Parts · Heating, ice protection and utility systems

Acm

806 failure reports named the acm in the last ten years, 2,449 since 1995, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "failed". 6 FAA approvals let 3 companies make a replacement acm, Honeywell International US LLC holding the most (3).

Reports by year

Reports by year, as a table

	reports
1995	25
1996	43
1997	42
1998	32
1999	56
2000	51
2001	48
2002	61
2003	48
2004	58
2005	87
2006	94
2007	93
2008	103
2009	73
2010	103
2011	151
2012	106
2013	134
2014	121
2015	114
2016	98
2017	79
2018	77
2019	122
2020	45
2021	55
2022	43
2023	61
2024	82
2025	70
2026	74

Which system the reports file it under last ten years

Heating, ice protection and utility systems803Engine3

Reports by system, as a table

	reports
Heating, ice protection and utility systems	803
Engine	3

Models most often reporting it last ten years

Bombardier CL-600 Challenger and CRJ162Boeing 737133Embraer EMB-145 ERJ 145128Bombardier BD-100 Challenger 300 and 35057Boeing 76732Boeing 787 Dreamliner30Boeing 75727Embraer ERJ 190 E190 and E19526Embraer ERJ 170 E170 and E17524Boeing 77722Embraer EMB-135 ERJ 135 and Legacy21Airbus A33017

Models most reported, as a table

	reports
Bombardier CL-600 Challenger and CRJ	162
Boeing 737	133
Embraer EMB-145 ERJ 145	128
Bombardier BD-100 Challenger 300 and 350	57
Boeing 767	32
Boeing 787 Dreamliner	30
Boeing 757	27
Embraer ERJ 190 E190 and E195	26
Embraer ERJ 170 E170 and E175	24
Boeing 777	22
Embraer EMB-135 ERJ 135 and Legacy	21
Airbus A330	17

How it failed the condition found, last ten years

failed185seized148odor84smoke65inoperative49faulted43malfunctioned39damaged35faulty33defective21

Conditions found, as a table

	reports
failed	185
seized	148
odor	84
smoke	65
inoperative	49
faulted	43
malfunctioned	39
damaged	35
faulty	33
defective	21

Engines most often reporting it

Rolls-Royce RB-211 series 4General Electric CF34-10E6 2General Electric CT7-9B 2Pratt & Whitney Canada PW150A 2CFM International CFM56-7B27 1CFM International CFM56 series 1Garrett (Honeywell) TFE731-3C 1General Electric CF34-3B1 1General Electric CFM56 series 1General Electric CT7 series 1

Approved replacement parts 6 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a acm and sell it as an approved part for the models named. These are the companies holding such approvals for a acm:

Honeywell International US LLC 3Honeywell International INC. Honeywell Aerospace 2Carlisle Interconnect Technologies DBA Electronic Cable Specialists 1

For these models most: Airbus A340 (4), Airbus A321 (1), Airbus A320 (1), Airbus A319 (1).

Maker	Part	Replaces	Fits	Granted	Status
Honeywell International INC. Honeywell Aerospace	ACM 2205430-1	2205430-1	Airbus A340-211, A340-311	2021-04-21	current
Honeywell International INC. Honeywell Aerospace	ACM 2205330-1	2205330-1	Airbus A340-211, A340-311	2021-04-21	current
Carlisle Interconnect Technologies DBA Electronic Cable Specialists	ACM 502-3050-01	Modification Part	Airbus A319 Series, A320 Series, A321 Series	2018-07-22	current
Honeywell International US LLC	ACM (Antenna Control Module) 4088470-901	4088470-901	GULFSTREAM G650	2012-10-11	current
Honeywell International US LLC	ACM 2205430-1	Airbus Industrie 2205430-1	Airbus A340-211, -311	1997-02-17	current
Honeywell International US LLC	ACM 2205330-1	Airbus Industrie 2205330-1	Airbus A340-211, -311	1997-02-17	current

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.