The U.S. aircraft register, updated daily
Parts

Alliedsignal Mark

No failure report names the alliedsignal mark. 2 FAA approvals let 1 company make a replacement alliedsignal mark, Aircraft Engineering & Installation Services 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 alliedsignal mark and sell it as an approved part for the models named. These are the companies holding such approvals for a alliedsignal mark:

For these models most: Boeing 747 (1), Boeing 737 (1).

MakerPartReplacesFitsGrantedStatus
Aircraft Engineering & Installation Services INCAlliedSignal Mark II Communications Management Unit... 159-08189-0001-001Modification PartBoeing 737-300 Series, -400 Series -500 Series1999-07-27current
Aircraft Engineering & Installation Services INCAlliedSignal Mark VII Ground Proximity and Windshear... 960-2166-001Modification PartBoeing 747-100 Series, 747-100B Series,...1996-08-29current

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.