Parts · Airframe structure

Buttstrap

80 failure reports named the buttstrap in the last ten years, 476 since 1996, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "corroded". 8 FAA approvals let 4 companies make a replacement buttstrap, Gulfstream Aerospace Corporation holding the most (4).

Reports by year

Reports by year, as a table

	reports
1996	9
1997	25
1998	19
1999	5
2000	12
2001	9
2002	15
2003	72
2004	101
2005	13
2006	6
2007	13
2008	9
2009	16
2010	17
2011	17
2012	13
2013	8
2014	10
2015	7
2016	8
2017	11
2018	7
2019	9
2020	5
2021	9
2022	8
2023	2
2024	5
2025	11
2026	5

Which system the reports file it under last ten years

Airframe structure80

Reports by system, as a table

	reports
Airframe structure	80

Models most often reporting it last ten years

Bombardier CL-600 Challenger and CRJ48Airbus A32011Boeing 7374Embraer EMB-145 ERJ 1454Airbus A3003Airbus A3213Aerospatiale ATR 721Airbus A3191Boeing 7571Embraer ERJ 170 E170 and E1751

Models most reported, as a table

	reports
Bombardier CL-600 Challenger and CRJ	48
Airbus A320	11
Boeing 737	4
Embraer EMB-145 ERJ 145	4
Airbus A300	3
Airbus A321	3
Aerospatiale ATR 72	1
Airbus A319	1
Boeing 757	1
Embraer ERJ 170 E170 and E175	1

How it failed the condition found, last ten years

corroded73damaged3cracked2buckled1worn1

Conditions found, as a table

	reports
corroded	73
damaged	3
cracked	2
buckled	1
worn	1

Engines most often reporting it

International Aero Engines V2527-A5 1

Approved replacement parts 8 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a buttstrap and sell it as an approved part for the models named. These are the companies holding such approvals for a buttstrap:

Gulfstream Aerospace Corporation 4Gulfstream Aerospace LP 2Magellan Aerospace (Formerly Aeronca INC) 1Gemini Engineering 1

For these models most: Israel Aircraft Industries ASTRA SPX (6), Israel Aircraft Industries 1125 (6), Israel Aircraft Industries GULFSTREAM 100 (4), Boeing 737 (2).

Maker	Part	Replaces	Fits	Granted	Status
Gemini Engineering	BUTTSTRAP 314A1502-9	314A1502-9	Boeing 737-300 Series, 737-400 Series,...	2009-06-03	current
Gulfstream Aerospace Corporation	Buttstrap 25W357209-003	25W357209-003	Gulfstream Aerospace LP 1125 Westwind Astra, Astra SPX,...	2009-04-07	current
Gulfstream Aerospace Corporation	Buttstrap 25W357209-004	25W357209-004	Gulfstream Aerospace LP 1125 Westwind Astra, Astra SPX,...	2009-04-07	current
Magellan Aerospace (Formerly Aeronca INC)	BUTTSTRAP 314A1502-9	314A1502-9	Boeing 737-300 SERIES, 737-400 SERIES,...	2008-11-13	current
Gulfstream Aerospace Corporation	Buttstrap 25W357209-004	25W357209-004	Gulfstream Aerospace LP 1125 Westwind Astra, Astra SPX,...	2008-04-01	current
Gulfstream Aerospace Corporation	Buttstrap 25W357209-003	25W357209-003	Gulfstream Aerospace LP 1125 Westwind Astra, Astra SPX,...	2008-04-01	current
Gulfstream Aerospace LP	Buttstrap 25W357209-004	IAI 25W357209-004	Israel 1125 Westwind Astra, Astra SPX	2001-06-06	current
Gulfstream Aerospace LP	Buttstrap 25W357209-003	IAI 25W357209-003	Israel 1125 Westwind Astra, Astra SPX	2001-06-06	current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.