75 - AIR
- 75-00 AIR - GENERAL
- 75-21 HPT ACTIVE CLEARANCE CONTROL SYSTEM
- 75-22 LPT ACTIVE CLEARANCE CONTROL SYSTEM
- 75-23 ROTOR ACTIVE CLEARANCE CONTROL SYSTEM (RACC)
- 75-24 ECU COOLING SYSTEM
- 75-26 TRANSIENT BLEED VALVE SYSTEM
- 75-31 VARIABLE BLEED VALVE SYSTEM (VBV)
- 75-32 VARIABLE STATOR VANE (VSV) SYSTEM
- 75-34 BLEED BIAS
- 75-41 NACELLE TEMPERATURE INDICATING