The U.S. aircraft register, updated daily
Parts

Serrated Blade

No failure report names the serrated blade. 8 FAA approvals let 1 company make a replacement serrated blade, Airworthy holding the most (8).

Approved replacement parts 8 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a serrated blade and sell it as an approved part for the models named. These are the companies holding such approvals for a serrated blade:

For these models most: Boeing 777 (8).

MakerPartReplacesFitsGrantedStatus
AirworthySerrated Blade Fitting, RH 16D01D21515-00516D01D21515-005Boeing 777-200, 777-200LR Series2019-08-14current
AirworthySerrated Blade Fitting, LH 16D01D21515-00316D01D21515-003Boeing 777-200, 777-200LR Series2019-08-14current
AirworthySerrated Blade Fitting, RH 16D01D21505-00416D01D21505-004Boeing 777-200, 777-200LR Series2019-08-14current
AirworthySerrated Blade Fitting, LH 16D01D21505-00316D01D21505-003Boeing 777-200, 777-200LR Series2019-08-14current
AirworthySerrated Blade Fitting, LH 16D01D21515-00316D01D21515-003Boeing 777-200, -200LR Series2018-12-02current
AirworthySerrated Blade Fitting, RH 16D01D21515-00516D01D21515-005Boeing 777-200, -200LR Series2018-12-02current
AirworthySerrated Blade Fitting, RH 16D01F21505-00416D01F21505-004Boeing 777-200, -200LR Series2018-12-02current
AirworthySerrated Blade Fitting, LH 16D01F21505-00316D01F21505-003Boeing 777-200, -200LR Series2018-12-02current

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.