ATR ATR 72

1,122 parts applicable to this airframe — turboprop

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
16566	BATTERY	—	ATR 72	24	unknown
22051204	COOLING TURBINE	Honeywell	ATR 42-500 ATR 42+1	21	Environmental / Cabin	OEM
23061	SEAL	—	ATR 72	36	Consumables / Hardware	PMA
3023000	POWER SUPPLY	—	ATR 72	33	unknown
3034508	OIL FILTER	—	ATR 72	72	Consumables / Hardware	PMA
32051204	COOLING TURBINE	—	ATR 72	21	Engine Accessories	PMA
3975602	PANEL	—	ATR 72	34	unknown
5595C056	DUCT ASSY	—	ATR 72	21	Consumables / Hardware	PMA
6411344	SWITCH	—	ATR 42-300 ATR 42+1	21	Electromechanical	OEM
7003652602	ADU	—	ATR 72	34	unknown
8E500556800	PSU	—	ATR 72	25	Interior / Furnishings	PMA
8ES0055800	TRANSFORMER	—	ATR 72	33	Electromechanical	PMA
9799901	TEMP CONTL VLV	AEROSP	Embraer EMB-120 Brasilia ATR 72	21	Environmental / Cabin	OEM
ASN21414005	SEAL	—	ATR 72	36	Consumables / Hardware	PMA
BA202825	BELLOWS	—	ATR 72	21	unknown
D231970000	WIRE HARNESS	—	ATR 72	24	Avionics / Electronics	PMA
E0062B1A4AC0A	CONTROL SWITCH	—	ATR 42-500 ATR 42+1	33	Electromechanical	PMA
EO218UXU120A	RELAY	—	ATR 72	33	Electromechanical	PMA
EU24628A0	RELAY	—	ATR 72	33	Electromechanical	PMA
FR3123	SMOKE DETECTOR	—	ATR 72	26	Safety / Emergency	PMA
OL6839BPE	LIGHT	—	CRJ-200 Dash 8-400+6	33	Electromechanical	PMA
S5217600101200	STRUCTURE	AEROSP	ATR 42 ATR 72	52	Structures	OEM
S52176204402	FLOOR PAN	—	ATR 72	53	unknown
S52376110214	DOOR FRAME	AEROSP	ATR 42-300 ATR 42+1	52	Structures	OEM
S526724062081	FLOORBEAM	—	ATR 72	53	unknown
S5267240725201	FLOORBEAM	—	ATR 72	53	unknown
S53070308200	CARGO TRACK	AEROSP	ATR 42-300 ATR 42-500+2	53	Interior / Furnishings	OEM
S53172206258	FLOORBEAM	AEROSP	767-300 ATR 42-300+2	53	Structures	OEM
S5317220820001	FRAME	—	767-300 ATR 42+1	53	Structures	PMA
S53174000200	PRESSURE BLKHD	AEROSP	767-300 ATR 42-300+3	53	Structures
S5337241123402	FLOORBEAM	—	ATR 42-300 ATR 42+1	53	unknown
S53570201204	SEAT TRACKS	AEROSP	ATR 42-300 ATR 42+1	53	Interior / Furnishings	OEM
S53670600820002	ZEE	—	767-300 ATR 72	53	unknown
S5367120500605	SKIN	—	767-300 ATR 72	53	Structures	PMA
S5367121720001	WEB	—	767-300 ATR 72	53	unknown
S5367121729802	SILL	—	767-300 ATR 72	53	unknown
S5367121737400	SILL	—	767-300 ATR 72	53	unknown
S5367140003405	SKIN	—	767-300 ATR 72	53	Structures	PMA
S5367240102061	FLOORBEAM	—	767-300 ATR 72	53	unknown
S5367240301861	FLOORBEAM	—	767-300 ATR 72	53	unknown
S5367240500661	FLOORBEAM	—	767-300 ATR 72	53	unknown
S53672408200	FRAME	AEROSP	767-300 ATR 42-300+2	53	Structures	OEM
S53678001250	SEAT TRACK	AEROSP	767-300 ATR 42-500+2	53	Interior / Furnishings	OEM
S536780082002	ZEE	—	767-300 ATR 72	52	Structures	PMA
S53678008201	SUPPORT	—	767-300 ATR 72	53	unknown
S53680021602	FLOORBEAM	—	767-300 ATR 72	53	unknown
S53872501200	SKIN	AEROSP	ATR 42 ATR 72	53	Structures	OEM
S5751204920400	CAM GUIDE	—	ATR 72	57	unknown
S5751211020400	CAM GUIDE	—	ATR 72	57	unknown
ST3086110	O RING	—	Dash 8-400 Dash 8+1	77	Consumables / Hardware	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.