The U.S. aircraft register, updated daily
Parts

Decoupler Shaft

No failure report names the decoupler shaft. 3 FAA approvals let 1 company make a replacement decoupler shaft, Aviatron INC holding the most (3).

Approved replacement parts 3 parts manufacturer approvals

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

For these models most: Embraer EMB-145 ERJ 145 (2), Embraer EMB-135 ERJ 135 and Legacy (2), Embraer ERJ 190 E190 and E195 (1), Embraer ERJ 170 E170 and E175 (1), Bombardier CL-600 Challenger and CRJ (1).

MakerPartReplacesFitsGrantedStatus
Aviatron INCDecoupler Shaft Plug AVUS3507439-2-93507439-2-9Embraer S.A. EMB-145ER, EMB-145LR, EMB-135KL2023-03-28current
Aviatron INCDecoupler Shaft AVUS3507439-2-23507439-2-2Embraer S.A. EMB-145ER, EMB-145LR, EMB-135KL2023-03-28current
Aviatron INCDecoupler Shaft AVUS3507407-13507407-1Bombardier, Inc. CL-600-2C10 (RJ-700, 701, 702)2013-01-13current

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.