Dfdr Upgrade
No failure report names the dfdr upgrade. 3 FAA approvals let 1 company make a replacement dfdr upgrade, General Aerospace INC 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 dfdr upgrade and sell it as an approved part for the models named. These are the companies holding such approvals for a dfdr upgrade:
For these models most: Boeing 737 (1), Boeing 707 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| General Aerospace INC | DFDR Upgrade from 6 to 11 parameters Installation Kit GA-DFDR-KIT-B737 | Modification Part | Boeing 737-100, -200, -200C | 1999-05-11 | current |
| General Aerospace INC | DFDR Upgrade from 6 to 11 parameters Installation Kit GA-DFDR-KIT-B707 | Modification Part | Boeing 707-300 Series | 1999-05-11 | current |
| General Aerospace INC | DFDR Upgrade from 6 to 11 parameters Installation Kit GA-DFDR-KIT-B737-( ) | Modification Part | Boeing B737-100, -200, -200C | 1999-02-18 | 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.