Parts · Engine

Eec

491 failure reports named the eec in the last ten years, 1,093 since 1995, most often on the Boeing 737; the condition most often found was "faulted". 1 FAA approvals let 1 company make a replacement eec, United Technologies, Hamilton Sundstrand holding the most (1).

Reports by year

Reports by year, as a table

	reports
1995	16
1996	19
1997	14
1998	19
1999	10
2000	18
2001	24
2002	16
2003	20
2004	16
2005	23
2006	19
2007	26
2008	41
2009	53
2010	35
2011	39
2012	49
2013	44
2014	55
2015	46
2016	44
2017	49
2018	36
2019	73
2020	38
2021	50
2022	54
2023	65
2024	28
2025	30
2026	24

Which system the reports file it under last ten years

Engine487Instruments and avionics1Flight controls1Airframe structure1Heating, ice protection and utility systems1

Reports by system, as a table

	reports
Engine	487
Instruments and avionics	1
Flight controls	1
Airframe structure	1
Heating, ice protection and utility systems	1

Models most often reporting it last ten years

Boeing 737222Boeing 76776Airbus A32154Boeing 75731Airbus A33017Airbus A32014Boeing 71713Airbus A31911Airbus A3009Cessna 560 Citation V, Ultra, Encore and Excel7Boeing 7775Airbus A3504

Models most reported, as a table

	reports
Boeing 737	222
Boeing 767	76
Airbus A321	54
Boeing 757	31
Airbus A330	17
Airbus A320	14
Boeing 717	13
Airbus A319	11
Airbus A300	9
Cessna 560 Citation V, Ultra, Encore and Excel	7
Boeing 777	5
Airbus A350	4

How it failed the condition found, last ten years

faulted119failed107faulty104malfunctioned72inoperative23defective19unknown9warning message7intermittent5false indication4

Conditions found, as a table

	reports
faulted	119
failed	107
faulty	104
malfunctioned	72
inoperative	23
defective	19
unknown	9
warning message	7
intermittent	5
false indication	4

Engines most often reporting it

CFM International CFM56-7B27 57 CFM International CFM56-7B27E 55 General Electric CF6-80C2B6F 23 International Aero Engines V2533-A5 19 Rolls-Royce RB-211 series 19 Pratt & Whitney PW2037 18 International Aero Engines PW1133GA-JM 17 CFM International CFM56-7B27/B3 11 International Aero Engines V2527-A5 11 Pratt & Whitney PW4060 11

Approved replacement parts 1 parts manufacturer approvals

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

United Technologies, Hamilton Sundstrand 1

Maker	Part	Replaces	Fits	Granted	Status
United Technologies, Hamilton Sundstrand	EEC 33B7751-03	33B7751-03	Pratt & Whitney Canada Corp.	2023-01-17	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.