The U.S. aircraft register, updated daily
Parts

Isolation Plate

No failure report names the isolation plate. 2 FAA approvals let 2 companies make a replacement isolation plate, North American Surveillance Systems 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 isolation plate and sell it as an approved part for the models named. These are the companies holding such approvals for a isolation plate:

For these models most: Airbus Helicopters AS350 AStar (Écureuil), now H125 (2).

MakerPartReplacesFitsGrantedStatus
North American Surveillance Systems INCIsolation Plate, Gimbal Detail 374UM20005Modification PartEurocopter France AS-350D, AS-350B, AS-350B12010-11-25current
Elmo Air Center INCIsolation Plate, Gimbal Detail 374UM20005Modification PartEurocopter France AS-350D, AS-350B, AS-350B11998-07-08current

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.