ATR ATR 72

1,122 parts applicable to this airframe — turboprop

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
011494500	FAN	—	ATR 72	21	Environmental / Cabin	PMA
0L3042BPE	LIGHT	—	ATR 42 ATR 72	33	Electromechanical	PMA
1005383400	SELECTOR VALVE	—	ATR 42-300 ATR 42+1	32	unknown
1011191	LIGHT	—	Embraer EMB-120 Brasilia ATR 72	33	Electromechanical	PMA
1011309111	LIGHT	—	ATR 42 ATR 72	33	Electromechanical	PMA
1050032	CONTROL UNIT	Thales	ATR 42-300 ATR 42+1	24	Electromechanical	OEM
10750E	FUEL OIL HEATER	—	ATR 72	73	Fuel Systems	PMA
1111084	OUTLET FILTER	Goodrich	Dash 8-400 ATR 42-300+3	73	unknown	OEM
1155561	LAMP HOLDER	—	ATR 42-300 ATR 42+1	33	Electromechanical	PMA
2110449110	CLAMP	—	ATR 72	21	Consumables / Hardware
22061701	FAN	—	ATR 72	21	Environmental / Cabin	PMA
2711212700300	BELLCRANK	—	ATR 72	27	Flight Controls	OEM
301160	LIGHT	—	ATR 42-300 ATR 42+1	33	Electromechanical	PMA
30120003012001	BATTERY PACK	—	ATR 72	33	Environmental / Cabin	PMA
3012011	POWER SUPPLY	—	ATR 72	33	Electromechanical	PMA
3012630	CONTROL PANEL	NEC	ATR 72	33	Electromechanical
3013017	BATTERY PACK	NEC	ATR 42-500 ATR 42+1	33	Electromechanical	OEM
3034216	NOZZLES	—	ATR 72	73	Engine Accessories	PMA
3072000	POWER SUPPLY	—	ATR 72	33	Electromechanical	OEM
311161801	OIL COOLER	—	ATR 72	72	Engine Accessories	OEM
32448551214	HMU	—	ATR 72	73	Fuel Systems	PMA
5211309111	STRUCTURE	—	ERJ-135 ERJ-145+2	33	Structures	PMA
7007552	RESISTOR	—	ATR 42-300 ATR 42+1	33	Electromechanical	PMA
8210161	PROP GOVERNOR	—	Dash 8-400 Dash 8+1	61	Engine Accessories	PMA
8ES00558800	READING LIGHT	—	ATR 42-300 ATR 42+1	33	Electromechanical	PMA
C245890001	UPLOCK SENSOR	—	ATR 42-500 ATR 42+1	32	Electromechanical	PMA
F96GA010	HANDLE	—	ATR 72	32	unknown
FST5X201A	BALLAST	—	ATR 42 ATR 72	33	Interior / Furnishings	PMA
NTA118511	ROD	—	ATR 72	32	unknown
OL307BPEGPL	LIGHT	GE	737-300 737-500+8	33	Electromechanical	OEM
S2711205500300	BELLCRANK	—	ATR 72	27	Flight Controls	PMA
S2711211600200	IDLER ARM	—	ATR 72	27	Flight Controls	PMA
S2918056113400	LINE	—	ATR 72	29	unknown
S52376104202	DOOR FRAME	AEROSP	ATR 42 ATR 72	52	Structures	OEM
S5247765700200	SHOOT BOLT	—	ATR 42 ATR 72	52	Consumables / Hardware	PMA
S5317220120805	SKIN	—	767-300 ATR 42-300+2	53	Structures	PMA
S5337129320001	DRAIN TRACK	—	ATR 42-300 ATR 42+1	53	Interior / Furnishings	PMA
S53371293202	ATTACH FITTING	AEROSP	ATR 42-300 ATR 42+1	52	Structures	OEM
S53572200206	FRAME	AEROSP	ATR 42-300 ATR 42+1	53	Structures
S53577400200	ANGLE	—	ATR 72	53	Structures	PMA
S53577400201	ANGLE	—	ATR 72	53	Structures	PMA
S53671217211	CLOSEOUT PANEL	AEROSP	767-300 ATR 42-300+2	53	Structures	OEM
S5367131831001	THRESHOLD	—	767-300 ATR 42-300+2	53	Structures	PMA
S5367240725201	FLOORBEAM	—	767-300 ATR 72	53	Structures	PMA
S5367240825400	FLOORBEAM	—	767-300 ATR 72	53	Structures	PMA
S53672409218	FLOOR BEAM	AEROSP	767-300 ATR 42-300+3	53	Structures	OEM
S5367240921801	FLOOR BEAM	—	767-300 ATR 42-300+2	53	Structures	OEM
S53678001224	SEAT TRACKS	AEROSP	767-300 ATR 72	53	Interior / Furnishings	OEM
S53678001226	SEAT TRACKS	AEROSP	767-300 ATR 72	53	Interior / Furnishings	OEM
S5367800210	SEAT TRACK	—	767-300 ATR 42-300+2	53	Interior / Furnishings	PMA

Utilization & cargo trend(US carriers, 2015–2025)

ATR family rollup — BTS T-100, domestic + international

Cycles per aircraft

2422025

20152025

2020: 278

Recovered to 176% of 2019 (2024 vs 2019)

Freighter share of departures

24%→44%2015 → 2025

20152025

Est. US-registered fleet

642025

20152025

US carriers only (BTS T-100, domestic + international segments) — foreign-carrier flying is excluded, so global utilization runs higher. Fleet size is reconstructed from the FAA registry (built on or before each year, not yet deregistered) — an approximation. Freighter share counts departures with zero passengers and freight aboard — a proxy for freighter/combi operations, not a tail-by-tail conversion count. Missing years render as gaps.

USM supply — retirements & teardowns(2023–2026)

ATR family — FAA registry deregistrations

Left the US registry

34aircraft

Stayed domestic

10vs 24 exported

Avg age at retirement

18.7years

Still US-registered

64aircraft

Where this family's parts catalog concentrates — the systems most exposed to incoming teardown supply

43.3%(1,673)

10.8%(417)

7.1%(276)

5.8%(224)

ATA 32 — Landing Gear

5.7%(220)

FAA registry data. Domestic deregistration is a teardown proxy — it also captures re-registrations and some unflagged exports, so it is not a confirmed part-out count; exported aircraft left the US fleet intact and are not USM supply. ATA shares reflect where this directory's parts for the family concentrate (parts in parentheses) — a coverage signal, not the aircraft's bill of materials or a teardown-yield forecast.

Engine-program supply pressure(since 2023)

FAA registry — US-registered fleet

Engines account for roughly half of all MRO spend, so engine programs shedding aircraft are where retirement supply carries the most value.

Engine model	Active tails	Engine units	Retired since ’23	Exported	Avg age at dereg
P&W CANADA PW120	17	34	4	3	31.8 yr
P&W CANADA PW121	14	28	4	6	33 yr
P&W CANADA PW127M	19	38	1	6	12.9 yr
P&W CANADA PW127E	1	2	1	1	19 yr
P & W 127	3	6	0	0	—
P&W CANADA PW124	2	4	0	0	—
P&W CANADA PW127F	2	4	0	2	18.5 yr

FAA registry data, US-registered aircraft only. Counts reflect the engine model as registered — generic “series” rows coexist with thrust-variant rows, so per-variant figures are partial. Retired = domestic deregistrations (a teardown proxy, not a confirmed part-out); exported aircraft left the US fleet intact. Active tails span every family the engine flies on, not just this one.

Maintenance economics(US carriers, through 2025)

ATR family — BTS Form 41 filings

Direct maintenance per block hour

$178fleet avg

Airframe / engine split

$171/$7

Reporting carriers

BTS Form 41 data (Schedule P-5.2 maintenance expense over T-2 block hours), Group III US carriers only — filers above $1B annual revenue; smaller US operators, Part 135, and all non-US carriers are not in this data. Dollars are accrual-basis from regulatory filings (reserves and depreciation included), so they benchmark fleet economics and do not track to individual repair events. Averages are block-hour- weighted across every reporting carrier; the range spans per-carrier rates after excluding marginal reporting slices, and small carrier counts are noisy.

Airworthiness Directive activity

FAA / EASA public regulatory data

52airworthiness directives affecting this fleet — recurring compliance demand for the parts and shops that serve it

Most recent

EASA AD 2025-0103effective May 19, 2025Mixed actions
EASA Safety Publications Tool
EASA AD 2025-0087effective Apr 30, 2025Mixed actions
EASA Safety Publications Tool
EASA AD 2025-0080effective Apr 25, 2025Mixed actions
EASA Safety Publications Tool
EASA AD 2025-0045effective Mar 5, 2025Mixed actions
EASA Safety Publications Tool
EASA AD 2025-0044effective Mar 5, 2025Mixed actions
EASA Safety Publications Tool

Directives linked to this airframe family in the FAA / EASA regulatory corpus we have processed — not a complete historical AD list. An AD is a compliance requirement that drives scheduled work (inspections, replacements, modifications) across the fleet; inspection directives are not replacement directives, and none of this is a prediction that any part will fail.