The U.S. aircraft register, updated daily
Parts

Bottom Passenger

No failure report names the bottom passenger. 1 FAA approvals let 1 company make a replacement bottom passenger, Jab Aero CORP 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 bottom passenger and sell it as an approved part for the models named. These are the companies holding such approvals for a bottom passenger:

For these models most: Bombardier DHC-8 Dash 8 and Q400 (1).

MakerPartReplacesFitsGrantedStatus
Jab Aero CORPBottom Passenger 2521-2985JModificationBombardier DHC-8-300 series2009-03-15current

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.