ATR ATR 72

1,122 parts applicable to this airframe — turboprop

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
1031309111	LIGHT	—	ATR 42-300 ATR 42+1	33	Electromechanical	PMA
1155551	LENS	—	ATR 72	33	Consumables / Hardware	PMA
3011160NEC	LIGHT	—	ATR 72	33	Electromechanical	PMA
30130000	BATTERY PACK	—	ATR 72	33	Electromechanical	OEM
3013001	BATTERY PACK	—	ATR 72	33	Electromechanical	OEM
311434901	SEAL	—	ATR 72	72	Consumables / Hardware	OEM
397391	MODULE	—	ATR 72	32	unknown
559012B	STATIC INVERTER	Thales	ATR 42-300 ATR 42+1	24	Electromechanical	OEM
56785598010	INDICATOR	AEROSP	ATR 72	77	Instruments	OEM
70017557	FUSE	—	ATR 72	33	unknown	OEM
C245890002	UPLOCK SWITCH	MESSIER	ATR 42-300 ATR 42+1	32	Electromechanical	OEM
CG7GO10	SMOKE DETECTOR	—	A310 ATR 72	26	Safety / Emergency	PMA
CM44	LIGHT	—	A320 A320-200+2	33	Electromechanical	OEM
D226981722	SHOCK ABSORBER	—	ATR 72	32	unknown	OEM
E0344R0110	COVER	—	ATR 72	33	unknown
ED34A110	CONTROL UNIT	—	ATR 42 ATR 72	31	Avionics / Electronics	PMA
EO24428A0	RELAY	—	ATR 42-300 ATR 42+1	32	Electromechanical	OEM
EVTA1925B	FAN	—	ATR 42-500 ATR 42+1	21	Environmental / Cabin	PMA
FE205000	DAMPENER	—	ATR 72	27	unknown	OEM
GA63717	BRACKET	—	ATR 72	32	unknown
L5050C	HANDLE	—	ATR 72	32	unknown
LD1670	BULB	—	ATR 72	33	unknown	OEM
LH61511155561	SOCKET	—	ATR 72	33	unknown
LP1760	BULB	—	ATR 72	33	Electromechanical	PMA
NAS6028	RETAINER	—	ATR 72	52	Consumables / Hardware
P2070007001	FLASHLIGHT	—	ATR 72	25	Safety / Emergency	PMA
S5237630120405	SKIN	—	ATR 72	52	Structures	PMA
S5317210122205	SKIN	—	767-300 ATR 72	53	Structures	OEM
S5317214920001	FRAME	—	767-300 ATR 72	53	Structures	PMA
S53172201121005	SKIN	—	767-300 ATR 72	53	Structures	PMA
S5317220121405	SKIN	—	767-300 ATR 72	53	Structures	PMA
S5317220420001	FRAME	—	767-300 ATR 72	53	Structures	OEM
S53172210200	FLOORBEAM	AEROSP	767-300 ATR 42-300+2	53	Structures	OEM
S5317221920401	FRAME	—	767-300 ATR 72	53	Structures	PMA
S5317222020100	FRAME	—	767-300 ATR 72	53	Structures	OEM
S5317222420801	INTERCOSTAL	—	767-300 ATR 72	53	Structures	PMA
S5317222421001	INTERCOSTAL	—	767-300 ATR 72	53	unknown	OEM
S5317222421201	INTERCOSTAL	—	767-300 ATR 72	53	Structures	PMA
S5317222421401	INTERCOSTAL	—	767-300 ATR 72	53	Structures	PMA
S5317222520001	INTERCOSTAL	—	767-300 ATR 72	53	unknown	OEM
S536712557002	STRINGER	—	767-300 ATR 72	53	Structures	OEM
S5367125725401	CLIP	—	767-300 ATR 72	53	Consumables / Hardware	PMA
S53671300292	STRINGER	AEROSP	767-300 ATR 42-300+2	53	Structures	OEM
S536720500605	SKIN	—	767-300 ATR 72	53	Structures	OEM
S5367240420601	FLOORBEAM	—	767-300 ATR 42-300+2	53	Structures	PMA
S53672405226	FLOORBEAM	—	767-300 ATR 72	53	Structures	PMA
S53678000211451	FLOOR SUPPORT	—	767-300 ATR 72	53	Structures	OEM
S5367800021401	FLOOR SUPPORT	—	767-300 ATR 72	53	Structures	PMA
S5367800826802	FLOOR SUPPORT	—	767-300 ATR 72	53	Structures	PMA
S5751211120500	GUIDE	—	ATR 72	57	unknown

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.