The U.S. aircraft register, updated daily
Parts

Gasket Transmission

No failure report names the gasket transmission. 1 FAA approvals let 1 company make a replacement gasket transmission, Tulsa Heliparts INC holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Bell 47 (1).

MakerPartReplacesFitsGrantedStatus
Tulsa Heliparts INCGasket Transmission & Adapter Plate 90-620-374-1Bell 47-620-374-1Bell 47B, 47B3, 47D1996-01-10current

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.