Parts · Instruments and avionics

Warning Flag

40 failure reports named the warning flag in the last ten years, 58 since 2004, most often on the Boeing 737; the condition most often found was "false activation".

Reports by year

Reports by year, as a table

	reports
2004	1
2005	1
2006	1
2009	1
2012	1
2013	1
2014	5
2015	7
2016	20
2017	5
2018	2
2019	3
2020	1
2021	3
2022	3
2023	1
2025	1
2026	1

Which system the reports file it under last ten years

Instruments and avionics28Flight controls10Engine1Airframe structure1

Reports by system, as a table

	reports
Instruments and avionics	28
Flight controls	10
Engine	1
Airframe structure	1

Models most often reporting it last ten years

Boeing 73733Boeing 7674Bombardier CL-600 Challenger and CRJ1Cessna 750 Citation X1Learjet 451

Models most reported, as a table

	reports
Boeing 737	33
Boeing 767	4
Bombardier CL-600 Challenger and CRJ	1
Cessna 750 Citation X	1
Learjet 45	1

How it failed the condition found, last ten years

false activation30activated4false indication4illuminated1loose1

Conditions found, as a table

	reports
false activation	30
activated	4
false indication	4
illuminated	1
loose	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.