Maintenance Practices M7.18 Flashcards
What is primary structure
Highly stressed
If damaged may result in loss of aircraft
What is LAMP
Light Aircraft Maintenance Program
CAA say how often certain checks must be done
What is LAMS
Non EASA light aircraft
What is corrosion level definition Level 1
Regularly found - no change in program required
What is corrosion definition Level 2
Program not effective - needs amendment
What is corrosion level 3
Most serious
Program not effective and all aircraft in fleet must be checked
What happens when bearings are overlubricated
CHURNING
High temps can occur which is a fire hazard
What are the two main bearing defects
- False brinelling
- True Brinelling
What is elyptical wear marks in an axial direction on a bearing
False brilelling
What is it called when bearings have static overload or severe impact
True brinelling
After cleaning bearings what must be done
They must be re greased within 2 hours
What must be done if a component has intergranular corrosion
Must be replaced
What type of endoscope must be used in a heat sensitive area
2nd type because they provide cold light
What is a type 1 endoscope
Fixed
What is a type 3 endoscope
Flexible
What is allowable damage within the damage classifications
Slight or little insignificance
What is non allowable damage
Exceeds allowable damage
What is non repairable damage
Replacement
What are the main corrosion removal techniques
- By hand for light corrosion
- wire brush (stainless or aluminium only
- grinding wheels (not on ally)
- abrasive blasting
What is abrasive blasting used for
To remove filiform corrosion
When blending titanium what must you have on standby
Non water based fire extinguisher
What is CAA surface protection
Chromic Acid Anodising
What is CCC surface protection
Chemical Conversion Coating
How many layers of paint do airbus aircraft have
3
How many layers of paint do Boeing airbus have
2
What are the 3 types of surface protection repair
- Fixing
- partial
- Basic renewal
What type of paint must be avoided on antennas
Electrically conductive