The U.S. aircraft register, updated daily
Parts

Compass Annunciator

No failure report names the compass annunciator. 3 FAA approvals let 3 companies make a replacement compass annunciator, Honeywell International INC holding the most (1).

Approved replacement parts 3 parts manufacturer approvals

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

For these models most: Messerschmitt-Bolkow-Blohm BK 117 (3), Airbus Helicopters EC-135 now H135 (3).

MakerPartReplacesFitsGrantedStatus
Honeywell INC, Ces-CsmCompass Annunciator (10.1166) 2503148-22503148-2Eurocopter Deutschland BO105, BK117, EC1352003-02-19current
Honeywell International INCCompass Annunciator (10.1166) 2503148-22503148-2Eurocopter Deutschland BO105, BK117, EC1352003-02-19current
Honeywell INCCompass Annunciator (10.1166) 2503148-22503148-2Eurocopter Deutschland BO105, BK117, EC1352003-02-19current

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.