The U.S. aircraft register, updated daily
Parts

Installation Duct

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

For these models most: Bombardier DHC-8 Dash 8 and Q400 (1).

MakerPartReplacesFitsGrantedStatus
Arrowhead ProductsInstallation Kit P3.0 Duct 14400-1-1014400-1-10Bombardier DHC-8-400 Series2009-07-13current

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.