Panel Filter
No failure report names the panel filter. 3 FAA approvals let 1 company make a replacement panel filter, Keddeg Company holding the most (3).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a panel filter and sell it as an approved part for the models named. These are the companies holding such approvals for a panel filter:
For these models most: Boeing 757 (1), Boeing 737 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Keddeg Company | Panel Filter Assembly 21FA104 | Modification Part | Boeing 737-300 Series, 737-400 Series,... | 2010-05-26 | current |
| Keddeg Company | Panel Filter Assembly 21FA104 | Modification Part | Boeing B737-300, 400, 500 Series | 2010-04-08 | current |
| Keddeg Company | Panel Filter Assembly 21FA104 | Modification Part | Boeing B737-300, 400, 500 Series | 2002-06-12 | 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.