The U.S. aircraft register, updated daily
Parts

Switch Leading

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

For these models most: Boeing 747 (1).

MakerPartReplacesFitsGrantedStatus
Woodward MpcSwitch-Leading Edge Failure Indication 292219AS256U001-9Boeing 747-8F Series2011-10-09current

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.