The U.S. aircraft register, updated daily
Parts

Down Converter

No failure report names the down converter. 4 FAA approvals let 4 companies make a replacement down converter, Honeywell International US LLC holding the most (1).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Gulfstream G-IV Gulfstream IV (4).

MakerPartReplacesFitsGrantedStatus
Honeywell International US LLCDown Converter Assembly 4088467-902Modification PartGulfstream G-IV2007-08-02current
Honeywell INCDown Converter Assembly 4088467-9014088467-901Gulfstream GIV2003-02-19current
Honeywell International INCDown Converter Assembly 4088467-9014088467-901Gulfstream GIV2003-02-19current
Honeywell INC, Ces-CsmDown Converter Assembly 4088467-9014088467-901Gulfstream GIV2003-02-19current

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.