The U.S. aircraft register, updated daily
Parts

Seam Number

No failure report names the seam number. 1 FAA approvals let 1 company make a replacement seam number, Superiaire Technologies 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 seam number and sell it as an approved part for the models named. These are the companies holding such approvals for a seam number:

MakerPartReplacesFitsGrantedStatus
Superiaire TechnologiesSeam Number Tag P/N SAT-53241P/N 53241Aerostar International Inc. all models2014-09-10current

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.