Nut Diffuser
No failure report names the nut diffuser. 2 FAA approvals let 2 companies make a replacement nut diffuser, Bristol Industries holding the most (1).
Approved replacement parts 2 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a nut diffuser and sell it as an approved part for the models named. These are the companies holding such approvals for a nut diffuser:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Alcoa Fastening Systems | Nut- Diffuser Case, Non-Locking PK50147-4 | 749590 | Pratt & Whitney JT9D-20, -20J, -3A | 2005-03-16 | current |
| Bristol Industries | Nut-Diffuser, Case BH01208-4 | Pratt & Whitney 749590 | Pratt & Whitney JT9D-3A, -7, -7A | 1995-06-26 | 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.