The component layer · parts · FAA feed as of October 12, 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	Mostly in	Reports, 10 years	Reports since 1995	Approved replacements	Makers
Skin	Airframe structure	34,026	128,509	1,992	34
Seat Track	Airframe structure	21,983	59,864	874	53
Floor Panel	Airframe structure	21,898	37,710	19,723	37
Light	Electrical power	18,389	67,293	1,271	53
Battery Pack	Electrical power	17,673	41,449	181	16
Floor Support	Airframe structure	16,007	32,908	19	6
Frame	Airframe structure	14,972	60,927	609	70
Angle	Airframe structure	14,215	30,381	3,167	138
Floorbeam	Airframe structure	12,441	40,360
Battery	Electrical power	11,990	27,691	720	33
Intercostal	Airframe structure	10,312	20,397	939	57
Fitting	Airframe structure	10,191	30,226	3,028	186
Stringer	Airframe structure	9,857	25,869	359	17
Lens	Electrical power	8,315	19,060	2,227	75
Support	Airframe structure	7,372	15,406	2,207	174
Bottle	Airframe structure	7,301	9,209	24	5
Web	Airframe structure	7,137	18,739	389	33
Bracket	Airframe structure	6,791	14,242	8,713	368
Slide	Cabin, seats and restraints	6,586	16,694	185	38
Power Supply	Electrical power	6,517	14,505	358	60
Rib	Airframe structure	6,188	15,987	418	30
Panel	Airframe structure	6,171	14,423	9,719	208
Shear Tie	Airframe structure	5,893	15,118	233	13
Door	Airframe structure	5,666	11,202	1,635	113
Doubler	Airframe structure	5,496	12,166	1,497	153
Lamp	Electrical power	4,852	13,472	222	34
Flashlight	Cabin, seats and restraints	4,730	7,758	3	3
Hinge Fitting	Airframe structure	4,597	6,174	275	13
Warning Message	Heating, ice protection and utility systems	4,452	6,579
Cover	Electrical power	4,187	10,855	3,548	281
Plate	Airframe structure	4,157	6,760	3,284	301
Sign	Electrical power	4,111	8,138	455	15
Connector	Electrical power	4,000	17,169	4,782	134
Door Sill	Airframe structure	3,999	4,779	13	5
Stiffener	Airframe structure	3,942	8,734	845	73
Support Angle	Airframe structure	3,926	6,304	161	27
Girt Bar	Cabin, seats and restraints	3,841	5,153	28	7
Strap	Airframe structure	3,779	7,560	2,721	148
Beam	Airframe structure	3,452	8,815	343	40
Seal	Airframe structure	3,413	8,074	15,432	326
Structure	Airframe structure	3,312	12,877	44	8
Engine	Engine	3,281	14,387	15	6
Handle	Airframe structure	3,199	5,653	385	74
Actuator	Flight controls	3,109	12,002	2,670	132
Wire	Electrical power	3,054	16,496	1,339	58
Gusset	Airframe structure	3,049	4,625	251	48
Channel	Airframe structure	3,020	6,677	1,065	93
Door Frame	Airframe structure	2,888	8,006	124	10
Access Panel	Airframe structure	2,863	5,279	224	28
Sensor	Heating, ice protection and utility systems	2,760	6,870	765	90
Shield	Airframe structure	2,717	3,020	484	83
Transition Panel	Airframe structure	2,702	3,037	24	6
Attach Angle	Airframe structure	2,681	5,051	35	9
Bulb	Electrical power	2,652	9,900	16	5
Scuff Plate	Airframe structure	2,650	2,807	181	19
Warning Light	Heating, ice protection and utility systems	2,537	7,387	7	4
Hinge	Airframe structure	2,407	6,095	1,261	99
Warning System	Heating, ice protection and utility systems	2,397	6,456	1	1
Switch	Electrical power	2,308	10,488	2,796	185
Cargo Track	Airframe structure	2,011	4,541	5	2
Floorboard	Airframe structure	2,007	7,616	21	2
Pump	Heating, ice protection and utility systems	1,989	6,835	860	84
Slat Track	Airframe structure	1,915	2,055
Bulkhead	Airframe structure	1,902	10,148	384	38
Indicator	Cabin, seats and restraints	1,853	8,346	1,299	80
Smoke Detector	Emergency equipment	1,852	5,239	203	25
Wire Harness	Electrical power	1,731	4,704	1,563	78
Support Bracket	Airframe structure	1,725	3,262	239	51
Valve	Heating, ice protection and utility systems	1,718	6,589	5,234	218
Cylinder	Airframe structure	1,676	4,569	1,675	69
Retainer	Airframe structure	1,667	2,848	2,350	206
Spar	Airframe structure	1,639	5,905	109	20
Controller	Heating, ice protection and utility systems	1,627	4,983	737	64
Charger	Electrical power	1,603	4,439	3	3
Fairing	Airframe structure	1,596	3,371	1,287	99
Bolt	Airframe structure	1,593	4,905	13,355	174
Apu	Engine	1,554	3,325	5	5
Shear Plate	Airframe structure	1,552	2,654	15	7
Longeron	Airframe structure	1,498	8,472	57	8
Megaphone	Cabin, seats and restraints	1,496	2,021	1	1
Skin Panel	Airframe structure	1,479	3,107	490	5
Stringer Clip	Airframe structure	1,470	11,776	136	15
Window	Airframe structure	1,432	4,006	1,639	59
Bulkhead Web	Airframe structure	1,422	2,229	10	1
Damper	Airframe structure	1,361	1,888	103	44
Cusp Web	Airframe structure	1,348	5,719
Control Unit	Landing gear	1,346	4,963	461	53
Crossbeam	Airframe structure	1,309	2,339
Fmc	Instruments and avionics	1,303	1,999	1	1
Baffle	Airframe structure	1,267	1,465	965	47
Window Frame	Airframe structure	1,265	2,560
Windshield	Airframe structure	1,240	4,313	746	32
Former	Airframe structure	1,217	1,902	25	6
Hinge Arm	Airframe structure	1,217	1,225	52	10
Latch	Airframe structure	1,210	2,575	2,121	115
Pin	Airframe structure	1,186	3,306	4,564	224
Not Reported	Airframe structure	1,163	1,179
Oxygen Mask	Emergency equipment	1,161	2,348	59	12
Pressure Switch	Engine	1,139	2,851	654	53
Bearing	Airframe structure	1,106	7,335	16,810	237

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.