1) When is a turnbuckle not in safety? Report

When you can see daylight through the hole

When a small diameter wire can be passed through the inspection hole

When a wire of the same diameter as the inspection hole can be passed through

2) How do you check a turnbuckle is in safety? Report

Use the inspection hole or count the threads showing

Ensure that the turnbuckle cannot be turned by hand

Make sure no threads are showing at either end of the turnbuckle

3) British aircraft cables are classified by their Report

breaking load in hundredweights

breaking loads in lbf, where 1 lbf = 4.448N

diameter and breaking load in Hundredweights

4) Cables are preferred to other control systems because Report

single braid allows for 2 way directions

they are strong and light

they maintain slight mechanical advantage over push/pull systems

5) Turnbuckles, depending on type, are locked by Report

stiff nuts

locknuts and wire

castleated nuts and split pins

6) Cable tension is maintained by Report

a grommet

a cable tension regulator

a fairlead

7) To correctly tension cables, it can help to Report

take up initial slack by additional pulleys

have control surface locks in to support weight and adjust turnbuckles equally

use a cable run with turnbuckles at least every eight feet

8) British turnbuckles are checked for safety by Report

attempting to pass a hardened pin probe through the inspection hole

attempting to pass locking wire through the hole

looking through the hole and checking for threads showing

9) Turnbuckles are correctly fitted when Report

both rods are seen to touch in the inspection hole

both rods enter the barrel by the same amount

the inspection hole is blind or the required number of threads are showing

10) How is the diameter of a cable measured? Report

Overall diameter

Diameter of one wire only

Diameter of one wire multiplied by the number of wires

11) 9 * 16 cable is Report

9 strands of 16 wires

9 cables having 16 turns per inch

cable size 9/16 inch diameter

12) Turnbuckles are used to Report

join the two ends of the cable

adjust major tension on the cable

adjust minor tension on the cable

13) A turnbuckle is in safety when Report

the colour on the threads is showing

it is lockwired

the witness hole is covered or the amount of threads showing at the cable end is in accordance with the Maintenance Manual

14) A turnbuckle can be safetied by Report

teflon lock nuts

lock nuts and safety wirelocking

doesn't require to be safety locked

15) Spring locking clips for turnbuckles can be used on Report

no flying control cables

all flying control cables

only on trim control cables

16) What is the small hole on a swaged turnbuckle for? Report

To check for moisture deposits

To check if correct amount of cable has been inserted before swaging

To alloy the turnbuckle to be wire locked

17) When checking the safety of turnbuckles you should use what? Report

Visual check

Wire the same diameter as the inspection hole

Wire smaller than inspection hole

18) Cable minimum breakage strain for British and American is measured by Report

hundredweight for British, c.s.a. and pounds for American

hundredweight for British, c.s.a. hundredweight for American

pounds for both

19) If a pulley shows signs of wear on one side Report

the cable is too tightly tensed

the pulley is too large for the cable

the cable is misaligned

20) A 7x7 cable has seven strands each of Report

fourteen wires

seven wires

one wire

EASA Questions Module 6: Materials Set 15: Control Cables

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