The U.S. aircraft register, updated daily
Parts

Transcowl Locking

No failure report names the transcowl locking. 3 FAA approvals let 3 companies make a replacement transcowl locking, Parker Hannifin CORP, Abex Nwl Division holding the most (1).

Approved replacement parts 3 parts manufacturer approvals

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

MakerPartReplacesFitsGrantedStatus
Parker Hannifin CORPTranscowl Locking System 5537000-770M955-069Pratt & Whitney PW4164 Series, PW4168 Series2003-09-14current
Parker Hannifin CORP, Abex Nwl DivisionTranscowl Locking System 5537000-6Pratt and Whitney 70M955-059Pratt & Whitney PW4164, 4168, 4168A1998-11-30current
Abex/Nwl Aerospace, Parker Hannifin CORPTranscowl Locking 5537000-5Lockheed/Martin 70M955-049Pratt & Whitney PW4164/41681996-07-10current

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.