The U.S. aircraft register, updated daily
Parts

Spring Plate

No failure report names the spring plate. 5 FAA approvals let 4 companies make a replacement spring plate, Balloonacy LTD LLC holding the most (2).

Approved replacement parts 5 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a spring plate and sell it as an approved part for the models named. These are the companies holding such approvals for a spring plate:

For these models most: Piper PA-31 Navajo and Chieftain (2).

MakerPartReplacesFitsGrantedStatus
Mike Jones Aircraft Sales, INC.Spring Plate 66000-15Modification PartPiper PA-31, PA-31P, PA-31-3252018-01-08current
Superior Air Parts INCSpring Plate SL14995P/N LW-14995, P/N LW-13428, P/N LW-12273, P/N 68517Lycoming Engines O-320, -A1A, -A1B2014-09-17current
Balloonacy LTD LLCSpring Plate, Single Burner ARP5246352463Aerostar Intl, Inc. All series2013-02-19current
Balloonacy LTD LLCSpring Plate, ELS Burner ARP5246652466Aerostar Intl, Inc. Aerostar, ELS2013-02-19current
Pma LLCSpring Plate 66000-15Modification PartPiper PA-31, PA-31P, PA-3252012-10-23current

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.