Epsu

814 failure reports named the epsu in the last ten years, 1,287 since 1996, most often on the Airbus A320; the condition most often found was "failed". 1 FAA approvals let 1 company make a replacement epsu, Safran Cabin INC. holding the most (1).

Reports by year

Reports by year, as a table

	reports
1996	3
1997	1
1999	1
2003	2
2004	38
2005	47
2006	43
2007	39
2008	33
2009	36
2010	41
2011	76
2012	45
2013	23
2014	18
2015	27
2016	29
2017	26
2018	54
2019	39
2020	65
2021	107
2022	181
2023	149
2024	59
2025	54
2026	51

Which system the reports file it under last ten years

Electrical power803Cabin, seats and restraints7Airframe structure2Instruments and avionics1Emergency equipment1

Reports by system, as a table

	reports
Electrical power	803
Cabin, seats and restraints	7
Airframe structure	2
Instruments and avionics	1
Emergency equipment	1

Models most often reporting it last ten years

Models most reported, as a table

	reports
Airbus A320	487
Airbus A319	206
Airbus A321	72
Airbus A330	17
Airbus A300	9
Bombardier CL-600 Challenger and CRJ	8
Boeing 737	5
Boeing 747	3
Embraer ERJ 170 E170 and E175	2
Beechcraft 35 Bonanza and Debonair	1
Boeing 757	1
Boeing 777	1

How it failed the condition found, last ten years

failed212no test168unknown110inoperative96none87faulted46failed insp35faulty30dirty3discharged3

Conditions found, as a table

	reports
failed	212
no test	168
unknown	110
inoperative	96
none	87
faulted	46
failed insp	35
faulty	30
dirty	3
discharged	3

Engines most often reporting it

International Aero Engines V2522-A5 3 International Aero Engines V2527-A5 1

Approved replacement parts 1 parts manufacturer approvals

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

Safran Cabin INC. 1

For these models most: Airbus Canada Ltd Ptnrsp BD-500 (1).

Maker	Part	Replaces	Fits	Granted	Status
Safran Cabin INC.	Epsu 1005-200-001	1005-200-001	Airbus Canada... BD-500-1A10	2025-08-18	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.