Duct Fan
No failure report names the duct fan. 4 FAA approvals let 3 companies make a replacement duct fan, Arrowhead Products holding the most (2).
Approved replacement parts 4 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a duct fan and sell it as an approved part for the models named. These are the companies holding such approvals for a duct fan:
For these models most: Boeing 747 (2), Boeing 727 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Extex Engineered Products INC. | Duct – Fan Combustion Chamber & Turbine Assy Of 616313 | 616313 | Pratt & Whitney JT8D-1, JT8D-1A, JT8D-1B | 2024-10-28 | current |
| Arrowhead Products | Duct Assembly Fwd Fan Case Engine Anti-Ice 17747-111 | S332U839-3 | Boeing 747-8 SERIES, 747-8F SERIES | 2013-06-11 | current |
| Arrowhead Products | Duct Assembly Aft Fan Case Engine Anti-Ice 17747-109 | S332U839-2 | Boeing 747-8 SERIES, 747-8F SERIES | 2013-06-11 | current |
| Eaton Aerospace | Duct Assembly-Fan Air Off-Take QF7182600-1 | Boeing 727-22C, -25C, -27C | 1995-07-31 | 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.