The U.S. aircraft register, updated daily
Parts

Couplex Lock

No failure report names the couplex lock. 1 FAA approvals let 1 company make a replacement couplex lock, Pma Design & Manufacturing holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Boeing 737 (1).

MakerPartReplacesFitsGrantedStatus
Pma Design & ManufacturingCouplex Lock CL2739-11UACL2739-11The Boeing Company 737-600, 737-700, 737-8002024-04-22current

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.