The U.S. aircraft register, updated daily
Parts

Seating Module

No failure report names the seating module. 2 FAA approvals let 2 companies make a replacement seating module, Lifeport, LLC. holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Boeing 737 (2).

MakerPartReplacesFitsGrantedStatus
Lifeport, LLC.Seating Module MDL-870-00Modification PartsThe Boeing Company 737-700 Series2019-07-31current
Lifeport INCSeating Module MDL-870-00Modification partsThe Boeing Company 737-700 Series2010-03-11current

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.