Aircraft Maintenance Multiple Choice Questions on “Overview of an Aircraft-1”.
1. What is the full form of MRO?
a) Maintenance, repair and overhaul
b) Maintenance, repair and organization
c) Maintain, repair and overhaul
d) Maintain, repair and organization
Answer: a
Clarification: Aircraft maintenance, repair and overhaul (MRO) is an essential requirement to ensure that aircrafts are maintained in pre-determined conditions of airworthiness in order to safely fly around the globe.
2. Which of the following is the most extensive check to be performed on an aircraft?
a) Category A-Check
b) Category B-Check
c) Category D-Check
d) Category C-Check
Answer: c
Clarification: Category-D check is the most extensive check to be performed on an aircraft, it may also be referred to as Heavy Maintenance Visit. Such checks are performed every 5 to 6 years and require a tremendous amount of manpower.
3. Flight Data Recorder is also known as __________
a) Orange Box
b) Black Box
c) Red Box
d) Green Box
Answer: b
Clarification: Flight data recorder or commercial aircraft cockpit data recorders are also commonly referred as a black box. These recorders store flight information and audio from the aircraft cockpit.
4. Aircraft equipment’s operate at _________
a) 350Hz
b) 450Hz
c) 400Hz
d) 40Hz
Answer: c
Clarification: Aircraft equipment’s operate at 400Hz. The equipment operates at high frequency in order to reduce their core size, thus being lighter and more efficient.
5. Which of the following is the most frequently conducted check on an aircraft?
a) Category C-Check
b) Category A-Check
c) Category B-Check
d) Category D-Check
Answer: b
Clarification: Category A-check is performed approximately every 500 – 800 flight hours. The check needs about 20 man hours and is usually performed overnight at an airport gate. All other category checks are more extensive.
6. Which of the following indicates an aircraft’s rotation about its longitudinal axis?
a) Turn Indicator
b) Pitch Indicator
c) Yaw Indicator
d) Bank indicator
Answer: a
Clarification: The turn indicator indicates an aircraft’s rotation about its longitudinal axis. The instrument includes Turn-and-Slip Indicator and the Turn Coordinator.
7. What is the frequency range of VHF?
a) 30 MHz to 300 MHz
b) 30 Hz to 300 Hz
c) 30 KHz to 300 KHz
d) 30 mHz to 300 mHz
Answer: a
Clarification: Very high frequency (VHF) is the radio frequency range from 30 MHz to 300 MHz. Frequencies immediately below VHF are denoted high frequency and the next higher frequencies are known as ultra-high frequency.
8. Which of the following bodies regulates civil aviation in India?
a) DGCA
b) EASA
c) FAA
d) CASA
Answer: a
Clarification: DGCA is the flight regulation authority in India. FAA, EASA and CASA are the flight regulation authorities in the USA, Europe and Australia respectively.
9. Radio altimeters are used only up to _________
a) 2500 feet
b) 3000 feet
c) 250 feet
d) 300 feet
Answer: a
Clarification: Radio altimeters are capable of determining the flight altitude only up to 2,500 feet above ground level. These devices send data to the auto throttle, which in turn processes by means of flight computers.
10. The Airbus A380 is equipped with three engines.
a) False
b) True
Answer: b
Clarification: False, the Airbus A380 is equipped with four engines. It is a wide body, double decker aircraft that is mainly operated on long haul routes.
11. Which of the following is not a part of the “big five” instruments?
a) Altimeter
b) Airspeed indicator
c) Head up display
d) Artificial Horizon
Answer: c
Clarification: The head up display is not a part of the “big five” instruments. The five instruments in the “big five” are Altimeter, Airspeed indicator, vertical speed indicator, artificial horizon and heading indicator.
12. Which of the following is a part of the tail assembly of an aircraft?
a) Spoilers
b) Edge flaps
c) Slats
d) Stabilizer
Answer: d
Clarification: The stabilizer are a part of the tail assembly of an aircraft. Spoilers, edge flaps and slats are located on the wing of an aircraft.
13. Radar systems use which of the following waves?
a) Ultrasonic
b) Radio
c) Nuclear
d) Electronic
Answer: b
Clarification: The radar systems use radio waves. These are systems designed to determine parameters like the range, angle, or velocity of different objects.