Parts · Airframe structure

Deu

91 failure reports named the deu in the last ten years, 124 since 1996, most often on the Airbus A321; the condition most often found was "faulted".

Reports by year

Reports by year, as a table

	reports
1996	2
2004	2
2007	2
2008	3
2009	3
2010	2
2011	2
2012	5
2013	6
2014	3
2015	3
2016	4
2017	6
2019	6
2020	2
2021	3
2022	11
2023	15
2024	13
2025	16
2026	15

Which system the reports file it under last ten years

Airframe structure40Instruments and avionics18Electrical power13Cabin, seats and restraints11Emergency equipment5Engine2Heating, ice protection and utility systems2

Reports by system, as a table

	reports
Airframe structure	40
Instruments and avionics	18
Electrical power	13
Cabin, seats and restraints	11
Emergency equipment	5
Engine	2
Heating, ice protection and utility systems	2

Models most often reporting it last ten years

Airbus A32136Airbus A32017Airbus A31911Boeing 73711Airbus A3309Mcdonnell Douglas MD-115Airbus A3002

Models most reported, as a table

	reports
Airbus A321	36
Airbus A320	17
Airbus A319	11
Boeing 737	11
Airbus A330	9
Mcdonnell Douglas MD-11	5
Airbus A300	2

How it failed the condition found, last ten years

faulted26warning message12faulty11failed9false indication7fault message7defective4inoperative4malfunctioned3false activation2

Conditions found, as a table

	reports
faulted	26
warning message	12
faulty	11
failed	9
false indication	7
fault message	7
defective	4
inoperative	4
malfunctioned	3
false activation	2

Engines most often reporting it

CFM International CFM56-5B7 1General Electric CF6-80C2D1F 1International Aero Engines V2522-A5 1

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.