The U.S. aircraft register, updated daily
Parts

Inch Coupler

No failure report names the inch coupler. 4 FAA approvals let 1 company make a replacement inch coupler, Adaptive Aerospace CORP holding the most (4).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Boeing 747 (4).

MakerPartReplacesFitsGrantedStatus
Adaptive Aerospace CORP16 inch Coupler 747STSCD904-013747STSCD904-013Boeing 747-100, -200C series2015-09-17current
Adaptive Aerospace CORP30 inch Coupler 747STSCD904-001747STSCD904-001Boeing 747-100, -200C series2015-09-17current
Adaptive Aerospace CORP10 inch Coupler 747STSCD904-019747STSCD904-019Boeing 747-100, -200C series2015-09-17current
Adaptive Aerospace CORP24 inch Coupler 747STSCD904-007747STSCD904-007Boeing 747-100, -200C series2015-09-17current

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.