1) With what would you check the bonded joints of a wooden aircraft structure? Report

A feeler gauge

A plastic strip

A screwdriver

2) What is an open assembly time? Report

The time elapsing between the application of the adhesive and the assembly of the joint components

The time between the adhesive being applied to the joint surfaces and their assembly

The time elapsed from the adhesive being applied to the joint surfaces to them being clamped

3) The defects not allowed at all on wooden structures are Report

mineral streaks

pitch pockets

checks, shakes and splits

4) The basic structure of an aircraft made of wood can be Report

monocoque

non-monocoque

non-monocoque, monocoque, semi-monocoque

5) When a full inspection for corosion is to be carried out on a wooden aircraft you would Report

Jack and trestle the aircraft to the rigging position

Remove all the fabric/cloth prior to inspection

Bring the aircraft into the hangar for 2 to 3 days prior to the inspection

6) For fungus to cause wood decay in a wood structure, the moisture content in the wood must be at least Report

5%

20%

85%

7) The normal moisture content in the wood of a wooden aircraft structure is Report

0-2%

10-12%

20-30%

8) How is the moisture content within the wood of a wood aircraft structure determined? Report

By inserting the probe of a moisture meter

By measuring the size of the water stains at joints

By weighing the wood structure before and after drying it

9) Except where specified by the manufacturer, a wooden spar may be spliced Report

at no point

at any point

at any point except under the wing attachment fittings

10) Replacement of a wooden spar is Report

a minor repair

a major repair

only permitted by the manufacturer

11) A crack is found in a wooden spar, you Report

must replace the spar section

must replace the entire spar

might be able to repair the spar

12) Wood sealants used on wooden aircraft structures are for Report

helping to prevent wood cracking

improving aerodynamic efficiency

reducing the requirement for sanding

13) To determine whether an aircraft wooden structure surface is compound curvature, you would use Report

a sheet of paper

a trammel

a curvature gauge

14) To assist the bending of plywood, a heated bending former must be heated to a temperature of Report

100^oC

150^oC

300^oC

15) A splayed patch repair may be used on plywood damage which does not exceed Report

10 times the skin thickness

15 times the skin thickness

20 times the skin thickness

16) A surface patch to a plywood structure may be a large as Report

50 inch perimeter

50 inch diameter

50 sq.inch area

17) The steepest slope permitted on the scarf of a scarfed plywood repair is Report

1 in 4

1 in 12

1 in 20

18) The maximum size damage to plywood skin that may be repaired with a fabric patch is Report

0.5 inch diameter

1.0 inch diameter

3.0 inch diameter

19) The doubler used to support a scarfed patch plywood repair should be made from plywood of a minimum Report

1/4 inch thick

1/8 inch thick

3/8 inch thick

20) An aircraft wooden structure must be surface finished and sealed Report

on the inner surfaces only

on the outer surfaces only

on both the outer and inner surfaces

EASA Questions Module 6: Materials Set 5: Wooden Structures

Set 1: Materials - Ferrous

Set 2: Materials - Ferrous

Set 3: Materials - Non-Ferrous

Set 4: Composite & Non-Metal

Set 5: Wooden Structures

Set 6: Fabric Covering

Set 7: Corrosion

Set 8: Screw Threads

Set 9: Bolts, studs & screws

Set 10: Locking devices

Set 11: Rivets

Set 12: Pipes and Unions

Set 13: Bearings

Set 14: Transmissions

Set 15: Control Cables

Set 16: Electrical Cables