Dm Transponder
No failure report names the dm transponder. 3 FAA approvals let 2 companies make a replacement dm transponder, Cpi Eimac Division 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 dm transponder and sell it as an approved part for the models named. These are the companies holding such approvals for a dm transponder:
For these models most: Boeing 747 (3), Boeing 737 (2), Mcdonnell Douglas DC-9 (1), Boeing 727 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Cpi/Mpp Division | 860 E2 DM Transponder 8906AL | 256-0192-010 | Boeing 747-251F, 2J9F, 251B | 2019-10-27 | current |
| Cpi Eimac Division | 860 E2 DM Transponder 8906AL | 256-0192-010 | Boeing 747-251F, 2J9F, 251B | 2018-04-11 | current |
| Cpi Eimac Division | 860 E2 DM Transponder 8906AL | 256-0192-010 | Boeing 747-251F, 2J9F, 251B | 2006-05-24 | 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.