One Minute
No failure report names the one minute. 2 FAA approvals let 2 companies make a replacement one minute, Pacific Electro Dynamics holding the most (1).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a one minute and sell it as an approved part for the models named. These are the companies holding such approvals for a one minute:
For these models most: Boeing 747 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| General Dynamics Electronic Systems | One-Minute Timer 419-3 | Modification Part | Boeing 747-100, 747-200, 747-300 | 2001-03-27 | current |
| Pacific Electro Dynamics | One-Minute Timer 419-3 | Boeing 419-3 | Boeing 747-100, -200, -300 | 1991-09-23 | 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.