Type Audio
No failure report names the type audio. 3 FAA approvals let 1 company make a replacement type audio, Sigma Tek INC 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 type audio and sell it as an approved part for the models named. These are the companies holding such approvals for a type audio:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Sigma Tek INC | Type 1U460 Audio Selector Panel 1U460-001 | British Aerospace 1U460-001 | BAE Systems Operations) Limited (146-RJ Series | 1996-08-04 | current |
| Sigma Tek INC | Type 1U471 Audio Selector Panel 1U471-001 | British Aerospace 1U471-001 | BAE Systems Operations) Limited (146-RJ Series | 1996-08-04 | current |
| Sigma Tek INC | Type 1U471 Audio Selector Panel 1U471-003 | British Aerospace 1U471-003 | BAE Systems Operations) Limited (146-RJ Series | 1996-08-04 | 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.