AAC Preventive Maintenance Checks Questions and Answers — Questions and Answers
Question 1: In Army Aviation, preventive maintenance checks are broadly categorized based on who performs them and their level of detail. What are the two primary categories of these checks?
- Scheduled and Unscheduled
- Aircrew and Maintenance Personnel Checks (Correct answer)
- Component and Airframe Checks
- Pre-mission and Post-mission
Correct answer: Aircrew and Maintenance Personnel Checks
Army Aviation maintenance doctrine divides Preventive Maintenance Checks (PMCs) into two main groups: those performed by the aircrew (pre-flight, thru-flight, post-flight) and more in-depth, technical checks performed by qualified maintenance personnel (e.g., Preventive Maintenance Daily and Phased Maintenance Inspections).
Question 2: A crew chief has just completed and signed off the Preventive Maintenance Daily (PMD) on a UH-60M. Before the first flight of the day, what is the pilot's specific responsibility regarding the aircraft's condition?
- To assume the PMD is sufficient and begin the mission immediately.
- To supervise the crew chief during the next PMD.
- To perform a separate and distinct pre-flight inspection per the operator's manual. (Correct answer)
- To review and countersign the PMD log entry in the aircraft's records.
Correct answer: To perform a separate and distinct pre-flight inspection per the operator's manual.
Even after maintenance personnel complete a PMD, the pilot-in-command is always required to conduct a thorough pre-flight inspection as outlined in the aircraft's technical manual. This is a final, independent verification by the operator to ensure the aircraft is safe for the intended flight.
Question 3: Which of the following is a key objective of the Preventive Maintenance Daily (PMD) inspection?
- To serve as the only required inspection for a 24-hour period.
- To verify the airworthiness of the aircraft and identify faults before the first flight of the day. (Correct answer)
- To replace all life-limited components that are near their expiration date.
- To perform major structural repairs and modifications to the airframe.
Correct answer: To verify the airworthiness of the aircraft and identify faults before the first flight of the day.
The PMD is a systematic inspection performed by maintenance personnel to ensure the aircraft is mission-capable and airworthy. Its primary goal is to detect and correct any faults before the day's flight operations begin, establishing a baseline of readiness.
Question 4: A CH-47F is due for its 400-hour Phased Maintenance Inspection (PMI). The maintenance platoon sergeant is briefing the team. What is the defining characteristic of a PMI that they should emphasize?
- It is an unscheduled inspection driven by a specific component failure.
- It is a quick visual check performed exclusively by the aircrew between missions.
- It replaces the need for daily inspections for the next 30 days.
- It is a comprehensive inspection divided into sequential segments to minimize aircraft downtime. (Correct answer)
Correct answer: It is a comprehensive inspection divided into sequential segments to minimize aircraft downtime.
A Phased Maintenance Inspection (PMI) is a thorough, in-depth inspection that is broken down into numbered phases or packages. This approach allows significant maintenance to be performed in manageable segments, reducing the total time the aircraft is non-mission capable compared to one single, massive inspection event.
Question 5: According to Army maintenance doctrine, who holds the ultimate responsibility for ensuring the unit's Preventive Maintenance Checks and Services (PMCS) program is properly established and executed?
- The individual Crew Chief
- The Battalion Maintenance Officer
- The Unit Commander (Correct answer)
- The Pilot-in-Command
Correct answer: The Unit Commander
While pilots, maintenance officers, and crew chiefs all have critical roles, the unit commander is ultimately responsible for all aspects of the unit's operations, including the proper execution, training, and enforcement of the maintenance and PMCS program to ensure readiness.
Question 6: Which statement accurately describes the relationship between a Post-Flight Inspection and the next day's maintenance activities?
- Faults identified during the Post-Flight Inspection become a starting point for the maintenance team's corrective actions. (Correct answer)
- The Post-Flight Inspection is only required if the aircraft exceeded its operational limits during the flight.
- A thorough Post-Flight Inspection by the aircrew eliminates the need for the next day's PMD.
- The Post-Flight Inspection is performed by maintenance personnel to prepare for immediate turnaround.
Correct answer: Faults identified during the Post-Flight Inspection become a starting point for the maintenance team's corrective actions.
The Post-Flight Inspection, conducted by the aircrew after the last flight, is crucial for identifying discrepancies that occurred during the mission. These documented faults are then used by the maintenance team to schedule and perform necessary repairs, often before or during the next day's PMD.
AAC Preventive Maintenance Checks Questions and Answers
In Army Aviation, preventive maintenance checks are broadly categorized based on who performs them and their level of detail.
What are the two primary categories of these checks?