The U.S. aircraft register, updated daily
Parts

Alteration

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

For these models most: Boeing 737 (1).

MakerPartReplacesFitsGrantedStatus
Shadin AvionicsAlteration Kit, SCDS MLG Sensor Instl, B737 Series PL11435-KTPL11435-KTThe Boeing Company 737-600 Series, 737-700 Series,...2022-11-29current

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.