Parts · Airframe structure

Frame Angle

250 failure reports named the frame angle in the last ten years, 258 since 1998, most often on the Boeing 717; the condition most often found was "cracked". 2 FAA approvals let 2 companies make a replacement frame angle, Flight Structures INC holding the most (1).

Reports by year

Reports by year, as a table

	reports
1998	8
2017	33
2018	31
2019	24
2020	26
2021	30
2022	28
2023	2
2024	15
2025	36
2026	25

Which system the reports file it under last ten years

Airframe structure249Cabin, seats and restraints1

Reports by system, as a table

	reports
Airframe structure	249
Cabin, seats and restraints	1

Models most often reporting it last ten years

Boeing 71749Boeing 73736Bombardier CL-600 Challenger and CRJ36Boeing 75730Airbus A32112Boeing 7679Embraer EMB-145 ERJ 1459Mcdonnell Douglas MD-118Airbus A3206Mcdonnell Douglas Aircraft Co MD 836Airbus A3005Airbus Helicopters EC-135 now H1354

Models most reported, as a table

	reports
Boeing 717	49
Boeing 737	36
Bombardier CL-600 Challenger and CRJ	36
Boeing 757	30
Airbus A321	12
Boeing 767	9
Embraer EMB-145 ERJ 145	9
Mcdonnell Douglas MD-11	8
Airbus A320	6
Mcdonnell Douglas Aircraft Co MD 83	6
Airbus A300	5
Airbus Helicopters EC-135 now H135	4

How it failed the condition found, last ten years

cracked115corroded101damaged19dented7chafed2gouged2punctured2elongated1loose1

Conditions found, as a table

	reports
cracked	115
corroded	101
damaged	19
dented	7
chafed	2
gouged	2
punctured	2
elongated	1
loose	1

Engines most often reporting it

General Electric CF34-8C5 1General Electric CF6-80A 1Pratt & Whitney Canada PW206B2 1Turbomeca (Safran) ARRIEL 1E2 1

Approved replacement parts 2 parts manufacturer approvals

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

Flight Structures INC 1Airborne Maintenance & Engineering Services 1

For these models most: Mcdonnell Douglas DC-9 (1), Boeing 737 (1).

Maker	Part	Replaces	Fits	Granted	Status
Airborne Maintenance & Engineering Services	Frame Angle 007-00420-5	007-00420-5	Boeing 737-300/400/700	2022-07-11	current
Flight Structures INC	FRAME ANGLE 98FS857210-1	MODIFICATION PART	McDonnell Douglas DC9-32	2000-04-13	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.