Parts · Engine

Fcu

181 failure reports named the fcu in the last ten years, 965 since 1995, most often on the Airbus A321; the condition most often found was "failed".

Reports by year

Reports by year, as a table

	reports
1995	24
1996	34
1997	24
1998	51
1999	56
2000	52
2001	64
2002	31
2003	25
2004	39
2005	64
2006	42
2007	37
2008	28
2009	36
2010	32
2011	37
2012	23
2013	40
2014	21
2015	24
2016	20
2017	12
2018	21
2019	23
2020	15
2021	10
2022	20
2023	7
2024	21
2025	11
2026	21

Which system the reports file it under last ten years

Engine109Flight controls59Fuel system7Instruments and avionics4Heating, ice protection and utility systems2

Reports by system, as a table

	reports
Engine	109
Flight controls	59
Fuel system	7
Instruments and avionics	4
Heating, ice protection and utility systems	2

Models most often reporting it last ten years

Airbus A32135Boeing 73725Airbus A32017Airbus A31916Beechcraft B300 King Air 35013Airbus A33010Boeing 75710Embraer EMB-145 ERJ 1457Bombardier CL-600 Challenger and CRJ6Embraer EMB-505 Phenom 3004Aerospatiale AS3503Airbus A3002

Models most reported, as a table

	reports
Airbus A321	35
Boeing 737	25
Airbus A320	17
Airbus A319	16
Beechcraft B300 King Air 350	13
Airbus A330	10
Boeing 757	10
Embraer EMB-145 ERJ 145	7
Bombardier CL-600 Challenger and CRJ	6
Embraer EMB-505 Phenom 300	4
Aerospatiale AS350	3
Airbus A300	2

How it failed the condition found, last ten years

failed41faulted23malfunctioned23leaking21faulty19defective13inoperative7fault message4none3fluctuates2

Conditions found, as a table

	reports
failed	41
faulted	23
malfunctioned	23
leaking	21
faulty	19
defective	13
inoperative	7
fault message	4
none	3
fluctuates	2

Engines most often reporting it

Pratt & Whitney PT6A series 20Pratt & Whitney PW2037 7Turbomeca (Safran) ARRIEL 1D1 3CFM International CFM56 series 2Pratt & Whitney JT8D-219 2Pratt & Whitney PW2040 2AlliedSignal (Honeywell) TPE331-12UHR 1Allison (Rolls-Royce) AE 3007A 1CFM International CFM56-5B4/3 1Garrett (Honeywell) TFE731-2 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.