The U.S. aircraft register, updated daily
Parts

High Powered

No failure report names the high powered. 1 FAA approvals let 1 company make a replacement high powered, Ball Communications Sys Div holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Boeing 747 (1).

MakerPartReplacesFitsGrantedStatus
Ball Communications Sys DivHigh Powered Relay 301706-500Boeing 301706-500Boeing 747-4001993-02-10current

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.