The U.S. aircraft register, updated daily
Parts

Switch Engine

No failure report names the switch engine. 2 FAA approvals let 1 company make a replacement switch engine, Esterline Mason 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 switch engine and sell it as an approved part for the models named. These are the companies holding such approvals for a switch engine:

MakerPartReplacesFitsGrantedStatus
Esterline MasonSwitch Engine ECU 4ML45E2-2N2D4ML45E2-2N2DBombardier, Inc. DCH-8-100 Dash 8 Series 100...2007-08-14current
Esterline MasonSwitch Engine ECU 4ML45E2-4N4D4ML45E2-4N4DBombardier, Inc. DCH-8-100 Dash 8 Series 100...2007-08-14current

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.