Dual Variable
No failure report names the dual variable. 1 FAA approvals let 1 company make a replacement dual variable, Tgh Aviation Products holding the most (1).
Approved replacement parts 1 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a dual variable and sell it as an approved part for the models named. These are the companies holding such approvals for a dual variable:
For these models most: Douglas DC-8 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Tgh Aviation Products | Dual Variable Power Transformer Switch 27-3000 | McDonnell Douglas 16446 | McDonnell Douglas DC-8-32, -33, -53 | 1998-08-31 | 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.