The U.S. aircraft register, updated daily
Parts

Clamp Bushing

No failure report names the clamp bushing. 2 FAA approvals let 1 company make a replacement clamp bushing, Brunner Machine Works, LLC holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Robinson R66 (2), Robinson R44 (2).

MakerPartReplacesFitsGrantedStatus
Brunner Machine Works, LLCClamp Upper Bushing R44B-102R44B-102Robinson Helicopter Company R66, R44, R44II2020-09-07current
Brunner Machine Works, LLCClamp Lower Bushing R44B-101R44B-101Robinson Helicopter Company R66, R44, R44II2020-09-07current

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.