2AVM
Airborne Vibration Monitor
3CDP
Compressor Discharge Pressure
4CPR
Compressor Pressure Ratio
5EGT
Exhaust Gas Temperature
6EPR
Engine Pressure Ratio
8FOD
Foreign Object Damage/Debris
9HPC
High Pressure Compressor
10HPT
High Pressure Turbine
11LPC
Low Pressure Turbine
12LPT
Low Pressure Turbine
13N1
Rrotational speed of front compressor, rear turbine, and inner connecting shaft
14N2
Rotational speed of rear compressor, front turbine, and outer shaft
18Ps3
Static pressure at Station 3
19Psia
pounds per square inch, absolute
20Psig
pounds per square inch, gage
21Psid
pounds per square inch, differential
22Pt2
Total Pressure at station 2
23Pt7
Total pressure at station 7
24Tamb
ambient temperature
26Tt2
Total temperature at station 2
30ΔP
differential pressure
31θ
theta, relative temperature ratio
32δ
delta, relative pressure ratio