Hump
No failure report names the hump. 9 FAA approvals let 1 company make a replacement hump, Flexfab INC holding the most (9).
Approved replacement parts 9 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a hump and sell it as an approved part for the models named. These are the companies holding such approvals for a hump:
For these models most: Boeing 747 (3), Boeing 737 (2), Boeing 727 (2), Boeing 757 (1), Boeing 707 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Flexfab INC | Hump BOE2119-0003 | Boeing S312N306-3 | Boeing 737-300, -400, -500 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2108-0005 | Boeing S312U281-5 | Boeing 747-400 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2127-0023 | Boeing 10-3274-23 | Boeing 727-100, -200 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2109 | Boeing 10-3365-3 | Boeing 727-200 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2108-0004 | Boeing S312N281-4 | Boeing 747-200, -300, -400 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2119-0002 | Boeing S312N306-2 | Boeing 737-300, -400, -500 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2104-0001 | Boeing S312N306-1 | Boeing 757-200 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2107-0006 | Boeing S312U280-6 | Boeing 747-200, -300 | 1994-07-24 | current |
| Flexfab INC | Hump BOE2127-0008 | Boeing 10-3274-8 | Boeing 707-320 | 1994-07-24 | 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.