ATA 21 — Air Conditioning

78,383 parts classified under this chapter

Reliability rollup

100%Median scrap propensity

4,868 parts · 17,977 SDR reports

From FAA Service Difficulty Reports

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
2204600-2	Air Cycle Machine	Honeywell	TBM 700	21	Environmental / Cabin	PMA
2204673	ACM	—	767-300 767	21	unknown	OEM
220470001	ACM	—	—	21	Environmental / Cabin	OEM
220470061	ACM	HNYWL	Gulfstream GIV	21	Environmental / Cabin	OEM
2205	Combustion Tube	C & D Associates	—	21	Environmental / Cabin	PMA
2205120	COOLING TURBINE	—	ATR 72	21	Environmental / Cabin
2205120-3-1	Air Cycle Unit	Honeywell	—	21	Environmental / Cabin	PMA
22051201	AIR CYCLE MACH	—	ERJ-145 Embraer EMB-120 Brasilia+1	21	Environmental / Cabin
22051204	COOLING TURBINE	Honeywell	ATR 42-500 ATR 42+1	21	Environmental / Cabin	OEM
22051204SR1	ACM	—	ATR 72	21	unknown	OEM
2205170	A/C PACK	Honeywell	737-400 737	21	Environmental / Cabin	OEM
22051701	ACM	—	737-300 737-400+3	21	Environmental / Cabin	PMA
220517011	ACM	—	737-400	21	Environmental / Cabin	PMA
22051702	FILTER	Boeing	737-400 737	21	unknown	OEM
2205172	ACM	Honeywell	737-400 737	21	Environmental / Cabin
22054501	ACM	—	MD-11	21	Environmental / Cabin	PMA
2205480-1	MACHINE-AIR CYCLE	—	—	21	Environmental / Cabin
22054903	COOLING TURBINE	Honeywell	—	21	Environmental / Cabin	OEM
22055802	ACM	Honeywell	Learjet 45	21	Environmental / Cabin	OEM
2205590-1	Air Cycle Machine	Honeywell	—	21	Environmental / Cabin	PMA
2205630-2	Air Cycle Machine Outline	Honeywell	—	21	Environmental / Cabin	PMA
2205820-3	Cooling Turbine	Honeywell	—	21	Environmental / Cabin	PMA
2205820-3, -4	Cooling Turbine	Honeywell	—	21	Environmental / Cabin	PMA
2205820-4	Cooling Turbine	Honeywell	—	21	Environmental / Cabin	PMA
2205970-1	Air Cycle Machine	Honeywell	—	21	Environmental / Cabin	PMA
22061701	FAN	—	ATR 72	21	Environmental / Cabin	PMA
220640	ACM	—	737-700 737	21	unknown	OEM
2206400	ACM	—	737-700 737	21	unknown	OEM
22064001	ACM	HNYWL	737-800 737	21	Environmental / Cabin
22064002	A/C PACK	AIRESRCH	737-400 737-700+1	21	Environmental / Cabin	OEM
22065201	ACM	—	717-200	21	unknown	OEM
22065202	ACM	Honeywell	717-200	21	Environmental / Cabin	OEM
22066101	COOLING TURBINE	Cessna	—	21	Environmental / Cabin
2206725-2	SHAFT - FAN	—	A340-600 A340-500	21	Environmental / Cabin	OEM
2206725-2	SHAFT - FAN	—	A340-600 A340-500	21	Environmental / Cabin	OEM
2206726-1	SHAFT - THRUST	—	A340-600 A340-500	21	Environmental / Cabin	OEM
2206726-1	SHAFT - THRUST	—	A340-600 A340-500	21	Environmental / Cabin	OEM
22095-01	VALVE-CHECK	—	—	21	Environmental / Cabin
22096-01	VALVE-CHECK	—	—	21	Environmental / Cabin
221-0 Rev F Group List No 221-0 dtd 9/12/85 or later FAA approved rev	Heater Assy (LH)	Lori Inc	—	21	Environmental / Cabin	PMA
221-1 Rev A Group List No 221-1 dtd 9/12/85 or later FAA approved rev	Heater Assy (LH)	Lori Inc	—	21	Environmental / Cabin	PMA
221-34 Rev C Group List No 221-34 dtd 9/12/85 or later FAA approved rev	Heater Assy (RH)	Lori Inc	C172 Skyhawk	21	Environmental / Cabin	PMA
221-4266-507	duct	other	—	21	Environmental / Cabin	OEM
221-4275-507	duct	other	—	21	Environmental / Cabin	OEM
221-4529-503	duct	other	—	21	Environmental / Cabin	OEM
221-4751-505	duct	other	—	21	Environmental / Cabin	OEM
221-5303-505	duct	other	—	21	Environmental / Cabin	OEM
22125BC060020L	bolt	airbus helicopters inc american eurocopter	—	21	Consumables / Hardware	OEM
2214014	RESTRAINT	—	767-300 767	21	unknown	OEM
22140141	RESTRAINT	—	767-300 767	21	unknown	OEM