The U.S. aircraft register, updated daily
Parts

Stc Installation

No failure report names the stc installation. 5 FAA approvals let 2 companies make a replacement stc installation, Teledyne Battery Products holding the most (4).

Approved replacement parts 5 parts manufacturer approvals

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

For these models most: Piper PA-42 (1), Piper PA-31 Navajo and Chieftain (1), Leonardo Spa AW139 (1), Cessna 650 Citation III, VI and VII (1), Cessna 525 CitationJet (CJ series) (1), Beechcraft B300 King Air 350 (1), Beechcraft B200 King Air B200 (1), Beechcraft A200 (1), Agusta Spa AB139 (1).

MakerPartReplacesFitsGrantedStatus
Sterling HelicopterSTC Installation Kit ST-21-520Modification Part(s) - KitLeonardo S.p.a. AW139, AB1392026-04-16current
Teledyne Battery ProductsSTC Installation Kit MDL 525-05Modification Part Modification PartCessna 525/525A Series2001-10-09current
Teledyne Battery ProductsSTC Installation Kit MDL 0201-06Modification PartCessna 650 Series2001-08-07current
Teledyne Battery ProductsSTC Installation Kit MDL 1728-2Modification PartPiper PA-31T, -31T1, -31T22001-05-31current
Teledyne Battery ProductsSTC Installation Kit MDL 1016-7Modification PartRaytheon 200 (A100-1(U-21), 200C, 200CT2001-04-25current

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.