The U.S. aircraft register, updated daily
Parts

Airspeed Adapter

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

MakerPartReplacesFitsGrantedStatus
Troll Avionics INCAirspeed Adapter 4000007Modification PartBritish Aerospace 3101, 31011993-11-17current

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.