Bus Protection
No failure report names the bus protection. 8 FAA approvals let 3 companies make a replacement bus protection, Hamilton Sundstrand Corporation holding the most (4).
Approved replacement parts 8 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a bus protection and sell it as an approved part for the models named. These are the companies holding such approvals for a bus protection:
For these models most: Boeing 737 (5), Boeing 727 (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Hamilton Sundstrand Corporation | Bus Protection Panel 915F213-2 | Boeing 10-61224-4 | Boeing 737-300, 400, 500 | 1997-01-27 | current |
| Hamilton Sundstrand Corporation | Bus Protection Panel 915F213-4 | Boeing P/N 10-61224-4 | Boeing 737-300, -400, -500 | 1996-07-25 | current |
| Hamilton Sundstrand Corporation | Bus Protection Panel #915F213-3 Dwg. No. Dwg.... | Boeing P/N 10-61224-4 | Boeing 737 | 1995-03-26 | current |
| Hamilton Sundstrand Corporation | Bus Protection Panel #902F283-2 Dwg. No. Dwg.... | Boeing P/N 10-3324-11 | Boeing 727 | 1995-03-26 | current |
| Sundstrand Electric Power Sys | Bus Protection Panel 915F213-3 | Boeing 10-61224-4 | Boeing 737 | 1993-12-16 | current |
| Sundstrand Electric Power Sys | Bus Protection Panel 902F283-2 | Boeing 10-3324-11 | Boeing 727 | 1993-12-16 | current |
| Westinghouse Electric CORP, Electrical Systems Div | Bus Protection Panel 915F213-3 | Boeng 10-61224-4 | Boeing 737 | 1991-09-10 | current |
| Westinghouse Electric CORP, Electrical Systems Div | Bus Protection Panel 902F283-2 | Boeing 10-3324-11 | Boeing 727 | 1991-09-10 | 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.