Backup Packing
No failure report names the backup packing. 8 FAA approvals let 2 companies make a replacement backup packing, Aaxico Technical Services, INC. holding the most (7).
Approved replacement parts 8 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a backup packing and sell it as an approved part for the models named. These are the companies holding such approvals for a backup packing:
For these models most: Boeing 747 (4), Boeing 777 (2), Boeing 767 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Aaxico Technical Services, INC. | Backup Packing Ring 744K5MT-2NATS | 744K5MT2N | Boeing 767-300 Series | 2018-09-10 | current |
| Aaxico Technical Services, INC. | Backup Packing Ring 7449MT-2NATS | 7449MT2N | Boeing 767-300 Series | 2018-09-10 | current |
| Aaxico Technical Services, INC. | Backup Packing Ring 7448MT-2NATS | 7448MT2N | Boeing 747-200B, 300, 400 Series | 2018-07-10 | current |
| Aaxico Technical Services, INC. | BACKUP PACKING RING 7445FT-4780NATS | 7445FT-4780N | BOEING 777-200, 300, 300ER Series | 2018-04-16 | current |
| Aaxico Technical Services, INC. | BACKUP PACKING RING 7445FR-2TATS | 7445FR-2T | BOEING 777-200, 300, 300ER Series | 2018-02-20 | current |
| Aaxico Technical Services, INC. | BACKUP PACKING RING 7714MT-2NATS | Greene Tweed 7714MT-2N | BOEING 747-200B, 300, 400 Series | 2017-06-06 | current |
| Aaxico Technical Services, INC. | BACKUP PACKING RING 7447FT-4780ATS | Greene Tweed P/N 7447FT4780 | BOEING 747-200B, 300, 400 Series | 2017-04-05 | current |
| Aaxico Technical Services | BACKUP PACKING RING 7451FT-4780ATS | Greene Tweed P/N 7451FT4780 | Boeing 747-200B, 200C, 300 | 2015-04-12 | 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.