CHAPTER 9 - METAL AIRFRAME REPAIRS Flashcards
POLICY
Where are new repair instructions normally found?
Topic 6
Special Instructions (Technical)
Modification leaflets
POLICY
Which repair organisation deal with fixed-wing aircraft repairs?
71 Inspection and Repair Squadron (RAF Wittering)
POLICY
Which Repair Organisation deals with rotary-wing aircraft repairs?
1710 Naval Air Squadron (Portsmouth)
DAMAGE TYPES AND GROUPS
What are the 2 damage types?
Local
Secondary
DAMAGE TYPES AND GROUPS
What are the two types of local damage?
Material failure damage
Accident damage
DAMAGE TYPES AND GROUPS
What is a possible sign of secondary damage?
Deformation of the bolt or rivet holes or by some bent structure
DAMAGE TYPES AND GROUPS
When examining a structure for local or secondary damage, what should you look out for?
- Broken or loose rivets
- Deformation of the bolt or rivet holes
- Scores or abrasions
- Dents or distortion
- Cracks
- Damage to FRP structure and panels
- De-bonding
DAMAGE TYPES AND GROUPS
What are the three group of damage?
Permitted
Repairable
Repair by Replacement
DAMAGE TYPES AND GROUPS
Give three possible examples of permitted damage..
Smooth dents with no cracks
Abrasions
Sharp Corners
DAMAGE TYPES AND GROUPS
Stat here examples of a repairable damage…
- Scratches more than 10% in thickness that must be cleaned out, stop drilled and patched
- Dents that require removal and reinforced with a stiffening angle
- Crack that must be stop drilled and patched
DAMAGE TYPES AND GROUPS
What is the main damage which requires replacement?
Distortion
REPAIR TYPES
What are the 2 standard metal repairs?
Flush Patch
External Skin Patch
REPAIR TYPES
When is an external patch mostly used?
When the damage to the skin is too small for a filler plate
AIRCRAFT REPAIR SEQUENCE
List the repair sequence in the correct order?
Investigate the damage
Damage Group
Clean out the damaged area
Repair Procedure
AIRCRAFT REPAIR SEQUENCE
Who approves the repair procedures?
Design Authority
