The U.S. aircraft register, updated daily
Parts

Primary Actuation

No failure report names the primary actuation. 2 FAA approvals let 1 company make a replacement primary actuation, Woodward Mpc 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 primary actuation and sell it as an approved part for the models named. These are the companies holding such approvals for a primary actuation:

For these models most: Embraer ERJ 190 E190 and E195 (2), Embraer ERJ 170 E170 and E175 (2).

MakerPartReplacesFitsGrantedStatus
Woodward MpcPrimary Actuation System 2R7218DEmbraer P/N 2R7218DEmbraer ERJ 170-100 LR, ERJ 170-100 STD, ERJ...2011-09-07current
Woodward MpcPrimary Actuation System 2R7218DEmbraer P/N 2R7218DEmbraer ERJ 170-100 LR, ERJ 170-100 STD, ERJ...2011-04-10current

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.