AM Aircraft Maintenance Safety & Regulatory Compliance 2 — Questions and Answers
Question 1: Under 14 CFR Part 43, who is authorized to approve an aircraft for return to service after a 100-hour inspection?
- Any certificated pilot
- A certificated mechanic holding an Airframe and Powerplant rating (Correct answer)
- An FAA safety inspector only
- The aircraft owner
Correct answer: A certificated mechanic holding an Airframe and Powerplant rating
14 CFR Part 43.7 authorizes a certificated A&P mechanic to approve an aircraft for return to service after a 100-hour inspection.
Question 2: When using a torque wrench, in which direction should you apply force relative to the wrench handle to get an accurate reading?
- At 90 degrees to the handle
- In-line with the handle from the pivot point (Correct answer)
- At 45 degrees to the handle
- Direction does not affect accuracy
Correct answer: In-line with the handle from the pivot point
Torque wrenches are calibrated for force applied in-line with the handle at the grip point; off-axis force produces inaccurate readings.
Question 3: Which document must be issued before a major repair or major alteration can be performed on a certificated aircraft?
- FAA Form 337
- A Supplemental Type Certificate (Correct answer)
- A Field Approval Letter
- An Airworthiness Directive
Correct answer: A Supplemental Type Certificate
A Supplemental Type Certificate (STC) approves the design data for a major alteration; FAA Form 337 records the completed work.
Question 4: What action is required when a mechanic discovers a defect that could endanger the aircraft but is outside the scope of their work order?
- Ignore it and complete only the assigned task
- Repair it immediately without notifying anyone
- Notify the aircraft owner or operator of the unsafe condition (Correct answer)
- Ground the aircraft and call the FAA
Correct answer: Notify the aircraft owner or operator of the unsafe condition
14 CFR 43.13 requires the mechanic to notify the owner or operator of any unsafe condition found during maintenance.
Question 5: Lockwire installed on left-hand threaded fasteners should wrap in which direction so that tightening tension is maintained?
- Clockwise when viewed from the bolt head
- Counter-clockwise when viewed from the bolt head (Correct answer)
- Either direction is acceptable
- No lockwire is needed on left-hand threads
Correct answer: Counter-clockwise when viewed from the bolt head
On left-hand threaded fasteners the lockwire must pull counter-clockwise (when viewed from the head) to resist loosening.
Question 6: A mechanic discovers an Airworthiness Directive (AD) applies to a component they are about to install. What is the correct course of action?
- Install the component and note the AD in the logbook
- Comply with the AD before installing, or install an AD-compliant part (Correct answer)
- Contact the manufacturer for a waiver
- Defer compliance until the next scheduled inspection
Correct answer: Comply with the AD before installing, or install an AD-compliant part
AD compliance is mandatory; the mechanic must comply with the AD requirements before installing the affected component.
Question 7: Which OSHA standard primarily governs hazard communication (HazCom) and Safety Data Sheets in an aircraft maintenance shop?
- 29 CFR 1910.119
- 29 CFR 1910.1200 (Correct answer)
- 14 CFR 65.81
- 49 CFR 172.101
Correct answer: 29 CFR 1910.1200
29 CFR 1910.1200 is OSHA's Hazard Communication Standard, requiring SDS availability and employee training on chemical hazards.
AM Aircraft Maintenance Safety & Regulatory Compliance 2
Under 14 CFR Part 43, who is authorized to approve an aircraft for return to service after a 100-hour inspection?