The U.S. aircraft register, updated daily
Parts

Module Parking

No failure report names the module parking. 2 FAA approvals let 2 companies make a replacement module parking, Circle Seal Controls 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 module parking and sell it as an approved part for the models named. These are the companies holding such approvals for a module parking:

For these models most: Boeing 747 (2).

MakerPartReplacesFitsGrantedStatus
Circor Aerospace, INC.Module Assembly Parking Brake MC99-43-3S274U010-5Boeing 747-400 Series2015-05-03current
Circle Seal Controls INCModule Assembly Parking Brake MC99-43-3Boeing S274U010-5Boeing 747-400 Series1998-10-18current

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.