The component layer · parts · FAA feed as of October 13, 2026

Parts

Two public FAA records meet here. The failure reports that airlines and repair shops file say which part failed, on what aircraft, and how (worn, cracked, leaking); the words they use are brought to one plain name, so "BRAKE ASSY", "Brake Assembly" and "brake" are one part. The parts manufacturer approvals say which companies may make a replacement part of that name for which models. 1,227,278 approvals held by 3,185 companies, 1,227,228 of them current. Click a part for its page; a part makers list is beside it.

Approved replacement parts by system 1,227,278 approvals

Approved parts by system, as a table

	approvals
Other and general	843,094
Cabin, seats and restraints	184,224
Airframe structure	55,196
Engine	44,658
Electrical power	40,411
Instruments and avionics	14,631
Flight controls	13,152
Landing gear	10,784
Heating, ice protection and utility systems	7,627
Emergency equipment	5,492
Propeller	2,667
Fuel system	2,663
Rotorcraft systems	2,061
Electric propulsion	618

Approvals granted by year

Approvals by year, as a table

	approvals
1990	1,112
1991	4,260
1992	11,202
1993	8,753
1994	8,945
1995	11,371
1996	10,536
1997	18,003
1998	20,081
1999	18,991
2000	21,483
2001	30,752
2002	14,589
2003	37,407
2004	24,859
2005	76,711
2006	48,067
2007	36,034
2008	37,630
2009	57,789
2010	48,738
2011	63,745
2012	74,881
2013	64,140
2014	45,366
2015	100,038
2016	50,349
2017	24,220
2018	36,125
2019	36,555
2020	23,146
2021	28,183
2022	27,634
2023	19,441
2024	14,062
2025	54,071
2026	11,539

Models with the most approved replacement parts

Boeing 737 170,491 Boeing 777 150,018 Boeing 747 139,984 Boeing 767 94,577 Boeing 757 79,216 Airbus A330 57,903 Airbus A320 36,556 Airbus A340 34,582 Airbus A321 31,770 Boeing 727 30,081 Boeing 787 Dreamliner 29,394 Airbus A319 27,080 Airbus A300 24,786 Bombardier CL-600 Challenger and CRJ 21,226 Mcdonnell Douglas DC-9 15,421

Part	Reports since 1995	Approved replacements	Makers
Draw Bolt	4	2	2
Drive Disc	4
Drive Mechanism	4
Dry Air	4	181	5
Duct Light	4
Eccentric	4	6	2
Eel Cover	4
Eel Pin	4
Egt Resistor	4
Ejector Duct	4
Elac	4
Elect Contl	4
Elect Eng	4
Elevator Asy	4
Emerg Evac	4
End Rib	4	14	5
Epr Syst	4
Evacuation Slide	4	7	3
Exit	4	55	3
Exit Door	4	14	1
Explosive Link	4
Fadac	4
Fan Air	4	27	5
Fan Frame	4
Fan Motor	4	4	4
Feather System	4
Ffr	4
Fiber Optic	4	71	5
Field	4
Fillet Panel	4
Fire Bottles	4
Fire Cntrl	4
Fire Connector	4
Fire Ext	4	6	4
Fire Panel	4	14	2
Fixed Vane	4
Flame Detector	4
Flap Attach	4
Flap Handle	4	10	4
Flight Control	4	98	18
Float Bracket	4
Floorbeam Strap	4
Flr Support	4
Flt Contl	4
Flush Motor	4
Flying Door	4
Force Limiter	4	3	2
Former Ring	4
Frame Cap	4
Fuel Regulator	4	11	2
Fuel Sender	4	1	1
Fuel Syst	4
Fuses	4
Gear Pin	4
Gear Pins	4
Gear Planetary	4	1	1
Gears	4	13	6
Gooseneck	4	12	2
Gps System	4
Gpws Computer	4
Grd Shift	4
Ground	4	6	4
Ground Sense	4
Guide Pins	4
Guide Rail	4	66	5
Handle Casting	4
Hatch	4	7	1
Header Tank	4	13	3
Heat Manifold	4
Heat Mat	4
High Temp	4	1	1
Hinge Casting	4
Hinge Lug	4	5	3
Hinge Tab	4
Horizon	4
Horizon Gyro	4
Hot Section	4
Hourmeter	4	27	1
Hub Bushing	4	6	1
Hyd Sys	4
Idlercrank Brg	4
Igniter Lead	4	42	3
Igniter Post	4
Igv	4
Inboard Web	4
Indicicator	4
Input Rod	4
Inserts	4
Intake Screen	4
Interconnect	4	4	3
Internal Sump	4
Isolation Mt	4
Itt Trimmer	4
Jamb Doubler	4
Jo Bolt	4
Lap Seam	4
Latch Cable	4
Latch Fitting	4	105	7
Latch Fittings	4
Latch Rod	4

Sources: the FAA's service difficulty reports (1995 to date; the part name as the reporter wrote it, reduced to its first plain words) and the FAA's parts manufacturer approvals from the Dynamic Regulatory System. A report counts a part that failed and was fixed; it does not say how many of that part are flying, so a common part on a big fleet is reported more. "Unknown" and blank names are left out.