Maintenance quiz – Spring 2024

For each item, chose the most appropriate response.

1. On a non-computer-controlled turbofan engine such as a P&W JT15 series, if the pilot leaves the power lever set to climb power, the following will happen:
   1. the fan speed will increase with altitude
   2. the fan speed will decrease with altitude
   3. the fuel flow will decrease with altitude
   4. the fuel flow will remain the same with altitude
2. A large turbofan engine such as a CFM International CFM56 produces most of its power from the fan when:
   1. at cruising altitude
   2. at sea level
   3. at all altitudes
   4. the core engine is producing more thrust
3. On a large modern turbofan engine fitted to an airliner, reverse thrust is mainly achieved by:
   1. reversing the core engine on landing
   2. reversing both the core engine and the bypass flow
   3. reversing the bypass flow only
   4. reversing the core first then the bypass in sequence
4. The reason the Boeing 787 has scalloped cowling trailing edges is:
   1. a marketing tool designed to make the aircraft unique
   2. to stop crack propagation in the aft nacelle
   3. to reduce noise when the engine is in reverse thrust
   4. to reduce ambient noise where the hot exhaust and cool bypass air mix at high velocity
5. In a free-turbine turboprop engine:
   1. the gas producer section of the engine is not connected physically to the power section of the engine
   2. the gas producer section of the engine is connected physically to the power section
   3. on start-up, the propeller begins to turn as a result of turbine combustion gases passing through the gas producer turbine
   4. on start-up, the power turbine turns the gas producer turbine as the gas producer is downstream from the power turbine
6. In a free-turbine, turboprop engine such as a P&W PT6 at cruise altitude with torque set to a constant, a dirty compressor may cause:
   1. an increase in ITT
   2. a decrease in ITT
   3. an increase in both ITT and FF
   4. a decrease in FF and an increase in Ng
7. On Airbus A350 aircraft, there is a characteristic black band around the periphery of the pilot’s windshield. The purpose of the black band is:
   1. purely aesthetic
   2. because the designers wanted to set the Boeing 787 and the Airbus A350 apart as they are similar-looking aircraft
   3. to contribute to easier maintenance of the windshield
   4. to boost efficiency and safety of the aircraft by providing a medium to rapidly adjust temperatures of surrounding skin
8. Some helicopters have a rotor brake which:
   1. is mandated for engine starting
   2. locks the power section of a turbine engine so the rotor system does not rotate, while allowing the engine to be started
   3. is used at the pilot’s discretion only when embarking and disembarking passengers
   4. allows the rotary components extra time between overhauls
9. Turbine blade creep is usually caused by:
   1. rotational speed above design limits
   2. thermal shock exceeding design limits
   3. rotational speed and temperature exceeding design limits
   4. turbine blade material below specification
10. A turbofan engine on a modern airliner that suffers a bird strike may make a popping sound. The sound is caused by:
    1. the engine breaking up internally
    2. the airflow through the bypass duct being disrupted
    3. the compressor section stalling because of damage to that part of the engine
    4. the flame front progression to the tail pipe
11. A light jet such as a Learjet 35 series lands on a wet runway. After landing, engineers find a ‘flat spot’ on the tyre. This is most probably caused by:
    1. excessive braking leading to a wheel lock-up
    2. an unserviceable ‘anti-skid’ system
    3. a tyre skidding on the wet surface causing steam to be produced and burning the tyre
    4. none of the above
12. The proposed Part 43 regulations for maintenance of aircraft used in private and aerial work operations are relevant to:
    1. registered operators
    2. aircraft owners
    3. maintainers of aircraft
    4. all of the above
13. The proposed Part 43 maintenance regulations can be used for private operations of:
    1. sport and recreational aircraft – Part 103 of CASR
    2. balloons and hot air airships – Part 131 of CASR
    3. large drones – Part 101 of CASR
    4. VH-registered aircraft
14. Under the proposed Part 43 regulations, the person who can perform an annual inspection is:
    1. an A1 LAME working in a Part 145 maintenance organisation
    2. a B1 LAME with an inspection authorisation (IA)
    3. a B2 LAME with an inspection authorisation (IA)
    4. an AMTC (aircraft maintenance technician certificate) holder

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