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Communications, airspace procedures and safe coordination
with air traffic services; repeat or confirm the test only after controls are valid.
D. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
Correct Answer: C
Explanation: The best answer verifies Communications, airspace procedures and safe coordination with air traffic services against current requirements and
evidence before acceptance. With 4 open item(s), 5 supporting record(s), and a 15-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
9. During a pre-task planning review, which action best addresses a concern involving Aerodynamic forces, stability, control and aircraft performance
relationships within the nondestructive testing and? Case EB-2709-0009: 2 checks are complete, 1 item(s) remain open, 2 supporting record(s) are available,
the last review was 19 hour(s) ago, and the current result differs from the prior baseline by 13 unit(s).
A. Use the previous calculation unchanged even though one or more current inputs have changed.
B. Ignore unit or assumption differences if the final number appears reasonable.
C. Recheck the inputs, units, assumptions, and limits for Aerodynamic forces, stability, control and aircraft performance relationships within the; recalculate
independently and document the verified result before proceeding.
D. Adjust an input until the result falls within the target range, then record only the final value.
Correct Answer: C
Explanation: The best answer verifies Aerodynamic forces, stability, control and aircraft performance relationships within against current requirements and
evidence before acceptance. With 1 open item(s), 2 supporting record(s), and a 13-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
10. During a pre-task planning review, which action best addresses a concern involving Entry-level terminology, component recognition and safe completion of
routine tasks as applied to nondestructive? Case EB-2709-0010: 9 checks are complete, 2 item(s) remain open, 6 supporting record(s) are available, the last
review was 8 hour(s) ago, and the current result differs from the prior baseline by 11 unit(s).
A. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
B. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Entry-level terminology, component recognition and safe
completion of routine tasks as; repeat or confirm the test only after controls are valid.
C. Report only the final indication and omit the conditions that may have affected the test.
D. Ignore equipment or environmental checks when the operator is experienced with the method.
Correct Answer: B
Explanation: The best answer verifies Entry-level terminology, component recognition and safe completion of routine tasks as against current requirements and
evidence before acceptance. With 2 open item(s), 6 supporting record(s), and a 11-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
British Institute of PCN ? Testing Time-of-Flight Diffraction Level 1 Exam
Page 3
, 11. A reviewer finds conflicting evidence about Signal, indication or image interpretation and separation of relevant from false responses with decisions and
during a pre-task planning review. What should happen first? Case EB-2709-0011: 7 checks are complete, 3 item(s) remain open, 3 supporting record(s) are
available, the last review was 21 hour(s) ago, and the current result differs from the prior baseline by 9 unit(s).
A. Ignore unit or assumption differences if the final number appears reasonable.
B. Confirm source data and allowable limits for Signal, indication or image interpretation and separation of relevant from false responses, repeat the calculation
with an independent check, and resolve any difference before acceptance.
C. Use the previous calculation unchanged even though one or more current inputs have changed.
D. Proceed using an estimate even though the approved method and current inputs are available.
Correct Answer: B
Explanation: The best answer verifies Signal, indication or image interpretation and separation of relevant from false against current requirements and evidence
before acceptance. With 3 open item(s), 3 supporting record(s), and a 9-unit change from baseline, a traceable foundational decision should resolve the
discrepancy rather than defer, bypass, or redefine the control.
12. A reviewer finds conflicting evidence about Code, specification and acceptance-criteria application without exceeding authorization for safe, accurate work
in during a pre-task planning review. What should happen first? Case EB-2709-0012: 5 checks are complete, 4 item(s) remain open, 7 supporting record(s) are
available, the last review was 10 hour(s) ago, and the current result differs from the prior baseline by 7 unit(s).
A. Report only the final indication and omit the conditions that may have affected the test.
B. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
C. Accept the result if it matches the expected outcome, even when a control check is invalid.
D. Check calibration and method controls affecting Code, specification and acceptance-criteria application without exceeding authorization for, investigate the
unexpected indication or result, and document a defensible disposition.
Correct Answer: D
Explanation: The best answer verifies Code, specification and acceptance-criteria application without exceeding authorization against current requirements and
evidence before acceptance. With 4 open item(s), 7 supporting record(s), and a 7-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
13. A reviewer finds conflicting evidence about Equipment calibration, reference standards, control checks and traceable records through realistic
nondestructive during a pre-task planning review. What should happen first? Case EB-2709-0013: 3 checks are complete, 1 item(s) remain open, 4 supporting
record(s) are available, the last review was 23 hour(s) ago, and the current result differs from the prior baseline by 5 unit(s).
A. Proceed using an estimate even though the approved method and current inputs are available.
B. Confirm source data and allowable limits for Equipment calibration, reference standards, control checks and traceable records through, repeat the calculation
with an independent check, and resolve any difference before acceptance.
C. Adjust an input until the result falls within the target range, then record only the final value.
D. Average the conflicting results and accept the midpoint without checking the source data.
Correct Answer: B
Explanation: The best answer verifies Equipment calibration, reference standards, control checks and traceable records against current requirements and
evidence before acceptance. With 1 open item(s), 4 supporting record(s), and a 5-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
14. A reviewer finds conflicting evidence about Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as applicable with emphasis on
during a pre-task planning review. What should happen first? Case EB-2709-0014: 10 checks are complete, 2 item(s) remain open, 1 supporting record(s) are
available, the last review was 12 hour(s) ago, and the current result differs from the prior baseline by 3 unit(s).
A. Use the previous calculation unchanged even though one or more current inputs have changed.
B. Confirm source data and allowable limits for Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as, repeat the calculation with an
independent check, and resolve any difference before acceptance.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Adjust an input until the result falls within the target range, then record only the final value.
Correct Answer: B
Explanation: The best answer verifies Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as against current requirements and
evidence before acceptance. With 2 open item(s), 1 supporting record(s), and a 3-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
15. A reviewer finds conflicting evidence about Reporting location, size, orientation, confidence, limitations and examination coverage for defensible
calculations during a pre-task planning review. What should happen first? Case EB-2709-0015: 8 checks are complete, 3 item(s) remain open, 5 supporting
record(s) are available, the last review was 1 hour(s) ago, and the current result differs from the prior baseline by 1 unit(s).
A. Average the conflicting results and accept the midpoint without checking the source data.
B. Select the most favorable result from repeated calculations without investigating the variation.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Confirm source data and allowable limits for Reporting location, size, orientation, confidence, limitations and examination coverage for, repeat the calculation
with an independent check, and resolve any difference before acceptance.
Correct Answer: D
Explanation: The best answer verifies Reporting location, size, orientation, confidence, limitations and examination coverage against current requirements and
evidence before acceptance. With 3 open item(s), 5 supporting record(s), and a 1-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
British Institute of PCN ? Testing Time-of-Flight Diffraction Level 1 Exam
Page 4
Time-of-Flight Diffraction Level 1 Exam
,1. During a pre-task planning review, which action best addresses a concern involving Signal, indication or image interpretation and separation of relevant from
false responses with decisions and? Case EB-2709-0001: 9 checks are complete, 1 item(s) remain open, 5 supporting record(s) are available, the last review
was 11 hour(s) ago, and the current result differs from the prior baseline by 10 unit(s).
A. Select the most favorable result from repeated calculations without investigating the variation.
B. Recheck the inputs, units, assumptions, and limits for Signal, indication or image interpretation and separation of relevant from false responses; recalculate
independently and document the verified result before proceeding.
C. Average the conflicting results and accept the midpoint without checking the source data.
D. Use the previous calculation unchanged even though one or more current inputs have changed.
Correct Answer: B
Explanation: The best answer verifies Signal, indication or image interpretation and separation of relevant from false against current requirements and evidence
before acceptance. With 1 open item(s), 5 supporting record(s), and a 10-unit change from baseline, a traceable foundational decision should resolve the
discrepancy rather than defer, bypass, or redefine the control.
2. During a pre-task planning review, which action best addresses a concern involving Code, specification and acceptance-criteria application without
exceeding authorization for safe, accurate work in? Case EB-2709-0002: 7 checks are complete, 2 item(s) remain open, 2 supporting record(s) are available,
the last review was 24 hour(s) ago, and the current result differs from the prior baseline by 8 unit(s).
A. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Code, specification and acceptance-criteria application without
exceeding authorization for; repeat or confirm the test only after controls are valid.
B. Use an expired or unverified reference because the difference is expected to be small.
C. Change the test sensitivity or acceptance limit without authorization to reduce false indications.
D. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
Correct Answer: A
Explanation: The best answer verifies Code, specification and acceptance-criteria application without exceeding authorization against current requirements and
evidence before acceptance. With 2 open item(s), 2 supporting record(s), and a 8-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
3. During a pre-task planning review, which action best addresses a concern involving Equipment calibration, reference standards, control checks and traceable
records through realistic nondestructive? Case EB-2709-0003: 5 checks are complete, 3 item(s) remain open, 6 supporting record(s) are available, the last
review was 13 hour(s) ago, and the current result differs from the prior baseline by 6 unit(s).
A. Use the previous calculation unchanged even though one or more current inputs have changed.
B. Recheck the inputs, units, assumptions, and limits for Equipment calibration, reference standards, control checks and traceable records through; recalculate
independently and document the verified result before proceeding.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Adjust an input until the result falls within the target range, then record only the final value.
Correct Answer: B
Explanation: The best answer verifies Equipment calibration, reference standards, control checks and traceable records against current requirements and
evidence before acceptance. With 3 open item(s), 6 supporting record(s), and a 6-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
4. During a pre-task planning review, which action best addresses a concern involving Safety controls for radiation, chemicals, electricity, pressure or magnetic
fields as applicable with emphasis on? Case EB-2709-0004: 3 checks are complete, 4 item(s) remain open, 3 supporting record(s) are available, the last review
was 2 hour(s) ago, and the current result differs from the prior baseline by 4 unit(s).
A. Average the conflicting results and accept the midpoint without checking the source data.
B. Select the most favorable result from repeated calculations without investigating the variation.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Recheck the inputs, units, assumptions, and limits for Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as; recalculate
independently and document the verified result before proceeding.
Correct Answer: D
Explanation: The best answer verifies Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as against current requirements and
evidence before acceptance. With 4 open item(s), 3 supporting record(s), and a 4-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
5. During a pre-task planning review, which action best addresses a concern involving Reporting location, size, orientation, confidence, limitations and
examination coverage for defensible calculations? Case EB-2709-0005: 10 checks are complete, 1 item(s) remain open, 7 supporting record(s) are available,
the last review was 15 hour(s) ago, and the current result differs from the prior baseline by 2 unit(s).
A. Recheck the inputs, units, assumptions, and limits for Reporting location, size, orientation, confidence, limitations and examination coverage for; recalculate
independently and document the verified result before proceeding.
B. Adjust an input until the result falls within the target range, then record only the final value.
C. Proceed using an estimate even though the approved method and current inputs are available.
D. Select the most favorable result from repeated calculations without investigating the variation.
Correct Answer: A
Explanation: The best answer verifies Reporting location, size, orientation, confidence, limitations and examination coverage against current requirements and
evidence before acceptance. With 1 open item(s), 7 supporting record(s), and a 2-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
British Institute of PCN ? Testing Time-of-Flight Diffraction Level 1 Exam
Page 2
,6. During a pre-task planning review, which action best addresses a concern involving Personnel responsibilities, written instructions, supervision and
escalation of ambiguous findings including? Case EB-2709-0006: 8 checks are complete, 2 item(s) remain open, 4 supporting record(s) are available, the last
review was 4 hour(s) ago, and the current result differs from the prior baseline by 19 unit(s).
A. Ignore equipment or environmental checks when the operator is experienced with the method.
B. Accept the result if it matches the expected outcome, even when a control check is invalid.
C. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Personnel responsibilities, written instructions, supervision and
escalation of ambiguous; repeat or confirm the test only after controls are valid.
D. Use an expired or unverified reference because the difference is expected to be small.
Correct Answer: C
Explanation: The best answer verifies Personnel responsibilities, written instructions, supervision and escalation of against current requirements and evidence
before acceptance. With 2 open item(s), 4 supporting record(s), and a 19-unit change from baseline, a traceable foundational decision should resolve the
discrepancy rather than defer, bypass, or redefine the control.
7. During a pre-task planning review, which action best addresses a concern involving Discontinuity formation, material processing history and service-related
damage mechanisms to support reliable? Case EB-2709-0007: 6 checks are complete, 3 item(s) remain open, 1 supporting record(s) are available, the last
review was 17 hour(s) ago, and the current result differs from the prior baseline by 17 unit(s).
A. Report only the final indication and omit the conditions that may have affected the test.
B. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
C. Accept the result if it matches the expected outcome, even when a control check is invalid.
D. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Discontinuity formation, material processing history and
service-related damage mechanisms; repeat or confirm the test only after controls are valid.
Correct Answer: D
Explanation: The best answer verifies Discontinuity formation, material processing history and service-related damage against current requirements and
evidence before acceptance. With 3 open item(s), 1 supporting record(s), and a 17-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
8. During a pre-task planning review, which action best addresses a concern involving Communications, airspace procedures and safe coordination with air
traffic services integrated across the tasks? Case EB-2709-0008: 4 checks are complete, 4 item(s) remain open, 5 supporting record(s) are available, the last
review was 6 hour(s) ago, and the current result differs from the prior baseline by 15 unit(s).
A. Use an expired or unverified reference because the difference is expected to be small.
B. Change the test sensitivity or acceptance limit without authorization to reduce false indications.
C. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Communications, airspace procedures and safe coordination
with air traffic services; repeat or confirm the test only after controls are valid.
D. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
Correct Answer: C
Explanation: The best answer verifies Communications, airspace procedures and safe coordination with air traffic services against current requirements and
evidence before acceptance. With 4 open item(s), 5 supporting record(s), and a 15-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
9. During a pre-task planning review, which action best addresses a concern involving Aerodynamic forces, stability, control and aircraft performance
relationships within the nondestructive testing and? Case EB-2709-0009: 2 checks are complete, 1 item(s) remain open, 2 supporting record(s) are available,
the last review was 19 hour(s) ago, and the current result differs from the prior baseline by 13 unit(s).
A. Use the previous calculation unchanged even though one or more current inputs have changed.
B. Ignore unit or assumption differences if the final number appears reasonable.
C. Recheck the inputs, units, assumptions, and limits for Aerodynamic forces, stability, control and aircraft performance relationships within the; recalculate
independently and document the verified result before proceeding.
D. Adjust an input until the result falls within the target range, then record only the final value.
Correct Answer: C
Explanation: The best answer verifies Aerodynamic forces, stability, control and aircraft performance relationships within against current requirements and
evidence before acceptance. With 1 open item(s), 2 supporting record(s), and a 13-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
10. During a pre-task planning review, which action best addresses a concern involving Entry-level terminology, component recognition and safe completion of
routine tasks as applied to nondestructive? Case EB-2709-0010: 9 checks are complete, 2 item(s) remain open, 6 supporting record(s) are available, the last
review was 8 hour(s) ago, and the current result differs from the prior baseline by 11 unit(s).
A. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
B. Verify the procedure, equipment status, environmental conditions, and acceptance criteria for Entry-level terminology, component recognition and safe
completion of routine tasks as; repeat or confirm the test only after controls are valid.
C. Report only the final indication and omit the conditions that may have affected the test.
D. Ignore equipment or environmental checks when the operator is experienced with the method.
Correct Answer: B
Explanation: The best answer verifies Entry-level terminology, component recognition and safe completion of routine tasks as against current requirements and
evidence before acceptance. With 2 open item(s), 6 supporting record(s), and a 11-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
British Institute of PCN ? Testing Time-of-Flight Diffraction Level 1 Exam
Page 3
, 11. A reviewer finds conflicting evidence about Signal, indication or image interpretation and separation of relevant from false responses with decisions and
during a pre-task planning review. What should happen first? Case EB-2709-0011: 7 checks are complete, 3 item(s) remain open, 3 supporting record(s) are
available, the last review was 21 hour(s) ago, and the current result differs from the prior baseline by 9 unit(s).
A. Ignore unit or assumption differences if the final number appears reasonable.
B. Confirm source data and allowable limits for Signal, indication or image interpretation and separation of relevant from false responses, repeat the calculation
with an independent check, and resolve any difference before acceptance.
C. Use the previous calculation unchanged even though one or more current inputs have changed.
D. Proceed using an estimate even though the approved method and current inputs are available.
Correct Answer: B
Explanation: The best answer verifies Signal, indication or image interpretation and separation of relevant from false against current requirements and evidence
before acceptance. With 3 open item(s), 3 supporting record(s), and a 9-unit change from baseline, a traceable foundational decision should resolve the
discrepancy rather than defer, bypass, or redefine the control.
12. A reviewer finds conflicting evidence about Code, specification and acceptance-criteria application without exceeding authorization for safe, accurate work
in during a pre-task planning review. What should happen first? Case EB-2709-0012: 5 checks are complete, 4 item(s) remain open, 7 supporting record(s) are
available, the last review was 10 hour(s) ago, and the current result differs from the prior baseline by 7 unit(s).
A. Report only the final indication and omit the conditions that may have affected the test.
B. Repeat the test until a passing result is obtained and discard the earlier inconsistent results.
C. Accept the result if it matches the expected outcome, even when a control check is invalid.
D. Check calibration and method controls affecting Code, specification and acceptance-criteria application without exceeding authorization for, investigate the
unexpected indication or result, and document a defensible disposition.
Correct Answer: D
Explanation: The best answer verifies Code, specification and acceptance-criteria application without exceeding authorization against current requirements and
evidence before acceptance. With 4 open item(s), 7 supporting record(s), and a 7-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
13. A reviewer finds conflicting evidence about Equipment calibration, reference standards, control checks and traceable records through realistic
nondestructive during a pre-task planning review. What should happen first? Case EB-2709-0013: 3 checks are complete, 1 item(s) remain open, 4 supporting
record(s) are available, the last review was 23 hour(s) ago, and the current result differs from the prior baseline by 5 unit(s).
A. Proceed using an estimate even though the approved method and current inputs are available.
B. Confirm source data and allowable limits for Equipment calibration, reference standards, control checks and traceable records through, repeat the calculation
with an independent check, and resolve any difference before acceptance.
C. Adjust an input until the result falls within the target range, then record only the final value.
D. Average the conflicting results and accept the midpoint without checking the source data.
Correct Answer: B
Explanation: The best answer verifies Equipment calibration, reference standards, control checks and traceable records against current requirements and
evidence before acceptance. With 1 open item(s), 4 supporting record(s), and a 5-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
14. A reviewer finds conflicting evidence about Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as applicable with emphasis on
during a pre-task planning review. What should happen first? Case EB-2709-0014: 10 checks are complete, 2 item(s) remain open, 1 supporting record(s) are
available, the last review was 12 hour(s) ago, and the current result differs from the prior baseline by 3 unit(s).
A. Use the previous calculation unchanged even though one or more current inputs have changed.
B. Confirm source data and allowable limits for Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as, repeat the calculation with an
independent check, and resolve any difference before acceptance.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Adjust an input until the result falls within the target range, then record only the final value.
Correct Answer: B
Explanation: The best answer verifies Safety controls for radiation, chemicals, electricity, pressure or magnetic fields as against current requirements and
evidence before acceptance. With 2 open item(s), 1 supporting record(s), and a 3-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
15. A reviewer finds conflicting evidence about Reporting location, size, orientation, confidence, limitations and examination coverage for defensible
calculations during a pre-task planning review. What should happen first? Case EB-2709-0015: 8 checks are complete, 3 item(s) remain open, 5 supporting
record(s) are available, the last review was 1 hour(s) ago, and the current result differs from the prior baseline by 1 unit(s).
A. Average the conflicting results and accept the midpoint without checking the source data.
B. Select the most favorable result from repeated calculations without investigating the variation.
C. Ignore unit or assumption differences if the final number appears reasonable.
D. Confirm source data and allowable limits for Reporting location, size, orientation, confidence, limitations and examination coverage for, repeat the calculation
with an independent check, and resolve any difference before acceptance.
Correct Answer: D
Explanation: The best answer verifies Reporting location, size, orientation, confidence, limitations and examination coverage against current requirements and
evidence before acceptance. With 3 open item(s), 5 supporting record(s), and a 1-unit change from baseline, a traceable foundational decision should resolve
the discrepancy rather than defer, bypass, or redefine the control.
British Institute of PCN ? Testing Time-of-Flight Diffraction Level 1 Exam
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