The U.S. aircraft register, updated daily
Parts

Top Cowling

No failure report names the top cowling. 2 FAA approvals let 2 companies make a replacement top cowling, Ultra Electronics Ice, 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 top cowling and sell it as an approved part for the models named. These are the companies holding such approvals for a top cowling:

For these models most: Airbus Helicopters MBB-BK 117 C-2 (1), Aeronca 15 (1).

MakerPartReplacesFitsGrantedStatus
Ultra Electronics Ice, INC.Top Cowling Disconnect (on HISL) to Tail Rotor Optical... 6203-1327-0016203-1327-001H13EU MBB-BK 117 C-22023-01-03current
Burl'S Aircraft LLCTop Cowling RW-1103, RW-1104, RW-1105Modification PartAeronca 15AC and S15AC2007-07-30current

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.