The U.S. aircraft register, updated daily
Parts

Airborne Emergency

No failure report names the airborne emergency. 2 FAA approvals let 1 company make a replacement airborne emergency, Metro Aviation 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 airborne emergency and sell it as an approved part for the models named. These are the companies holding such approvals for a airborne emergency:

For these models most: Airbus Helicopters EC-135 now H135 (1).

MakerPartReplacesFitsGrantedStatus
Metro Aviation INCAirborne Emergency Medical System Kit 135M-100Modification PartAirbus Helicopters... EC135P3, EC135P3 (Equipped with...2020-03-24current
Metro Aviation INCAirborne Emergency Medical System Kit 135M-100Modification PartEurocopter Deutschland GmbH ECD) (EC135 P1, P2, P2+2010-01-14current

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.