The U.S. aircraft register, updated daily
Parts

Ps Line

0 failure reports named the ps line in the last ten years, 16 since 1995. The reports call it "ps4 line", "ps 4 line", "ps2 line".

Reports by year

02346619956221998
Reports by year, as a table
reports
19956
19966
19972
19982

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.