The U.S. aircraft register, updated daily
Parts

Airstairs Backup

No failure report names the airstairs backup. 4 FAA approvals let 1 company make a replacement airstairs backup, Woodward Mpc holding the most (4).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Embraer ERJ 190 E190 and E195 (4), Embraer ERJ 170 E170 and E175 (4).

MakerPartReplacesFitsGrantedStatus
Woodward MpcAirstairs Backup Actuator 2R2208BEmbraer P/N 2R2208BEmbraer ERJ 170-100 LR, ERJ 170-100 STD, ERJ...2011-09-07current
Woodward MpcAirstairs Backup System Battery and Charger Assembly 292217DEmbraer P/N 292217DEmbraer ERJ 170-100 LR, ERJ 190-100 IGW2011-09-07current
Woodward MpcAirstairs Backup System Battery and Charger Assembly 292217DEmbraer P/N 292217DEmbraer ERJ 170-100 LR, ERJ 190-100 IGW2011-04-10current
Woodward MpcAirstairs Backup Actuator 2R2208BEmbraer P/N 2R2208BEmbraer 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.