Parts · Engine

Switchpack

26 failure reports named the switchpack in the last ten years, 26 since 2016, most often on the Boeing 737; the condition most often found was "failed". 1 FAA approvals let 1 company make a replacement switchpack, Spirit Aerosystems INC holding the most (1).

Reports by year

Reports by year, as a table

	reports
2016	2
2017	2
2018	2
2019	1
2020	1
2022	4
2023	5
2024	1
2025	7
2026	1

Which system the reports file it under last ten years

Engine12Flight controls8Landing gear4Instruments and avionics2

Reports by system, as a table

	reports
Engine	12
Flight controls	8
Landing gear	4
Instruments and avionics	2

Models most often reporting it last ten years

Boeing 73726

Models most reported, as a table

	reports
Boeing 737	26

How it failed the condition found, last ten years

failed8faulty8faulted5inoperative4warning light1

Conditions found, as a table

	reports
failed	8
faulty	8
faulted	5
inoperative	4
warning light	1

Engines most often reporting it

CFM International CFM56-7B27 3 CFM International CFM56-7B27E 3

Approved replacement parts 1 parts manufacturer approvals

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

Spirit Aerosystems INC 1

For these models most: Boeing 737 (1).

Maker	Part	Replaces	Fits	Granted	Status
Spirit Aerosystems INC	SWITCHPACK ASSY - AU 254A1150-12	254A1150-12	Boeing 737-600 SERIES, 737-700 SERIES,...	2009-06-14	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.