The U.S. aircraft register, updated daily
Parts

Volt Series

No failure report names the volt series. 1 FAA approvals let 1 company make a replacement volt series, Precise Flight 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 volt series and sell it as an approved part for the models named. These are the companies holding such approvals for a volt series:

For these models most: Mooney M22 (1), Mooney M-20 (1).

MakerPartReplacesFitsGrantedStatus
Precise Flight INC12 Volt Series 100 Speedbrake System Inst. Dwg 540S001A, 540S003AModification PartMooney Aircraft M20B, C, E1991-10-17current

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.