The U.S. aircraft register, updated daily
Parts

Split Window

No failure report names the split window. 2 FAA approvals let 1 company make a replacement split window, Measure Tech INC holding the most (2).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Boeing 737 (2), Boeing 717 (1).

MakerPartReplacesFitsGrantedStatus
Measure Tech INCSplit Window Pushbutton Switch 90-48401-6MT90-48401-6The Boeing Company 737-700 Series, 737-800 Series,...2025-09-08current
Measure Tech INCSplit Window Pushbutton Switch 90-48401-6MT90-48401-6The Boeing Company 737-700 Series, 737-800 Series,...2023-07-11current

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.