Balance
No failure report names the balance. 2 FAA approvals let 1 company make a replacement balance, Fairchild Space & Def CORP 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 balance and sell it as an approved part for the models named. These are the companies holding such approvals for a balance:
For these models most: Boeing 747 (2), Boeing 707 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Fairchild Space & Def CORP | Balance Assembly, dwg 532000 532000-3 | 60B50057-3 | Boeing 747-100, -200 | 1994-02-15 | current |
| Fairchild Space & Def CORP | Balance Assembly 532000-4 | 60B50057-4 | Boeing 707-320, 747-100, -200 | 1994-02-15 | 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.