The U.S. aircraft register, updated daily
Parts

Application Data

No failure report names the application data. 2 FAA approvals let 1 company make a replacement application data, Electrosystems 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 application data and sell it as an approved part for the models named. These are the companies holding such approvals for a application data:

MakerPartReplacesFitsGrantedStatus
Electrosystems INCApplication Data - Lead and Harness A3-1Bendix 10-720645-2 or 10-821474-2Textron Lycoming O-320-A1A, -A1B, -A2A1996-09-12current
Electrosystems INCApplication Data - Lead and Harness A3-4Bendix 10-720505-1 or 10-821481-2Textron Lycoming LIO-360-A1H6, C1E6, O-360-A1F1996-09-12current

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.