Intercostal Floor
No failure report names the intercostal floor. 3 FAA approvals let 1 company make a replacement intercostal floor, Aviation Technical Services holding the most (3).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a intercostal floor and sell it as an approved part for the models named. These are the companies holding such approvals for a intercostal floor:
For these models most: Boeing 737 (3).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aviation Technical Services | Intercostal – Floor, AFT Lavatory 147A5660U3ATSPMA | 147A5660U3 | Boeing 737-700 Series, 737-800 Series, 737-8 | 2026-05-19 | current |
| Aviation Technical Services | Intercostal – Floor, AFT Lavatory 147A5660Y21ATSPMA | 147A5660Y21 | The Boeing Company 737-700 Series, 737-800, Series | 2025-10-01 | current |
| Aviation Technical Services | Intercostal – Floor, AFT Lavatory 147A5660U22ATSPMA | 147A5660U22 | The Boeing Company 737-700 Series, 737-800 Series, 737-8 | 2025-10-01 | 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.