The U.S. aircraft register, updated daily
Parts

Rotor And

No failure report names the rotor and. 6 FAA approvals let 5 companies make a replacement rotor and, R & D Dynamics Corporation holding the most (2).

Approved replacement parts 6 parts manufacturer approvals

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

For these models most: Boeing 777 (3), Erickson S-64 (2), Boeing 737 (1).

MakerPartReplacesFitsGrantedStatus
Source Manufacturing INCRotor and Shaft Assembly AS58575TMTAS58575Erickson... S-64E, S-64F2026-04-10current
R & D Dynamics CorporationRotor and Nut - Fan RD1000842-21000842-2Boeing 777-200 Series, 777-300 Series,...2020-01-21current
R & D Dynamics CorporationROTOR AND NUT - FAN RD1000842-21000842-2BOEING 777-200 Series, 777-300 Series,...2013-05-02current
Tmt Research Development INCRotor and Shaft Assembly AS58575TMTAS58575 (Nash Engineering)Erickson Air Crane Company S-64E, S64F When Nash Engineering...2010-06-02current
Wencor LLCRotor and Nut - Fan Assembly 1000842-2WE1000842-2Boeing 777-200 series, 777-200LR series,...2010-02-02current
Flight Specialties Components Corporation, A Heico SubsidiaryRotor and Shaft Assy 40-81720FSCrane Hydro-Aire P/N 40-81720 Installed in...Boeing 737-300 Series, 737-400 Series,...2006-01-11current

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.