Fseu

184 failure reports named the fseu in the last ten years, 374 since 1995, most often on the Boeing 737; the condition most often found was "faulted". 4 FAA approvals let 1 company make a replacement fseu, Bae Systems Controls INC holding the most (4).

Reports by year

Reports by year, as a table

	reports
1995	1
1996	4
1997	5
1998	5
1999	2
2000	2
2001	10
2002	4
2003	8
2004	1
2005	3
2007	5
2008	13
2009	15
2010	21
2011	26
2012	16
2013	27
2014	7
2015	15
2016	15
2017	16
2018	19
2019	11
2020	13
2021	13
2022	23
2023	22
2024	13
2025	14
2026	25

Which system the reports file it under last ten years

Flight controls182Fuel system1Landing gear1

Reports by system, as a table

	reports
Flight controls	182
Fuel system	1
Landing gear	1

Models most often reporting it last ten years

Boeing 737102Boeing 75749Boeing 76725Boeing 7776Airbus A3191Airbus A3201

Models most reported, as a table

	reports
Boeing 737	102
Boeing 757	49
Boeing 767	25
Boeing 777	6
Airbus A319	1
Airbus A320	1

How it failed the condition found, last ten years

faulted48faulty47failed23malfunctioned20inoperative16defective5false indication4fault message4unknown4unserviceable3

Conditions found, as a table

	reports
faulted	48
faulty	47
failed	23
malfunctioned	20
inoperative	16
defective	5
false indication	4
fault message	4
unknown	4
unserviceable	3

Engines most often reporting it

CFM International CFM56-7B26/2 1

Approved replacement parts 4 parts manufacturer approvals

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

Bae Systems Controls INC 4

For these models most: Boeing 777 (4).

Maker	Part	Replaces	Fits	Granted	Status
Bae Systems Controls INC	FSEU 285W0023-3	285W0023-3	The Boeing Company 777-200 SERIES, 777-200LR SERIES,...	2010-06-06	current
Bae Systems Controls INC	FSEU 285W0023-3	285W0023-3	The Boeing Company 777-200 SERIES, 777-200LR SERIES,...	2010-05-16	current
Bae Systems Controls INC	FSEU 285W0023-3	285W0023-3	The Boeing Company 777-200 SERIES, 777-200LR SERIES,...	2009-11-24	current
Bae Systems Controls INC	FSEU 285W0023-3	285W0023-3	The Boeing Company 777-300ER SERIES, 777F SERIES	2009-10-26	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.