The U.S. aircraft register, updated daily
Parts

Ultra Interface

No failure report names the ultra interface. 2 FAA approvals let 1 company make a replacement ultra interface, Pratt & Whitney Engine Services INC 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 ultra interface and sell it as an approved part for the models named. These are the companies holding such approvals for a ultra interface:

For these models most: Bombardier DHC-8 Dash 8 and Q400 (2).

MakerPartReplacesFitsGrantedStatus
Pratt & Whitney Engine Services INCUltra Interface Box Kit FAST-K-168-1Modification PartBombardier DHC-8-400 SERIES2017-01-31current
Pratt & Whitney Engine Services INCUltra Interface Box Retrofit Kit FAST-K-168-2Modification PartBombardier DHC-8-400 SERIES2017-01-31current

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.