Parts · Airframe structure

Support Frame

277 failure reports named the support frame in the last ten years, 346 since 1998, most often on the Boeing 737; the condition most often found was "cracked". 6 FAA approvals let 3 companies make a replacement support frame, Fliegen Works INC holding the most (4).

Reports by year

Reports by year, as a table

	reports
1998	1
2008	2
2009	9
2010	6
2011	5
2012	7
2013	16
2014	9
2015	14
2016	33
2017	13
2018	24
2019	23
2020	16
2021	12
2022	20
2023	5
2024	34
2025	63
2026	34

Which system the reports file it under last ten years

Airframe structure276Engine1

Reports by system, as a table

	reports
Airframe structure	276
Engine	1

Models most often reporting it last ten years

Boeing 73752Airbus A32150Airbus A31944Airbus A32023Boeing 74718Mcdonnell Douglas MD-1115Airbus A30013Bombardier CL-600 Challenger and CRJ9Airbus Helicopters AS350 AStar (Écureuil), now H1255Boeing 7575Boeing 7675Embraer EMB-145 ERJ 1455

Models most reported, as a table

	reports
Boeing 737	52
Airbus A321	50
Airbus A319	44
Airbus A320	23
Boeing 747	18
Mcdonnell Douglas MD-11	15
Airbus A300	13
Bombardier CL-600 Challenger and CRJ	9
Airbus Helicopters AS350 AStar (Écureuil), now H125	5
Boeing 757	5
Boeing 767	5
Embraer EMB-145 ERJ 145	5

How it failed the condition found, last ten years

cracked85corroded81excess play69worn14chafed10damaged7gouged4broken3dented2bent1

Conditions found, as a table

	reports
cracked	85
corroded	81
excess play	69
worn	14
chafed	10
damaged	7
gouged	4
broken	3
dented	2
bent	1

Engines most often reporting it

Turbomeca (Safran) ARRIEL 2B1 5General Electric CF6-80C2B1F 2International Aero Engines V2522-A5 1Lycoming HIO-360-D1A 1Pratt & Whitney Canada PW206C 1Pratt & Whitney PT6-67A 1

Approved replacement parts 6 parts manufacturer approvals

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

Fliegen Works INC 4North American Surveillance Systems INC 1Elmo Air Center INC 1

For these models most: Bell 407 (2).

Maker	Part	Replaces	Fits	Granted	Status
Fliegen Works INC	Inner Support Frame 1020110-4	1020110-4	Fliegen Works Inc. 138S	2016-12-04	current
Fliegen Works INC	Inner Support Frame 1020110-2	1020110-2	Fliegen Works Inc. 138S	2016-12-04	current
Fliegen Works INC	Inner Support Frame 1020110-3	1020110-3	Fliegen Works Inc. 138S	2016-12-04	current
Fliegen Works INC	Inner Support Frame 1020110-1	1020110-1	Fliegen Works Inc. 138S	2016-12-04	current
North American Surveillance Systems INC	Lower Support Frame 407U40009	Modification Part	Bell Helicopter Textron 407	2010-11-25	current
Elmo Air Center INC	Lower Support Frame 407U40009	Modification Part	Bell 407	1998-07-08	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.