Rigid Waveguide
No failure report names the rigid waveguide. 2 FAA approvals let 1 company make a replacement rigid waveguide, Airtron Division, Litton Systems holding the most (2).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a rigid waveguide and sell it as an approved part for the models named. These are the companies holding such approvals for a rigid waveguide:
For these models most: Mcdonnell Douglas DC-10 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Airtron Division, Litton Systems | Rigid Waveguide 119737 | DAC, 5459-515 | McDonnell Douglas MD-80 | 1992-12-31 | current |
| Airtron Division, Litton Systems | Rigid Waveguide 119739 | DAC, 5459-507 | McDonnell Douglas DC-10 | 1992-12-31 | 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.