TM 1-1520-238-10
Change 9
B-1
APPENDIX B
ABBREVIATIONS AND TERMS
SYMBOLS
*
Used as a decimal
C
Degrees Celsius
F
Degrees Fahrenheit
F
Change in Frontal Area
Q
Torque change for F of 5 sq. ft.
A
A
Ampere
AH
Attack Helicopter
AC, ac
Alternating Current
A/C
Aircraft
ACC
Accumulator
ACM
Auto Control Module
ACQ
Acquire
ACT, ACTN
Action
ADEN/DEFA
Armament Development Enfield/Direction Etude Fabrication (ADEN – brass
cartridges and DEFA – steel cartridges for 30mm ammunition)
ADF
Automatic Direction Finder
ADMIN
Administration
ADS
Air Data Sensor
AGL
Above Ground Level
ALT
Altimeter
AM
Amplitude Modulation
AMMO
Ammunition
