The U.S. aircraft register, updated daily
Parts

Automatic Propeller

No failure report names the automatic propeller. 2 FAA approvals let 1 company make a replacement automatic propeller, Airborne Electronics holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Beechcraft F35 (2), Beechcraft E35 (2), Beechcraft C35 (2), Beechcraft B35 (2), Beechcraft A35 (2), Beechcraft G35 (1), Beechcraft D35 (1).

MakerPartReplacesFitsGrantedStatus
Airborne ElectronicsAutomatic Propeller Control MDL 350AModification PartBeech Raytheon) (35, A35, B351998-05-21current
Airborne ElectronicsAutomatic Propeller Control MDL 35AModification PartBeech Raytheon) (35, A35, B351991-11-22current

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.