Parts · Electrical power

Test Button

19 failure reports named the test button in the last ten years, 19 since 2019, most often on the Airbus A300; the condition most often found was "broken". 2 FAA approvals let 2 companies make a replacement test button, B/E Aerospace, INC. holding the most (1).

Reports by year

Reports by year, as a table

	reports
2019	2
2020	4
2021	1
2022	2
2024	5
2026	5

Which system the reports file it under last ten years

Electrical power7Emergency equipment5Airframe structure4Cabin, seats and restraints3

Reports by system, as a table

	reports
Electrical power	7
Emergency equipment	5
Airframe structure	4
Cabin, seats and restraints	3

Models most often reporting it last ten years

Airbus A3005Boeing 7374Boeing 7673Airbus A3302Mcdonnell Douglas MD-112Airbus A3201Boeing 7171Boeing 7771

Models most reported, as a table

	reports
Airbus A300	5
Boeing 737	4
Boeing 767	3
Airbus A330	2
Mcdonnell Douglas MD-11	2
Airbus A320	1
Boeing 717	1
Boeing 777	1

How it failed the condition found, last ten years

broken5inoperative3corroded1damaged1dirty1failed1faulted1intermittent1malfunctioned1no test1

Conditions found, as a table

	reports
broken	5
inoperative	3
corroded	1
damaged	1
dirty	1
failed	1
faulted	1
intermittent	1
malfunctioned	1
no test	1

Engines most often reporting it

CFM International CFM56-7B27 1

Approved replacement parts 2 parts manufacturer approvals

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

B/E Aerospace, INC. 1B/E Aerospace 1

For these models most: Boeing 787 Dreamliner (2).

Maker	Part	Replaces	Fits	Granted	Status
B/E Aerospace, INC.	TEST BUTTON ASSY, OXYGEN 4572022-001	(4572022-001)	Boeing 787-8	2013-06-19	current
B/E Aerospace	TEST BUTTON ASSY, OXYGEN 4572022-001	4572022-001	Boeing 787-8	2012-07-12	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.