The U.S. aircraft register, updated daily
Parts

Epo

0 failure reports named the epo in the last ten years, 12 since 1997. The reports call it "epo assy", "epo assembly".

Reports by year

025810119971102001
Reports by year, as a table
reports
19971
19991
200110

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.