Modification To
No failure report names the modification to. 4 FAA approvals let 4 companies make a replacement modification to, Summit Aviation holding the most (1).
Approved replacement parts 4 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a modification to and sell it as an approved part for the models named. These are the companies holding such approvals for a modification to:
For these models most: Sikorsky S-64 (1), Learjet 31 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Summit Aviation | Modification to install New Engine Mount Brackets. 22593010 | Modification Part | Continental Motors IO-550 N, P with STC SE02525AT installed. | 2018-04-29 | current |
| Learjet INC | Modification to Permit Use of JP-4/Jet B Fuels in Single... T100113 | Modification Part | Learjet 31A | 2004-12-20 | current |
| Erickson Air-Crane CO | Modification to Disarm the External Load Jettison... MDL. NO. 90FS058-D01 | Modification Part | Sikorsky S-64E | 1994-05-26 | current |
| Lucas Aerospace Power Trans | Modification Kit 42E09-17B to 42E09-21A PLSK284 | Mitsubishi YS-11 | 1992-03-16 | 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.