Chapter 6 - Airframe Facilities

Question 1

What are the facilities of the centre fuselage?

Answer 1

Fuel bay
Fuel replenishment points 
Transmission attachment points 
Picketing points 
Earth point 
Ground power socket 
U/C attachment points 
Jacking points 
Datum reference/levelling
Signs and symbols

Question 2

What are the facilities of the rear fuselage?

Answer 2

Transmission supports
Gearbox mounting points 
Stabiliser attachment points 
Tail skid 
Radio and aerials
Static vents 
Datum points 
Blade tie down fittings 
Picketing points 
Navigation lights 
Signs and symbols

Question 3

What are the facilities for the front fuselage?

Answer 3

Jacking points
U/C attachment points 
Landing lamp
Navigation lights 
Signs and symbols
Vents 
Access panels 
Drains 
Pitot head 
Datum points 
IC socket

Question 4

Where are the drains located?

Answer 4

Water drainage apertures are located at the bottom of structural parts which are susceptible to the accumulation of water in order to avoid corrosion.

Question 5

What are landing lamp used for?

Answer 5

They are used by aircraft to illuminate the terrain and runway ahead during takeoff and landing.

Question 6

What are the positions and colours for the nav lights?

Answer 6

Port (red)
Starboard (green)
Tail (white)

Question 7

Where can anti collision lights be fitted?

Answer 7

They can be fitted on the front or centre fuselage, upper or lower and on the tail of the aircraft.

Question 8

What is the pitot head?

Answer 8

The pitot pressure is a measure of ram air pressure.

Question 9

The greater the difference between the ___ ________ and the _____ ________, the higher the airspeed recorded.

Answer 9

Ram pressure

Static pressure

Question 10

What is the pitot tube susceptible to?

Answer 10

It’s susceptible to becoming clogged by ice, water, insects or some other obstruction.

Question 11

What are datum points there for?

Answer 11

Used to act as reference points when carrying out checks on the airframe to determine if the structure has suffered distortion, measurements are taken down and compared to those laid down in publications.

Question 12

What are intercom sockets used for?

Answer 12

Used to communicate with aircrew whilst carrying out maintenance, also located towards the rear of aircraft in avionics bays or wing tips.

Question 13

What Are the panels and doors usually secured by?

Answer 13

Screws or quick release fasteners.

Question 14

What are vents?

Answer 14

Vents are essential openings in the aircraft structure linking otherwise sealed compartments to the atmosphere.

Question 15

What are the 3 types of functions for vents?

Answer 15

Venting fuel tanks for atmospheric and refuelling proposes
Cabin/compartment air con
Static vents

Question 16

What is the symbol for ground power?

Answer 16

E

Question 17

What is the symbol for a jacking point?

Answer 17

Black box with 2 slanting legs

Question 18

Where is the fuel bay housed?

Answer 18

Housed between bulkheads to protect aircrew on the event of leakage and vented to atmosphere to prevent pressure build up.

Question 19

What symbol represents a fuel point?

Answer 19

✨

Question 20

What should a fuel replenishment point be examined for?

Answer 20

For leaks and witness marks used to identify secure locking.

Question 21

What are the 2 types of fuel replenishment?

Answer 21

Gravity or pressure refuelling.

Question 22

What is a picketing point and what are they used for?

Answer 22

To minimise the risk of damage to parked aircraft when high winds are forecast. They are holes or attachment lugs provided in the stronger parts of the structure.

Question 23

What is a earth point?

Answer 23

An earth point is any unwanted build up of electrical charge on the aircraft.

Question 24

What is ground power?

Answer 24

It’s the ability of the aircraft, whist on the ground, to be ab,e to gather more external power from an outside source.

Question 25

What do static vents do?

Answer 25

Static vents provide outside air pressure to cockpit indications. And also tell you the true altitude.

Question 26

What are blade tie down fittings for?

Answer 26

To reduce the space required for parking, servicing or storing a helicopter, the main rotor blades can be folded to lie along side of the fuselage.

Question 27

What is the purpose of the tail skid or flangable fairing?

Answer 27

It is attached to the tail end of the boom and it protects the tail and the tail rotor in the even of a landing with the nose up.

Question 28

What are stabiliser attachment points examined for?

Answer 28

They are examined for security of attachment and amaze caused by foreign objects, bird strikes etc.

Question 29

What are aerials and antennas examined for?

Answer 29

These must be examined for attachment and check that drain holes are clear.