The U.S. aircraft register, updated daily
Parts

Passenger Seats

No failure report names the passenger seats. 4 FAA approvals let 2 companies make a replacement passenger seats, Jaars INC holding the most (3).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Helio H-395 (3), Helio H-391 (3), Helio H-295 (3), Helio H-250 (3).

MakerPartReplacesFitsGrantedStatus
Jaars INCPassenger seats SK820431Modification partsHelio H-250, H-295, H-3912011-09-21current
Jaars INCPassenger seats SK820701Modification partHelio H-250, H-295, H-3912011-09-21current
Jaars INCPassenger seats SK839524Modification partHelio H-250, H-295, H-3912011-09-21current
Frakes Aviation17 Passenger Seats, Emergency Exit, and Floor Modification --Gulfstream G-731981-08-23current

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.