The U.S. aircraft register, updated daily
Parts

Model Header

No failure report names the model header. 2 FAA approvals let 2 companies make a replacement model header, Midwest Aircraft Products Company 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 model header and sell it as an approved part for the models named. These are the companies holding such approvals for a model header:

For these models most: Boeing 737 (2).

MakerPartReplacesFitsGrantedStatus
Midwest Aircraft Prod COModel 1001 Header Assembly D3010-10Modification PartBoeing 737-3002004-07-13current
Midwest Aircraft Products CompanyModel 1001 Header Assembly D3010-10Modification PartBoeing 737-3002004-07-13current

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.