The U.S. aircraft register, updated daily
Parts

Top Mode

No failure report names the top mode. 1 FAA approvals let 1 company make a replacement top mode, Woven Electronics, LLC 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 mode and sell it as an approved part for the models named. These are the companies holding such approvals for a top mode:

For these models most: Cessna 525 CitationJet (CJ series) (1).

MakerPartReplacesFitsGrantedStatus
Woven Electronics, LLCTOP NO. 1 & NO. 2 MODE S ANTENNA INSTL (OPTION) 598-01-0018-001598-01-0018-001TEXTRON AVIATION INC. 525 MODEL2022-09-07current

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.