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System identification markings are primarily abbreviations of the system.
MARKINGS
Sys
Fuel
Hyd
HP
LP
Elect
AV
Flt Cont
Main Rotor
Tail Rotor
Air
Air Cond
BL Air
BLC
N
2
O
2
Eng Contr
Pow Tr
EJ
More than one identification marking may be used to describe
the system (e.g., HP, Hyd).
Figure 1-3.
SYSTEM/MEANING
Damage to unknown system.
Fuel
Hydraulic
High Pressure
Low Pressure
Electrical
Avionics
Flight Control
Main Rotor Group
Tail Rotor Group
Pneumatic
Air Conditioning
Bleed Air System
Boundary Layer Control
Nitrogen
Oxygen
Engine Control
Power Train
Ejection
NOTE
Damage Assessment Markings (Sheet 3 of 3)
TM 55-1520-228-BD
GENERAL INFORMATION
1-11/(1-12 Blank)
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