Austro Control GmbH Part-66
Basic Knowledge Examination –
Module 14: Propulsion Exam
,Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
Question 1
A technical discussion concentrates on “Redundancy and Fault Tolerance: Dual-channel
architecture, manual reversion modes, fail-safe logic, and built-in test equipment (BITE)”.
Which subject area most directly matches this focus?
A. Turbine Engine Systems
B. Engine Control Systems (EEC / FADEC)
C. Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
D. Engine Indication Systems
Correct Answer: B
Full Explanation: The focus is redundancy and Fault Tolerance: Dual-channel architecture, manual
reversion modes, fail-safe logic, and built-in test equipment (BITE), which is treated as part of Engine
Control Systems (EEC / FADEC). The question concerns this particular emphasis, not simply whether
another subject could have an indirect connection. The other choices address different organizing
subjects.
Question 2
Which concept is most directly associated with this description: Electric starters, air
turbine starters, fuel-air combustion starters, high-energy ignition units, igniter plugs,
and system operation limits/sequencing?
A. Fuel Systems
B. Starting and Ignition Systems
C. Air Systems
D. Lubrication Systems
Correct Answer: B
Full Explanation: The description links Starting and Ignition Systems with Electric starters, air turbine
starters, fuel-air combustion starters, high-energy ignition units, igniter plugs, and system operation
limits/sequencing. That specific association identifies the correct concept. The other choices name
different concepts and do not match the described association.
Question 3
A case review treats “cowl flaps” and “Operating cycles (four-stroke Otto cycle)” as
separate requirements. The first is confirmed; the second has no recorded result. What
conclusion is justified?
A. Neither requirement can be confirmed because one result is still missing.
B. The second requirement has failed because no result was recorded.
C. Both requirements are confirmed because they belong to the same review.
D. Only the first requirement is confirmed; the other still needs evidence.
Correct Answer: D
Full Explanation: Separate requirements need their own supporting results. A confirmed first result
does not establish the second, while a missing result is not itself a failure. The conclusion must preserve
the distinction between confirmed and unknown.
2785 Page 2
,Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
Question 4
A review of “built-in test equipment (BITE)” must use the current, case-specific evidence
on “Electronic Engine Control (EEC): Supervisory and full-authority digital engine control
(FADEC) architectures”. Which choice best follows that requirement?
A. Use an old summary with no link to the conditions of the present case.
B. Use a repeated opinion about the expected result without checking a case-specific observation.
C. Use the identified current observation from this case, after checking its conditions and relevance.
D. Use an unidentified earlier observation from another case because its conclusion is favorable.
Correct Answer: C
Full Explanation: The requirement specifies currency and case relevance. An identified observation
from the present case can be checked against those criteria. The alternatives lack either a reliable
connection to the current case or an observation that can be evaluated.
Question 5
A task concerning “Hybrid Systems: Series and parallel hybrid propulsion configurations,
energy management systems, power distribution, and generator-motor integration”
separates identifying an issue from explaining its cause in “thermal management
architectures for high-voltage systems”. The issue is identified, but the explanation is
untested. What has been established?
A. Identifying the issue proves every proposed explanation of its cause.
B. Identification and explanation are interchangeable, so no further distinction is needed.
C. The issue has been identified; its proposed cause remains to be evaluated.
D. An untested explanation means the identified issue could not have been observed.
Correct Answer: C
Full Explanation: Identification establishes what issue is being considered. A causal explanation is an
additional claim requiring support. Keeping those steps separate prevents the observation of a problem
from being mistaken for proof of a particular cause.
Question 6
A decision about “dual-shaft vs. single-shaft configurations” was explicitly limited to
evidence available before an unresolved inquiry into “Auxiliary Power Units (APUs):
design principles”. The inquiry now yields material new evidence. What is the defensible
response?
A. Reverse the earlier conclusion automatically without considering what the new evidence shows.
B. Remove the original limitation and claim that the earlier decision already included the new result.
C. Ignore the new evidence because the earlier decision had already been written down.
D. Reconsider the decision in light of the new evidence and explain any retained or revised conclusion.
Correct Answer: D
Full Explanation: A material change in the available evidence can alter the support for a decision.
Reassessment may confirm or change the earlier conclusion, depending on what the evidence shows.
Neither automatic retention nor automatic reversal is justified without that evaluation.
2785 Page 3
, Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
Question 7
Which concept is most directly associated with this description: Fuel control units (FCUs),
hydro-mechanical and electronic fuel metering, fuel pumps, filtration, heating,
pressurization, shut-off valves, and distribution manifolds?
A. Lubrication Systems
B. Starting and Ignition Systems
C. Fuel Systems
D. Air Systems
Correct Answer: C
Full Explanation: The description links Fuel Systems with Fuel control units (FCUs), hydro-mechanical
and electronic fuel metering, fuel pumps, filtration, heating, pressurization, shut-off valves, and
distribution manifolds. That specific association identifies the correct concept. The other choices name
different concepts and do not match the described association.
Question 8
A finding involving “fuel metering valves” has two proposed explanations, one
concerning “throttle position” and the other “Input sensors (temperature, pressure,
speed, throttle position)”. The first is ruled out. The case states that these are the only
two possible explanations. What follows?
A. The second explanation remains under the stated exhaustive two-alternative model.
B. Both explanations are ruled out merely because the first one was ruled out.
C. The first explanation becomes more likely because its supporting condition was excluded.
D. The observation supplies no distinction between the two alternatives in the stated model.
Correct Answer: A
Full Explanation: The exercise explicitly makes the two alternatives exhaustive. Ruling out one leaves
the other within that model. This conclusion depends on the supplied exhaustiveness assumption and
should not be extended beyond it.
Question 9
A case involving “Construction Arrangements” defines success as a verified improvement
in “momentum theory”. The planned intervention is completed, but no outcome check is
recorded. What remains to be established?
A. Failure is established, because an unrecorded outcome is necessarily an unfavorable outcome.
B. The success criterion should be replaced after completion so that no outcome check is needed.
C. Nothing remains, because completion of an intervention always proves its intended outcome.
D. Whether the stated outcome improved; completing the intervention alone does not establish
success.
Correct Answer: D
Full Explanation: The success criterion is an outcome, not merely completion of an action. A
completed intervention may or may not achieve that outcome. Checking the result is therefore
necessary to establish success under the exercise's stated definition.
2785 Page 4
Basic Knowledge Examination –
Module 14: Propulsion Exam
,Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
Question 1
A technical discussion concentrates on “Redundancy and Fault Tolerance: Dual-channel
architecture, manual reversion modes, fail-safe logic, and built-in test equipment (BITE)”.
Which subject area most directly matches this focus?
A. Turbine Engine Systems
B. Engine Control Systems (EEC / FADEC)
C. Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
D. Engine Indication Systems
Correct Answer: B
Full Explanation: The focus is redundancy and Fault Tolerance: Dual-channel architecture, manual
reversion modes, fail-safe logic, and built-in test equipment (BITE), which is treated as part of Engine
Control Systems (EEC / FADEC). The question concerns this particular emphasis, not simply whether
another subject could have an indirect connection. The other choices address different organizing
subjects.
Question 2
Which concept is most directly associated with this description: Electric starters, air
turbine starters, fuel-air combustion starters, high-energy ignition units, igniter plugs,
and system operation limits/sequencing?
A. Fuel Systems
B. Starting and Ignition Systems
C. Air Systems
D. Lubrication Systems
Correct Answer: B
Full Explanation: The description links Starting and Ignition Systems with Electric starters, air turbine
starters, fuel-air combustion starters, high-energy ignition units, igniter plugs, and system operation
limits/sequencing. That specific association identifies the correct concept. The other choices name
different concepts and do not match the described association.
Question 3
A case review treats “cowl flaps” and “Operating cycles (four-stroke Otto cycle)” as
separate requirements. The first is confirmed; the second has no recorded result. What
conclusion is justified?
A. Neither requirement can be confirmed because one result is still missing.
B. The second requirement has failed because no result was recorded.
C. Both requirements are confirmed because they belong to the same review.
D. Only the first requirement is confirmed; the other still needs evidence.
Correct Answer: D
Full Explanation: Separate requirements need their own supporting results. A confirmed first result
does not establish the second, while a missing result is not itself a failure. The conclusion must preserve
the distinction between confirmed and unknown.
2785 Page 2
,Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
Question 4
A review of “built-in test equipment (BITE)” must use the current, case-specific evidence
on “Electronic Engine Control (EEC): Supervisory and full-authority digital engine control
(FADEC) architectures”. Which choice best follows that requirement?
A. Use an old summary with no link to the conditions of the present case.
B. Use a repeated opinion about the expected result without checking a case-specific observation.
C. Use the identified current observation from this case, after checking its conditions and relevance.
D. Use an unidentified earlier observation from another case because its conclusion is favorable.
Correct Answer: C
Full Explanation: The requirement specifies currency and case relevance. An identified observation
from the present case can be checked against those criteria. The alternatives lack either a reliable
connection to the current case or an observation that can be evaluated.
Question 5
A task concerning “Hybrid Systems: Series and parallel hybrid propulsion configurations,
energy management systems, power distribution, and generator-motor integration”
separates identifying an issue from explaining its cause in “thermal management
architectures for high-voltage systems”. The issue is identified, but the explanation is
untested. What has been established?
A. Identifying the issue proves every proposed explanation of its cause.
B. Identification and explanation are interchangeable, so no further distinction is needed.
C. The issue has been identified; its proposed cause remains to be evaluated.
D. An untested explanation means the identified issue could not have been observed.
Correct Answer: C
Full Explanation: Identification establishes what issue is being considered. A causal explanation is an
additional claim requiring support. Keeping those steps separate prevents the observation of a problem
from being mistaken for proof of a particular cause.
Question 6
A decision about “dual-shaft vs. single-shaft configurations” was explicitly limited to
evidence available before an unresolved inquiry into “Auxiliary Power Units (APUs):
design principles”. The inquiry now yields material new evidence. What is the defensible
response?
A. Reverse the earlier conclusion automatically without considering what the new evidence shows.
B. Remove the original limitation and claim that the earlier decision already included the new result.
C. Ignore the new evidence because the earlier decision had already been written down.
D. Reconsider the decision in light of the new evidence and explain any retained or revised conclusion.
Correct Answer: D
Full Explanation: A material change in the available evidence can alter the support for a decision.
Reassessment may confirm or change the earlier conclusion, depending on what the evidence shows.
Neither automatic retention nor automatic reversal is justified without that evaluation.
2785 Page 3
, Austro Control GmbH Part-66 Basic Knowledge Examination – Module 14: Propulsion Exam
Question 7
Which concept is most directly associated with this description: Fuel control units (FCUs),
hydro-mechanical and electronic fuel metering, fuel pumps, filtration, heating,
pressurization, shut-off valves, and distribution manifolds?
A. Lubrication Systems
B. Starting and Ignition Systems
C. Fuel Systems
D. Air Systems
Correct Answer: C
Full Explanation: The description links Fuel Systems with Fuel control units (FCUs), hydro-mechanical
and electronic fuel metering, fuel pumps, filtration, heating, pressurization, shut-off valves, and
distribution manifolds. That specific association identifies the correct concept. The other choices name
different concepts and do not match the described association.
Question 8
A finding involving “fuel metering valves” has two proposed explanations, one
concerning “throttle position” and the other “Input sensors (temperature, pressure,
speed, throttle position)”. The first is ruled out. The case states that these are the only
two possible explanations. What follows?
A. The second explanation remains under the stated exhaustive two-alternative model.
B. Both explanations are ruled out merely because the first one was ruled out.
C. The first explanation becomes more likely because its supporting condition was excluded.
D. The observation supplies no distinction between the two alternatives in the stated model.
Correct Answer: A
Full Explanation: The exercise explicitly makes the two alternatives exhaustive. Ruling out one leaves
the other within that model. This conclusion depends on the supplied exhaustiveness assumption and
should not be extended beyond it.
Question 9
A case involving “Construction Arrangements” defines success as a verified improvement
in “momentum theory”. The planned intervention is completed, but no outcome check is
recorded. What remains to be established?
A. Failure is established, because an unrecorded outcome is necessarily an unfavorable outcome.
B. The success criterion should be replaced after completion so that no outcome check is needed.
C. Nothing remains, because completion of an intervention always proves its intended outcome.
D. Whether the stated outcome improved; completing the intervention alone does not establish
success.
Correct Answer: D
Full Explanation: The success criterion is an outcome, not merely completion of an action. A
completed intervention may or may not achieve that outcome. Checking the result is therefore
necessary to establish success under the exercise's stated definition.
2785 Page 4
