Maintenance Quiz

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aircraft engineers working on aircraft, referring to and discussing information on a laptop device.
image: Adobe stock | zorandim75
  1. When re-covering a fabric-covered aircraft, the following must apply:
    1. The covering material doesn’t have to meet any particular specification as long as it is supplied as an aviation product.
    2. The covering material must be stronger than the original material.
    3. Materials used must meet the OEM specifications or comply with approved data such as EO or STC for an alternate system of covering.
    4. Fabric repair patches should be manufactured from thicker fabric compared to the material used to cover the surrounding structure.
  2. Covering practices (fabric) should be as follows:
    1. Fabric should be applied so that with the warp or fill threads are parallel to the line of flight.
    2. The method of attachment need not be identical to the original as far as strength and reliability are concerned.
    3. Only the blanket method is allowed for attaching the fabric.
    4. The envelope method may be used to attach the fabric if approved by the OEM.
  3. When re-covering or repairing a fabric-covered control surface, the following precautions apply:
    1. Statically balanced flight controls must be checked in accordance with the approved data following any fabric work.
    2. No control surface balance is needed on high-speed aircraft as they have enough momentum to preclude flutter.
    3. No control surface balance is needed on slow aircraft as they don’t fly fast enough to induce flutter.
    4. Wing flaps that are fabric covered also need to be balanced.
  4. Where would you locate the requirements for minimum equipment regarding anti-collision lights for an aircraft operated under night visual flight rules?
    1. In the flight manual, pilots operating handbook, or equivalent.
    2. As listed in the equipment list.
    3. In the Part 91 Manual of Standards (MOS 26.22).
    4. In CAO 100.5.
  5. Structural maintenance of composite structure aircraft can be carried out by:
    1. The holder of a B1 license with no further qualifications.
    2. The holder of a B1 license with a CASA-approved qualification working for a CAR 30 maintenance organization.
    3. An independent B1 license holder with a CASA-approved qualification not working for a CAR 30 organization.
    4. The holder of a B1 license with no further qualifications working for a CAR 30 maintenance organization.
  6. You notice a placard has become illegible. Where can you look for the required placard wording?
    1. In the aircraft flight manual (FM) or pilot operating handbook (POH) – including supplements.
    2. In the Type Certificate Data Sheet (TCDS).
    3. In the maintenance manual.
    4. Any of the above.
  7. Regarding maintenance of aircraft exhaust systems:
    1. A cracked exhaust system in light aircraft in the area of a cabin heater muff may introduce a poisonous gas (carbon monoxide) into the cabin which may disable the crew.
    2. Exhaust systems are very robust and only need a cursory visual inspection at the periodic inspection.
    3. A significant crack in an exhaust system will never cause a fire because the exhaust gas is not hot enough.
    4. Exhaust systems on turbo-charged aircraft are not susceptible to cracking as they are manufactured from inconel.
  8. What would be the most likely cause of low manifold pressure (boost) as the aircraft climbs and the pilot compensates by increasing throttle movement?
    1. The wastegate is stuck closed.
    2. The controller is sticking.
    3. The oil pressure is set too high.
    4. The wastegate is stuck open.
  9. In relation to structures and propellers, how is ‘composite’ defined?
    1. The item is manufactured from carbon fibre.
    2. The item is manufactured from foam with strengthening plywood embedded in it to provide strength.
    3. The item is made up of several parts or elements.
    4. The item is molded over a form and subjected to heat and pressure in an autoclave.
  10. Control surface flutter may be caused by:
    1. An underbalanced control surface.
    2. An overbalanced control surface.
    3. Control cables not tensioned correctly.
    4. Any of the above.
  11. Recently, CASA announced the first release of alpha-numeric aircraft registration marks.
    1. CASA did this because of pressure from industry to replicate the US system.
    2. CASA did this because the original registration combinations were running out.
    3. This allows for a total of four alpha-numeric combinations after the VH-, like other countries.
    4. All alphanumeric combinations became available in the first release.

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