The U.S. aircraft register, updated daily
Parts

Rapid Removal

No failure report names the rapid removal. 2 FAA approvals let 1 company make a replacement rapid removal, Certified Technology INC holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Md Helicopters Inc 500 (1), Md Helicopters Inc 369 (1), Mcdonnell Douglas Helicopter 500 (1), Mcdonnell Douglas Helicopter 369 (1).

MakerPartReplacesFitsGrantedStatus
Certified Technology INCRapid removal door system hinges. All Parts Noted on...Modification PartsMcDonnell Douglas Co. Hughes) (369A, 369D, 369E2011-02-01current
Certified Technology INCRapid removal door system hinges. All Parts Noted on...Modification PartsMD Helicopters, Inc. MDHI) (369A, 369D, 369E2000-10-31current

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.