The U.S. aircraft register, updated daily
Parts

Lock Compressor

No failure report names the lock compressor. 2 FAA approvals let 2 companies make a replacement lock compressor, Extex Engineered Products 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 lock compressor and sell it as an approved part for the models named. These are the companies holding such approvals for a lock compressor:

MakerPartReplacesFitsGrantedStatus
Extex Engineered Products INC.Lock- Compressor Blade E741346741346Pratt & Whitney JT8D-1JT8D-1A, JT8D-1B, JT8D-72024-10-31current
Able Aerospace Services, INC.Lock – Compressor Blade 536211-001536211-001Erickson Incorporated (T73-P-1) JFTDl2A-4A, (T73-P-700) JFTDl2A-5A2023-10-03current

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.