The U.S. aircraft register, updated daily
Parts

Top Ata

No failure report names the top ata. 1 FAA approvals let 1 company make a replacement top ata, Avionics Support Group, INC. 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 top ata and sell it as an approved part for the models named. These are the companies holding such approvals for a top ata:

For these models most: Boeing 737 (1).

MakerPartReplacesFitsGrantedStatus
Avionics Support Group, INC.Top Kit – ATA 23 B737 ACARS/VDR Mode 2 Instl. 2755-2327-500Modification PartThe Boeing Company 737-600/-700/-800/-900 Series2023-07-18current

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.