Long Questions

Question 1

Explain why crimping connections are preferred to soldered connections

Answer 1

1. Mechanical strength - ensure connection remains intact in harsh conditions such as vibrations and mechanical stress
2. Reliability - since less prone to failure
3. Corrosion resistance - since no additional material is introduced such as solder that can corrode over time
4. Weight consideration - no extra material is added

Question 2

What do you check when inspecting a crimp connection

Answer 2

1. Ensure insulation grip
2. Ensure crimping at crimped end compresses the sleeve underneath
3. Ensure cable is supported by sleeve
4. Check wire for correct specification and damage
5. Check wire size so that stripped conductor extends 0.8 mm beyond the correct size terminal.

Question 3

Why is aircraft general hardware generally cadmium plated

Answer 3

1. Reliable and cost-effective
2. Provides corrosion protection through method of sacrificial corrosion
3. Reduces friction as it has a low coefficient of friction
4. Corrosion resistant

Question 4

What is the standard maintenance practice for determining the length and diameter of a universal rivet?

Answer 4

1. The diameter should be 3 times the material thickness
2. The length should be 1.5 times the diameter plus the grip length.

Question 5

What are the 3 types of stores

Answer 5

1.Quarantine
2. Bonded
3. Unserviceable

Question 6

Describe the standard maintenance practice to be implemented when towing an small aircraft.

Answer 6

1. Can be moved by hand
2. Never at propeller or control surfaces
3. A tow bar must be used when pushing
4. Can only be pushed at points specified by the manufacturer

Question 7

Describe the standard maintenance practice to be implemented when towing a large aircraft.

Answer 7

1. Use special tow bar and shear pins connected to a vehicle to tow the aircraft
2. A pilot or a qualified operator operates the breaks
3. Extra personal should be assigned to watch wing tips and tail for clearance
4. On completion the aircraft should be towed in a straight line for a few feet to reduce side loads on the main undercarriage

Question 8

Explain why carbon steel wire brushes should NOT be used for the removal of corrosion from magnesium alloys.

Answer 8

1. Mg is anodic to almost all the material used for corrosion removal
2. The corrosion cannot normally be removed with metallic tools
3. They are likely to leave contaminants embedded in the metal and these contaminants will cause further damages

Question 9

What is the purpose of an EASA Form 1

Answer 9

It identifies the airworthiness status for a repaired aircraft component to certify the work done within the EU.

Question 10

Explain the advantages of and disadvantages of of using either copper or aluminum electrical cables

Answer 10

1. Cu is a better conductor than Al
2. Cu has lower specific resistance
3. Cu is more durable and easy to work with
4. Al is lighter

Question 11

Describe the matters that must be considered when splicing a cable

Answer 11

1. Not above 10 AWG
2. Not high tension cable
3. Not in a temp zone
4. Not for specific use
5. No splices installed inside a conduit
6. No splices under clamps and supports

Question 12

Describe the procedure that is involved in when determine the CoG of an aircraft

Answer 12

1. Consult chapter 8 of AMM and Chapter 6 of AFM
2. Drain aircraft of fuel and fill up all oil and hydraulic tanks
3. Make sure all its equipment is installed
4. Put flight control into position mentioned in AMM
5. Ensure weighing equipment is calibrated and the tare weight of chocks etc was measured
6. Weight and record the weights at each landing gear
7. CoG is calculated by dividing total weight by total moment
8. Moments are calculated by multiplying mass at each landing gear by their moment arm, which is given in the AMM or AFM
9. Ensure CoG is within limits.

Question 13

Describe how you would park and aircraft.

Answer 13

1.park aircraft into face of wind
2. Parking breaks on
3. Use chocks
4. Drain valves to remove water
5. Cover, plugs and gust lock on landing gear pins
6. Check engine for Ice

Question 14

Explain the procedure of of inspecting a heavy landing

Answer 14

1. Check for oil leakage from OLEOS ( Oil/Elastomeric shock absorbers)
2. Check bearing
3. Check for Skin buckling and smoking rivets
4. Inspect wheels for cracks
5. Check tyre threads and creep marks for attachments point symmetry

Question 15

Describe the process of refueling an aircraft.

Answer 15

1. Prepare the aircraft and verify fuel requirements. Remember to ground plane when preparing aircraft.
2. Conduct safety checks on aircraft and refueling equipment.
3. Connect fuel hoses securely to the aircraft’s fuel ports.
4. Control fuel flow and monitor the process closely.
5. Remain vigilant for leaks or hazards and implement safety measures if needed.
6. Shut off fuel flow and disconnect hoses when refueling is complete.
7. Conduct post-refueling checks and record fuel quantities.
8. Clear the area and ensure safety before resuming operations.

Question 16

Explain the procedure of De-Icing an aircraft.

Answer 16

1. Position the aircraft in a designated de-icing area.
2. Apply heated de-icing fluid to the aircraft’s surfaces using a de-icing truck equipped with spray nozzles.
3. Allow the fluid to melt and remove any accumulated ice, snow, or frost.
4. Ensure thorough coverage of critical surfaces such as wings, tail, and control surfaces.
5. Monitor weather conditions and repeat the de-icing process if necessary.
6. Conduct post-de-icing checks to verify that all surfaces are free from ice and snow.
7. Coordinate with air traffic control for departure clearance once the aircraft is ready.

Question 17

Describe how you would Moor and aircraft

Answer 17

1.park aircraft into face of wind
2. Parking breaks on
3. Use chocks
4. Tie down aircraft with chains, not rope because it’s less elastic
5. Drain valves to remove water
6. Cover, plugs and gust lock landing gear pins
7. Check engine for Ice