Cartridge Heater
No failure report names the cartridge heater. 3 FAA approvals let 2 companies make a replacement cartridge heater, Transdigm INC, Adel Wiggins Group holding the most (2).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a cartridge heater and sell it as an approved part for the models named. These are the companies holding such approvals for a cartridge heater:
For these models most: Boeing 737 (2), Boeing 757 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Transdigm INC, Adel Wiggins Group | CARTRIDGE HEATER CH017 | CH017 | BOEING 737-8200 | 2021-06-07 | current |
| Soundair Aviation Services | Cartridge Heater SP3833-19-4025 | TK85009 | Boeing 757-200 Series, 757-300Series | 2015-08-05 | current |
| Transdigm INC, Adel Wiggins Group | Cartridge Heater Assembly CH021 | CH017 | Boeing 737-600 Series, 737-700 Series,... | 2010-10-25 | 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.