The U.S. aircraft register, updated daily
Parts

Seat Mod

No failure report names the seat mod. 4 FAA approvals let 3 companies make a replacement seat mod, Imagik International Corporation holding the most (2).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Boeing 747 (2), Boeing 737 (2).

MakerPartReplacesFitsGrantedStatus
Imagik International CorporationB737-700 No-Seat Mod B737-USB-100-05Modification PartThe Boeing Company 737-700 series, 737-800 series2023-10-25current
Imagik International CorporationB737-800 No-Seat Mod B737-USB-100-06Modification PartThe Boeing Company 737-700 series, 737-800 series2023-10-25current
Panasonic Avionics CorporationSeat Mod Kit Parts List Q00166-02Modification PartBoeing 747-4002015-04-19current
Matsushita Avionics Systems CORPSeat Mod Kit Parts List Q00166-02Modification PartBoeing 747-4002000-01-13current

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.