Spring Pack
No failure report names the spring pack. 5 FAA approvals let 4 companies make a replacement spring pack, Goodrich Corporation holding the most (2).
Approved replacement parts 5 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a spring pack and sell it as an approved part for the models named. These are the companies holding such approvals for a spring pack:
For these models most: Boeing 767 (3), Boeing 777 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Goodrich Corporation | Spring Pack Pad, PDU 77FN099-1 | S457W100-1 | The Boeing Company 777F Series | 2012-09-12 | current |
| Goodrich Corporation | Spring Pack Pad, PDU 77FN099-2 | S457W100-1 | The Boeing Company 777F Series | 2012-09-12 | current |
| Eaton Aerospace Sterer Engineering | Spring Pack Assembly 87570-1 | 87570-1 | Boeing 767-300 | 2000-11-07 | current |
| Vickers INC, Fluid Control and Actuation Div | Spring Pack Assembly 87570-1 | Boeing 87570-1 | Boeing 767-300 | 1999-10-24 | current |
| Eaton Corporation, Valve & Actuator Div | Spring Pack Assembly 87570-1 | Boeingr 87570-1 | Boeing 767-300 | 1996-03-19 | 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.