Diaphragm Retainer
No failure report names the diaphragm retainer. 7 FAA approvals let 5 companies make a replacement diaphragm retainer, Pma Sales LLC holding the most (3).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a diaphragm retainer and sell it as an approved part for the models named. These are the companies holding such approvals for a diaphragm retainer:
For these models most: Boeing 737 (6).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aero Fluid Products | Diaphragm Retainer 7003-49-1 | 321239 | Boeing 737-100 Series, 737-200 Series,... | 2019-02-20 | current |
| Pma Sales LLC | Diaphragm Retainer P321239 | 321239 | BOEING 737-100 Series, 737-200 Series,... | 2016-10-06 | current |
| Pma Sales LLC | Diaphragm Retainer P321239 | 321239 | Boeing 737-100 Series, 737-200 Series,... | 2012-10-16 | current |
| Jet Parts Engineering INC | Diaphragm Retainer 7206329JP-2 | 7206329-2 | Boeing B737-300 Series, B737-400 Series,... | 2011-09-13 | current |
| Pma Sales LLC | Diaphragm Retainer P321239 | 321239 | Boeing 737-100 Series, 737-200 Series,... | 2008-07-28 | current |
| Aviation Component Solutions | Diaphragm Retainer P00495 | Whittaker Controls P/N 322651 installed in... | The Boeing Company 737-300 series, 737-400 series,... | 2004-08-11 | current |
| Dukes INC | Diaphragm Retainer 7003-49-1 | 321239 | Boeing 737-100 Series, 737-200 Series,... | 2003-04-09 | 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.