The U.S. aircraft register, updated daily
Parts

Seat Roller

No failure report names the seat roller. 2 FAA approvals let 2 companies make a replacement seat roller, Mcfarlane Aviation INC holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Pilatus Britten-Norman Ltd. BN-2 (1), Cessna U206 Stationair (1), Cessna TU206 (1), Cessna T207 (1).

MakerPartReplacesFitsGrantedStatus
Mcfarlane Aviation INCSeat Roller Housing Assembly MC1200603-41B1200603-41 and 1414104-8Textron Aviation Inc. 210-5 (205) s/n ALL, 210-5A (205A)...2016-06-27current
Airmark Approved Parts CompanySeat Roller BN16-1761NB-16-A4-1761Pilatus Britten-Norman BN-2 Series1996-12-22current

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.