Parts · Instruments and avionics

Adc

218 failure reports named the adc in the last ten years, 856 since 1995, most often on the Boeing 767; the condition most often found was "failed".

Reports by year

Reports by year, as a table

	reports
1995	14
1996	20
1997	13
1998	32
1999	22
2000	31
2001	44
2002	44
2003	32
2004	41
2005	54
2006	45
2007	25
2008	35
2009	30
2010	31
2011	30
2012	27
2013	29
2014	22
2015	17
2016	18
2017	27
2018	23
2019	39
2020	10
2021	24
2022	12
2023	12
2024	19
2025	15
2026	19

Which system the reports file it under last ten years

Instruments and avionics212Engine3Flight controls3

Reports by system, as a table

	reports
Instruments and avionics	212
Engine	3
Flight controls	3

Models most often reporting it last ten years

Boeing 76737Boeing 75735Bombardier CL-600 Challenger and CRJ34Airbus A30014Mcdonnell Douglas MD-1112Boeing 74711Boeing 73710Embraer EMB-145 ERJ 1456Aerospatiale/Aeritalia ATR 425Mcdonnell Douglas Aircraft Co MD 835Bombardier BD-100 Challenger 300 and 3504Sikorsky S-924

Models most reported, as a table

	reports
Boeing 767	37
Boeing 757	35
Bombardier CL-600 Challenger and CRJ	34
Airbus A300	14
Mcdonnell Douglas MD-11	12
Boeing 747	11
Boeing 737	10
Embraer EMB-145 ERJ 145	6
Aerospatiale/Aeritalia ATR 42	5
Mcdonnell Douglas Aircraft Co MD 83	5
Bombardier BD-100 Challenger 300 and 350	4
Sikorsky S-92	4

How it failed the condition found, last ten years

failed72malfunctioned45faulted34inoperative21faulty13defective9unreliable7intermittent2unknown2unserviceable2

Conditions found, as a table

	reports
failed	72
malfunctioned	45
faulted	34
inoperative	21
faulty	13
defective	9
unreliable	7
intermittent	2
unknown	2
unserviceable	2

Engines most often reporting it

General Electric CF6-80C2B6F 2CFM International CFM56 series 1Continental O-200 1General Electric CF34-3B 1General Electric CF34-8C5 1General Electric CF6-80C2B1F 1Pratt & Whitney Canada PW150A 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.