Aircraft Maintenance Theory N3 — Document
December 2023 — N3 — Aircraft Maintenance Theory
N3
2023
Nated Engineering
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Q1— Section header —
1.10\in the ANSWER BOOK.
1.1Inspections are necessary in the aircraft industry ... to issue an airworthiness certificate as laid down by the authorities and to ensure the safety of the pas sen gers and crew
1.2During the course of routine maintenance in order to reduce the occurrence of corrosion on ircraft ...
1.3To place the aircraft in rigging position the aircraft must be jacked up and the procedure to be followed includes ...
1.4The effects of overloading an aircraft i an increased difficulty in raising the nose of the aircraft. an increased tendency to dive, especially with power off. a lower angle and rate of climb.
1.5he correct arrangement of the pitot static system is ...
1.6Fuses or circuit breakers are installed in the electrical system to ... use a device in one electrical circui t t hat can activate a current or a voltage to produce a change in the electrical condition of another electrical circuit
1.7split wheel and removable flange types. drop centre fixed flange and simple fixed
1.8Precautions to take when pressure test ing ensur ing that all the vents are clear before commencing with the test. de
1.9During ro the condition of the glazing of the central electrodes stripping of the threads of the ceramic centres
1.10The Teleflex cable con sis quadrant, cable and pulleys push
Q2— Section header —
2.1Indicate whether the following statements are TRUE or FALSE by writing only rue .1 .1 .5\in the ANSWER BOOK
2.1.1In the pitot static system the vertical speed indicator relates the rate of change of static pressure to a rate of climb or descent.
2.1.2Extensive repair is the rep lacement of an entire part when a complicated part has been extensively damaged.
2.1.3The secondary purpose of weight and balance control is to ensure the safety of the aircraft, passengers and crew.
2.1.4Piston engine inspection during ove rha ul involves stripping off and replacing all the outside components.
2.1.5Two methods of pre oiling can be employed on piston engines after an overhaul , namely pressure pre oiling
2.2Choose term from COLUMN B that matches a part of the pneumatic riveting gun illustrated in COLUMN A. Write only the letter (A H\ next to the question number (
Q3— Section header —
3.1A night landing with an aircraft ended up being a slightly hard landing Name any TWO things that must be checked on the morning after this
3.2Define the term stress corrosion. (2\
3.3Explain the procedure when using the ultrasonic crack detection test. (5\
3.4Copy the following table for determining the empty weight and centre of gravity of an aircraft into your NSW ER BOOK and answer the following questions: Weighing point Scale reading
3.4.1Complete the table by filling in the blanks (4\
3.4.2Calculate the centre of gravity of the aircraft of which the data is found in the table. (2\ [15]15
Q4— Section header —
4.1An aircraft has undergone a mino in spection and structural rigging checks need to be carried out. State THREE checks that need to be carried out during these checks. (3\
4.2A pitot static system is illustrated in FIGURE 1 including the instruments that are attached to it. (5\ FIGURE 1
4.3
4.3.4\in the ANSWER BOOK. During routine inspection the terminal block and its terminals must be inspected for: 4. .1
4.3.2oose quick discon ect ions.
4.3.3Broken or loose locking wire.
4.3.4Security of attachment. (4 1\ (4\
4.4An aircraft returning from a flight has the fault tendency to yaw reported in its logbook. Before its next flight the fault has to be remedie
4.4.1In which manual will the fault and its corrective action be found? (1\
4.4.2Discuss the FOUR possible faults for an aircraft to yaw to one side. (4\
4.5A flying control system inspection has been com pleted and an operational check of the system has to be done. Explain this inspection. (4\
4.6What is the purpose of the thermometer used during the rigging of the flying control system? (2\ [23]23
Q5— Section header —
5.1An inspection on the i side of an aircraft fuel tank illustrated in FIGURE 3 is required during a major inspection of the aircraft. This is a very dangerous inspection that requires important precautions to be taken.
5.2The main landing gear of a business jet is illustrated in FIGURE 4 below. FIGURE 4
5.2.1What is the purpose of the (1\
5.2.2If leaks are detected on the (1\
5.2.3How can he le akage be detected on the actuators? (1\
5.2.4Would the operation of the actuators also be checked during an operational test of the hydraulic system ? Give reasons for your answer. (3
5.3of which the fuel/oil heat exchanger unit is one , illustrated in FIGURE 5 below FIGURE 5 Name a
5.45. When inspecting a crankcase, name any FOUR defects that could be found. A g as turbine engine s turbines are subject to high stresses and h at. Tu rbine
Q6— Section header —
6.1maintenance. State THREE components of the lubr cation system that have to be inspected. (3\
6.2FIGURE 7 (3\ (11041113\ 10 Copyright reserved
6.3FIGURE 8 contains an illustration of an aircraft constant speed propeller. FIGURE 8 During routine inspection the propeller components are given a careful examination to determine its condition. What would t
6.4pull plunger control is illustrated in FIGURE 9. FIGURE 9 When a routine inspection is done on the engine contr l syste m what would the (3\
6.5After an engine overhaul it must be tested in a test cell to run it in , to check for faults to determine its power output and to check the condit io
Mark Allocation
Total100 marks
Sections10 + 9 + 15 + 23 + 16 = 73 marks
Paper information
TitleDocument
SubjectAircraft Maintenance Theory
LevelN3
Document typeQuestion paper
Year2023
MonthDecember
Pages10
Downloads3
Examination context
Decade2020s
Years ago3y
SeasonSummer (SH)
Start dayFriday
Exam periodDecember 2023
Days since exam1,045
About Aircraft Maintenance Theory examination preparation
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A practical revision approach
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Archived on8 September 2026
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