Internal Gear
No failure report names the internal gear. 3 FAA approvals let 2 companies make a replacement internal gear, Dec Technologies INC holding the most (2).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a internal gear and sell it as an approved part for the models named. These are the companies holding such approvals for a internal gear:
For these models most: Mcdonnell Douglas DC-9 (1), Mcdonnell Douglas DC-10 (1), Boeing 767 (1), Boeing 737 (1), Boeing 727 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aviatron INC | Internal Gear Hub AVUS3504759-1 | 3504759-1 | General Electric Company CF34-8C1, CF34-8C5, CF34-8C5A1 | 2024-10-18 | current |
| Dec Technologies INC | Internal Gear DEC46-010-501 | Whittaker Controls 151267 | Boeing 737-200, -800 757, 767 | 2003-09-03 | current |
| Dec Technologies INC | Internal Gear DEC46-010-501 | Whittaker Controls 151267, when installed in... | Boeing 727 737, DC-9, MD-80 | 2002-11-14 | 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.