Valve Brake
No failure report names the valve brake. 2 FAA approvals let 1 company make a replacement valve brake, Sargent Aerospace 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 valve brake and sell it as an approved part for the models named. These are the companies holding such approvals for a valve brake:
For these models most: Boeing 747 (1), Boeing 727 (1), Boeing 707 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Sargent Aerospace | Valve Brake 4308DA-3 | Boeing 60-00219-2 | Boeing 747 | 1991-06-05 | current |
| Sargent Aerospace | Valve Brake B2700-14 | Boeing 10-3205-1 | Boeing 707, 720, 727 | 1991-06-05 | 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.