The U.S. aircraft register, updated daily
Parts

External Drive

No failure report names the external drive. 6 FAA approvals let 3 companies make a replacement external drive, Aero Accessories INC 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 external drive and sell it as an approved part for the models named. These are the companies holding such approvals for a external drive:

For these models most: Bell 412 (4), Bell 212 (4), Bell 205 (4).

MakerPartReplacesFitsGrantedStatus
Able Engineering and Component Services, INC.External Drive Shaft 21073AA21073Bell Helicopter Textron, Inc. 205A-1, 212, 4122017-02-01current active
Able Aerospace Services, INC.External Drive Shaft 21073AA21073BELL 205A-1, 212, 4122017-02-01current active
Able Aerospace Services, INC.External Drive Shaft Subassembly 21138AA21138BELL 205A-1, 212, 4122017-02-01current active
Able Engineering and Component Services, INC.External Drive Shaft Subassembly 21138AA21138Bell Helicopter Textron, Inc. 205A-1, 212, 4122017-02-01current active
Aero Accessories INCExternal Drive Spline 82-00068Airborne drive Spline and Aero Accessories...Franklin Engine Co. Any engine series where Airborne...1999-10-17current
Aero Accessories INCExternal Drive Spline Part No 82-00068 Rev 1 dtd 11/8/84Airborne Mfg Co Dry Air Pumps. See...Airborne Mfg Co, Pump 200CC, 200CW, 211CC1984-10-09current

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.