The U.S. aircraft register, updated daily
Parts

Psu Dual

No failure report names the psu dual. 2 FAA approvals let 2 companies make a replacement psu dual, Puritan Bennett Aero Sys - Wemac holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

MakerPartReplacesFitsGrantedStatus
B/E Aerospace INCPSU Dual 4050-04Hunting Aviation 65-01-004BAE Systems Operations) Limited (41011998-05-27current
Puritan Bennett Aero Sys - WemacPSU Dual 4050-04Hunting Aviation 65-01-004BAE Systems Operations) Limited (41011995-04-16current

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.