Parts · Flight controls

Electronic Unit

147 failure reports named the electronic unit in the last ten years, 392 since 1996, most often on the Boeing 737; the condition most often found was "failed".

Reports by year

Reports by year, as a table

	reports
1996	3
1997	5
1998	2
1999	1
2000	1
2005	1
2006	12
2007	25
2008	24
2009	30
2010	16
2011	53
2012	18
2013	21
2014	14
2015	19
2016	11
2017	13
2018	20
2019	18
2020	11
2021	12
2022	5
2023	13
2024	26
2025	11
2026	7

Which system the reports file it under last ten years

Flight controls64Landing gear44Instruments and avionics14Emergency equipment8Engine6Airframe structure4Electrical power3Heating, ice protection and utility systems3Propeller1

Reports by system, as a table

	reports
Flight controls	64
Landing gear	44
Instruments and avionics	14
Emergency equipment	8
Engine	6
Airframe structure	4
Electrical power	3
Heating, ice protection and utility systems	3
Propeller	1

Models most often reporting it last ten years

Boeing 73737Embraer EMB-145 ERJ 14532Embraer EMB-505 Phenom 30024Boeing 76711Bombardier CL-600 Challenger and CRJ6Embraer EMB-135 ERJ 135 and Legacy6Boeing 7574Airbus A3003Bombardier BD-100 Challenger 300 and 3503Saab-Fairchild 3403Airbus BD-5002Gulfstream G-IV Gulfstream IV2

Models most reported, as a table

	reports
Boeing 737	37
Embraer EMB-145 ERJ 145	32
Embraer EMB-505 Phenom 300	24
Boeing 767	11
Bombardier CL-600 Challenger and CRJ	6
Embraer EMB-135 ERJ 135 and Legacy	6
Boeing 757	4
Airbus A300	3
Bombardier BD-100 Challenger 300 and 350	3
Saab-Fairchild 340	3
Airbus BD-500	2
Gulfstream G-IV Gulfstream IV	2

How it failed the condition found, last ten years

failed42faulty25faulted23malfunctioned21inoperative10unserviceable7defective3intermittent3abnormal2false indication2

Conditions found, as a table

	reports
failed	42
faulty	25
faulted	23
malfunctioned	21
inoperative	10
unserviceable	7
defective	3
intermittent	3
abnormal	2
false indication	2

Engines most often reporting it

General Electric CT7-9B 2General Electric CF6-80A2 1International Aero Engines PW1133GA-JM 1International Aero Engines V2524-A5 1Rolls-Royce AE 3007A1/3 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.