The U.S. aircraft register, updated daily
Parts

Hyd Pwr

0 failure reports named the hyd pwr in the last ten years, 2 since 1995. The reports call it "hyd pwr pack", "hyd pwr panel".

Reports by year

000111199511998
Reports by year, as a table
reports
19951
19981

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.