Tank System
No failure report names the tank system. 3 FAA approvals let 1 company make a replacement tank system, Quiet Wing Aerospace LLC 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 tank system and sell it as an approved part for the models named. These are the companies holding such approvals for a tank system:
For these models most: Airbus A321 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Quiet Wing Aerospace LLC | A321 Fwd Tank System Kit QA-28-1001 | Modification part | Airbus SAS A321-211 | 2025-02-28 | current |
| Quiet Wing Aerospace LLC | 737-400 6 Tank System Kit QB3-28-0003 | Modification part | The Boeing Company B737-400 series | 2025-02-28 | current |
| Quiet Wing Aerospace LLC | 737-500 4 Tank System Kit QB3-28-0063 | Modification part | The Boeing Company B737-500 series | 2025-02-28 | 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.