The Elite Universal
Test Bank: FAA
Repairman Certificate
– Light-Sport
Aircraft (LSA)
Inspection &
Maintenance Mastery
PART 0: Table of Contents
● PART I: The Preview
○ The Intro
○ The "Critical Axioms" Cheat Sheet
● PART II: The Elite Test Bank
○ Tier 1: Foundational Syntax & Application (Questions 1–10)
○ Tier 2: Complex Application & Simulation (Questions 11–20)
○ Tier 3: Grandmaster Synthesis (Questions 21–30)
PART I: The Preview
Mastering this test bank translates directly to elite operational safety and diagnostic superiority,
forging the technician into a master diagnostician capable of navigating the complex intersection
of 14 CFR Part 65 regulations, the revolutionary MOSAIC directives, and advanced powerplant
mechanics. The assessments below replace rote memorization with a deep, simplified
understanding of highly complex aerospace tolerances and legal frameworks.
The "Critical Axioms" Cheat Sheet
● The LSRI vs. LSRM Delineation: The 14 CFR 65.107 framework strictly isolates
inspection privileges from maintenance execution.
,Certificate Rating Training Requirement Privileges Limitations
Inspection (LSRI) 16-Hour Course Annual condition No maintenance, no
inspection on owned repairs, no S-LSA
E-LSA or EAB. inspections, no
commercial work.
Maintenance (LSRM) 120-Hour Course Maintenance, 100-hour, Excludes major repairs
and annual inspections and major alterations
on S-LSA and E-LSA. on FAA-approved
products without
supplementary training.
● The MOSAIC Paradigm Shift (Phase 1 & 2): The Modernization of Special Airworthiness
Certification removes the legacy 1,320-pound weight limit, replacing it with dynamic
aerodynamic performance limits based on stall speeds.
Metric Legacy LSA Rule New MOSAIC Rule
(2025/2026)
Max Weight 1,320 lbs (1,430 seaplanes) Eliminated (No weight limit).
Max Seats 2 Seats 4 Seats (for airplane
certification).
Aircraft Certification (Stall) 45 KCAS VS0 up to 61 KCAS.
Pilot Operating Limit (Stall) 45 KCAS VS1 up to 59 KCAS.
Max Airspeed 120 KCAS 250 KCAS (VH).
● The Rotax 912 Differential Anomaly: Powerplant diagnostics require adherence to the
manufacturer's specific baseline metrics. Unlike traditional Lycoming or Continental
engines tested at 80 PSI, Rotax 912 differential compression checks mandate an 87 PSI
(6 bar) reference pressure using a 0.040-inch orifice, with a maximum permissible loss of
25% (65 PSI).
● The Slipper Clutch Preload Formula: Friction torque on a Rotax gearbox is calculated
mathematically. The formula is Force (Newtons) x Lever Arm Length (meters). A standard
pull at 0.5m requiring 8 kg of force equates to 40 Nm (8 kg x 10 = 80 N; 80 N x 0.5m = 40
Nm). The minimum acceptable limit is 30 Nm, though 40 Nm is recommended.
● The AC 43.13-1B Mandate: This advisory circular is acceptable data for nonpressurized
aircraft only when manufacturer repair instructions do not exist. It serves as a basis for
major repairs but does not supersede specific manufacturer data.
PART II: The Elite Test Bank
Tier 1: Foundational Syntax & Application
Q1: An individual successfully completes a 16-hour FAA-accepted training course for the
airplane class of light-sport aircraft. Based on the principles of 14 CFR 65.107, which action is
the MOST ACCURATE regarding the privileges of the resulting certificate? A) The individual
may perform maintenance and annual condition inspections on any Special Light-Sport Aircraft
(S-LSA) within the airplane class. B) The individual may approve for return to service an
Experimental Light-Sport Aircraft (E-LSA) after performing a major repair, provided they own the
aircraft. C) The individual may perform the annual condition inspection on an Experimental
Light-Sport Aircraft (E-LSA) that is owned by the holder. D) The individual may perform 100-hour
, inspections on an E-LSA used for flight instruction, provided they supervised the original build.
● Answer: C (The individual may perform the annual condition inspection on an
Experimental Light-Sport Aircraft (E-LSA) that is owned by the holder.)
● Distractor Analysis:
○ A is incorrect: Performing maintenance and annuals on an S-LSA requires a
Repairman Certificate with a Maintenance rating (LSRM), which mandates a
120-hour course, not a 16-hour course.
○ B is incorrect: The Inspection rating (LSRI) explicitly limits the holder to performing
the annual condition inspection. It does not grant maintenance or alteration
privileges, let alone major repairs.
○ D is incorrect: A 100-hour inspection for aircraft used for hire requires an LSRM
rating or a standard A&P mechanic. The 16-hour course only grants an Inspection
rating.
The Mentor's Analysis: The 14 CFR 65.107 framework clearly divides light-sport repairmen
into two distinct tiers: Inspection (LSRI) and Maintenance (LSRM). The 16-hour LSRI course is
purely an owner-operator privilege restricted to condition inspections on non-commercial
experimental aircraft. By utilizing the Inspection Rating Limitation, the technician bypasses the
common trap of assuming inspection privileges equate to maintenance authorization.
Professional/Academic Intuition: Never conflate the ability to inspect with the authority to
repair; the LSRI is a diagnostic privilege, not a mechanical intervention license.
Q2: During a routine compression check on a Rotax 912 ULS engine, a technician prepares the
differential cylinder pressure tester. Based on the principles of Rotax Maintenance Standards,
which initial calibration setting is the MOST ACCURATE? A) Set the reference pressure to 80
PSI using a 0.060-inch master orifice. B) Set the reference pressure to 87 PSI using a
0.040-inch master orifice. C) Set the reference pressure to 60 PSI to ensure the engine does
not rotate past top dead center. D) Set the reference pressure to 80 PSI using a 0.040-inch
master orifice.
● Answer: B (Set the reference pressure to 87 PSI using a 0.040-inch master orifice.)
● Distractor Analysis:
○ A is incorrect: The 0.060-inch orifice is utilized for large-displacement engines with
a cylinder bore larger than 5 inches. The Rotax 912 requires a 0.040-inch orifice.
○ C is incorrect: 60 PSI is an arbitrary number below the diagnostic threshold. While
propeller safety is critical, reference pressure must be set correctly to accurately
measure percentage loss.
○ D is incorrect: This represents a common novice trap. While 80 PSI is the universal
standard for American heritage engines per AC 43.13-1B, Rotax explicitly
mandates 6 bar (87 PSI).
The Mentor's Analysis: Powerplant diagnostics require strict adherence to the manufacturer's
specific baseline metrics. While traditional general aviation relies on the 80 PSI standard,
Rotax's European engineering utilizes 6 bar (87 PSI) for accurate differential pressure
fault-tracing. Professional/Academic Intuition: Legacy knowledge is a liability when
applied to modern, non-traditional powerplants; always index test equipment to the
specific manufacturer's baseline.
Q3: The FAA recently finalized the MOSAIC (Modernization of Special Airworthiness
Certification) rule. Based on the principles of the MOSAIC Phase 2 implementation, which
parameter IMMEDIATELY replaces the legacy 1,320-pound weight limit for light-sport category
aircraft? A) A maximum takeoff weight limit of 3,000 pounds. B) A maximum landing
configuration stall speed (VS0) limitation for aircraft certification. C) A mandatory ballistic
Test Bank: FAA
Repairman Certificate
– Light-Sport
Aircraft (LSA)
Inspection &
Maintenance Mastery
PART 0: Table of Contents
● PART I: The Preview
○ The Intro
○ The "Critical Axioms" Cheat Sheet
● PART II: The Elite Test Bank
○ Tier 1: Foundational Syntax & Application (Questions 1–10)
○ Tier 2: Complex Application & Simulation (Questions 11–20)
○ Tier 3: Grandmaster Synthesis (Questions 21–30)
PART I: The Preview
Mastering this test bank translates directly to elite operational safety and diagnostic superiority,
forging the technician into a master diagnostician capable of navigating the complex intersection
of 14 CFR Part 65 regulations, the revolutionary MOSAIC directives, and advanced powerplant
mechanics. The assessments below replace rote memorization with a deep, simplified
understanding of highly complex aerospace tolerances and legal frameworks.
The "Critical Axioms" Cheat Sheet
● The LSRI vs. LSRM Delineation: The 14 CFR 65.107 framework strictly isolates
inspection privileges from maintenance execution.
,Certificate Rating Training Requirement Privileges Limitations
Inspection (LSRI) 16-Hour Course Annual condition No maintenance, no
inspection on owned repairs, no S-LSA
E-LSA or EAB. inspections, no
commercial work.
Maintenance (LSRM) 120-Hour Course Maintenance, 100-hour, Excludes major repairs
and annual inspections and major alterations
on S-LSA and E-LSA. on FAA-approved
products without
supplementary training.
● The MOSAIC Paradigm Shift (Phase 1 & 2): The Modernization of Special Airworthiness
Certification removes the legacy 1,320-pound weight limit, replacing it with dynamic
aerodynamic performance limits based on stall speeds.
Metric Legacy LSA Rule New MOSAIC Rule
(2025/2026)
Max Weight 1,320 lbs (1,430 seaplanes) Eliminated (No weight limit).
Max Seats 2 Seats 4 Seats (for airplane
certification).
Aircraft Certification (Stall) 45 KCAS VS0 up to 61 KCAS.
Pilot Operating Limit (Stall) 45 KCAS VS1 up to 59 KCAS.
Max Airspeed 120 KCAS 250 KCAS (VH).
● The Rotax 912 Differential Anomaly: Powerplant diagnostics require adherence to the
manufacturer's specific baseline metrics. Unlike traditional Lycoming or Continental
engines tested at 80 PSI, Rotax 912 differential compression checks mandate an 87 PSI
(6 bar) reference pressure using a 0.040-inch orifice, with a maximum permissible loss of
25% (65 PSI).
● The Slipper Clutch Preload Formula: Friction torque on a Rotax gearbox is calculated
mathematically. The formula is Force (Newtons) x Lever Arm Length (meters). A standard
pull at 0.5m requiring 8 kg of force equates to 40 Nm (8 kg x 10 = 80 N; 80 N x 0.5m = 40
Nm). The minimum acceptable limit is 30 Nm, though 40 Nm is recommended.
● The AC 43.13-1B Mandate: This advisory circular is acceptable data for nonpressurized
aircraft only when manufacturer repair instructions do not exist. It serves as a basis for
major repairs but does not supersede specific manufacturer data.
PART II: The Elite Test Bank
Tier 1: Foundational Syntax & Application
Q1: An individual successfully completes a 16-hour FAA-accepted training course for the
airplane class of light-sport aircraft. Based on the principles of 14 CFR 65.107, which action is
the MOST ACCURATE regarding the privileges of the resulting certificate? A) The individual
may perform maintenance and annual condition inspections on any Special Light-Sport Aircraft
(S-LSA) within the airplane class. B) The individual may approve for return to service an
Experimental Light-Sport Aircraft (E-LSA) after performing a major repair, provided they own the
aircraft. C) The individual may perform the annual condition inspection on an Experimental
Light-Sport Aircraft (E-LSA) that is owned by the holder. D) The individual may perform 100-hour
, inspections on an E-LSA used for flight instruction, provided they supervised the original build.
● Answer: C (The individual may perform the annual condition inspection on an
Experimental Light-Sport Aircraft (E-LSA) that is owned by the holder.)
● Distractor Analysis:
○ A is incorrect: Performing maintenance and annuals on an S-LSA requires a
Repairman Certificate with a Maintenance rating (LSRM), which mandates a
120-hour course, not a 16-hour course.
○ B is incorrect: The Inspection rating (LSRI) explicitly limits the holder to performing
the annual condition inspection. It does not grant maintenance or alteration
privileges, let alone major repairs.
○ D is incorrect: A 100-hour inspection for aircraft used for hire requires an LSRM
rating or a standard A&P mechanic. The 16-hour course only grants an Inspection
rating.
The Mentor's Analysis: The 14 CFR 65.107 framework clearly divides light-sport repairmen
into two distinct tiers: Inspection (LSRI) and Maintenance (LSRM). The 16-hour LSRI course is
purely an owner-operator privilege restricted to condition inspections on non-commercial
experimental aircraft. By utilizing the Inspection Rating Limitation, the technician bypasses the
common trap of assuming inspection privileges equate to maintenance authorization.
Professional/Academic Intuition: Never conflate the ability to inspect with the authority to
repair; the LSRI is a diagnostic privilege, not a mechanical intervention license.
Q2: During a routine compression check on a Rotax 912 ULS engine, a technician prepares the
differential cylinder pressure tester. Based on the principles of Rotax Maintenance Standards,
which initial calibration setting is the MOST ACCURATE? A) Set the reference pressure to 80
PSI using a 0.060-inch master orifice. B) Set the reference pressure to 87 PSI using a
0.040-inch master orifice. C) Set the reference pressure to 60 PSI to ensure the engine does
not rotate past top dead center. D) Set the reference pressure to 80 PSI using a 0.040-inch
master orifice.
● Answer: B (Set the reference pressure to 87 PSI using a 0.040-inch master orifice.)
● Distractor Analysis:
○ A is incorrect: The 0.060-inch orifice is utilized for large-displacement engines with
a cylinder bore larger than 5 inches. The Rotax 912 requires a 0.040-inch orifice.
○ C is incorrect: 60 PSI is an arbitrary number below the diagnostic threshold. While
propeller safety is critical, reference pressure must be set correctly to accurately
measure percentage loss.
○ D is incorrect: This represents a common novice trap. While 80 PSI is the universal
standard for American heritage engines per AC 43.13-1B, Rotax explicitly
mandates 6 bar (87 PSI).
The Mentor's Analysis: Powerplant diagnostics require strict adherence to the manufacturer's
specific baseline metrics. While traditional general aviation relies on the 80 PSI standard,
Rotax's European engineering utilizes 6 bar (87 PSI) for accurate differential pressure
fault-tracing. Professional/Academic Intuition: Legacy knowledge is a liability when
applied to modern, non-traditional powerplants; always index test equipment to the
specific manufacturer's baseline.
Q3: The FAA recently finalized the MOSAIC (Modernization of Special Airworthiness
Certification) rule. Based on the principles of the MOSAIC Phase 2 implementation, which
parameter IMMEDIATELY replaces the legacy 1,320-pound weight limit for light-sport category
aircraft? A) A maximum takeoff weight limit of 3,000 pounds. B) A maximum landing
configuration stall speed (VS0) limitation for aircraft certification. C) A mandatory ballistic
