The U.S. aircraft register, updated daily
Parts

Io Engine

No failure report names the io engine. 1 FAA approvals let 1 company make a replacement io engine, General Aviation Modifications 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 io engine and sell it as an approved part for the models named. These are the companies holding such approvals for a io engine:

For these models most: Beechcraft V35 Bonanza (1), Beechcraft G33 (1), Beechcraft F33 Bonanza (1), Beechcraft E33 (1), Beechcraft A36 Bonanza (1), Beechcraft 36 Bonanza (1), Beechcraft 35 Bonanza and Debonair (1).

MakerPartReplacesFitsGrantedStatus
General Aviation Modifications INCIO-550B Engine Kit BON-550BNAIO-520B, IO-520BA, IO-520BB. IO-470N (G33 only)Beech Raytheon) (S35, V35, V35A2002-01-23current

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.