Parts · Airframe structure

Indication Sys

371 failure reports named the indication sys in the last ten years, 800 since 1996, most often on the Boeing 737; the condition most often found was "malfunctioned".

Reports by year

Reports by year, as a table

	reports
1996	1
1997	2
2003	1
2005	24
2006	31
2007	34
2008	38
2009	30
2010	28
2011	47
2012	52
2013	42
2014	55
2015	44
2016	34
2017	31
2018	40
2019	28
2020	25
2021	28
2022	3
2023	5
2024	54
2025	92
2026	31

Which system the reports file it under last ten years

Airframe structure108Fuel system78Engine58Landing gear36Instruments and avionics23Heating, ice protection and utility systems23Flight controls20Cabin, seats and restraints19Emergency equipment4Electrical power2

Reports by system, as a table

	reports
Airframe structure	108
Fuel system	78
Engine	58
Landing gear	36
Instruments and avionics	23
Heating, ice protection and utility systems	23
Flight controls	20
Cabin, seats and restraints	19
Emergency equipment	4
Electrical power	2

Models most often reporting it last ten years

Boeing 73788Boeing 76760Boeing 75726Airbus A30023Airbus A32123Airbus A32019Airbus A33014Airbus A31913Embraer EMB-145 ERJ 14513Bombardier CL-600 Challenger and CRJ11Boeing 7479Boeing 7779

Models most reported, as a table

	reports
Boeing 737	88
Boeing 767	60
Boeing 757	26
Airbus A300	23
Airbus A321	23
Airbus A320	19
Airbus A330	14
Airbus A319	13
Embraer EMB-145 ERJ 145	13
Bombardier CL-600 Challenger and CRJ	11
Boeing 747	9
Boeing 777	9

How it failed the condition found, last ten years

malfunctioned143faulted55false indication45inoperative22faulty15intermittent14unknown13false activation11failed7no test6

Conditions found, as a table

	reports
malfunctioned	143
faulted	55
false indication	45
inoperative	22
faulty	15
intermittent	14
unknown	13
false activation	11
failed	7
no test	6

Engines most often reporting it

General Electric CF6-80C2B6F 4CFM International CFM56-5B4/3 2International Aero Engines PW1133GA-JM 2International Aero Engines V2524-A5 2Pratt & Whitney PT6A series 2Allison (Rolls-Royce) 250-C20 series 1CFM International CFM56-7B27E 1CFM International CFM56 series 1CFM International LEAP-1B28 series 1Garrett (Honeywell) TPE331-11U 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.