The U.S. aircraft register, updated daily
Parts

Iff

No failure report names the iff. 5 FAA approvals let 5 companies make a replacement iff, The Boeing Company holding the most (1).

Approved replacement parts 5 parts manufacturer approvals

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

For these models most: Raytheon Aircraft Company HAWKER 800 (1), Boeing 747 (1).

MakerPartReplacesFitsGrantedStatus
The Boeing CompanyAssembly-IFF/ATC Panel, ADS-B 519-61228-1519-61228-1The Boeing Company 747-200B Series2020-02-23current
Ases LLC DBA Field AerospaceIFF/TCAS Harness Assembly 11A-50-01 - 11A-50-02 11A-05-8050Modification PartThe Boeing Company DC-10-30F (KC-10A)2017-01-18current
B/E Aerospace INCIFF/ TCAS HARNESS ASSEMBLY 11A-50-01 - 11A-50-02 11A-05-805011A-05-8050The Boeing Company DC-10-30F (KC-10A)2014-11-13current
Ases DBA Arinc AerospaceIFF/TCAS Harness Assembly 11A-50-01 - 11A-50-02 11A-05-8050Modification PartThe Boeing Company DC-10-30F (KC-10A)2014-07-10current
Sabreliner CorporationIFF, AN / APX-101, Harness Assembly Main Kit 01-34540-H01-0101-34540-H01-01Raytheon Hawker 800XP1998-11-03current

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.