Parts · Heating, ice protection and utility systems

Warning Message

4,473 failure reports named the warning message in the last ten years, 6,600 since 2005, most often on the Boeing 767; the condition most often found was "false activation".

Reports by year

Reports by year, as a table

	reports
2005	13
2006	328
2007	104
2008	79
2009	64
2010	38
2011	92
2012	141
2013	306
2014	501
2015	461
2016	333
2017	508
2018	528
2019	581
2020	489
2021	547
2022	177
2023	47
2024	472
2025	455
2026	336

Which system the reports file it under last ten years

Heating, ice protection and utility systems1,042Instruments and avionics889Engine527Airframe structure525Landing gear450Flight controls434Emergency equipment224Fuel system222Electrical power120Cabin, seats and restraints37

Reports by system, as a table

	reports
Heating, ice protection and utility systems	1,042
Instruments and avionics	889
Engine	527
Airframe structure	525
Landing gear	450
Flight controls	434
Emergency equipment	224
Fuel system	222
Electrical power	120
Cabin, seats and restraints	37

Models most often reporting it last ten years

Boeing 7671,370Boeing 737568Bombardier CL-600 Challenger and CRJ535Airbus A321324Embraer EMB-145 ERJ 145206Embraer ERJ 170 E170 and E175190Boeing 757164Airbus A330148Airbus A320137Airbus A319125Boeing 74789Boeing 77768

Models most reported, as a table

	reports
Boeing 767	1,370
Boeing 737	568
Bombardier CL-600 Challenger and CRJ	535
Airbus A321	324
Embraer EMB-145 ERJ 145	206
Embraer ERJ 170 E170 and E175	190
Boeing 757	164
Airbus A330	148
Airbus A320	137
Airbus A319	125
Boeing 747	89
Boeing 777	68

How it failed the condition found, last ten years

false activation2,856illuminated1,167false indication241activated96intermittent37multiple fail34unknown8no indication6malfunctioned5abnormal3

Conditions found, as a table

	reports
false activation	2,856
illuminated	1,167
false indication	241
activated	96
intermittent	37
multiple fail	34
unknown	8
no indication	6
malfunctioned	5
abnormal	3

Engines most often reporting it

General Electric CF6-80C2B6F 56General Electric CF6-80C2B7F 34CFM International CFM56-7B27 24CFM International LEAP-1A33 23Rolls-Royce RB-211 series 18General Electric CF6-80C2B6 10General Electric CF34-3B1 9International Aero Engines PW1133GA-JM 9Pratt & Whitney PW4060 9CFM International CFM56 series 8

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.