The U.S. aircraft register, updated daily
Parts

Preheat

No failure report names the preheat. 8 FAA approvals let 1 company make a replacement preheat, Hartzell Propeller LLC holding the most (8).

Approved replacement parts 8 parts manufacturer approvals

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

For these models most: Costruzioni Aeronautiche Tecna P2012 (2), Boeing 737 (2).

MakerPartReplacesFitsGrantedStatus
Hartzell Propeller LLCPreheat Kit TA3370-2Modification ArticleConstruzioni... P2012 Traveller2025-02-17current
Hartzell Propeller LLCPreheat Kit TA3370-1Modification ArticleConstruzioni... P2012 Traveller2025-02-17current
Hartzell Propeller LLCPreheat Kit TA3277-1Modification ArticleThe Boeing Company 737-100 Series, 737-200 Series,...2025-02-04current
Hartzell Propeller LLCPreheat Kit TA3277-2Modification ArticleThe Boeing Company 737-100 Series, 737-200 Series,...2025-02-04current
Hartzell Propeller LLCPreheat Kit TA3123-1Modification ArticleDaher Aircraft Design LLC Kodiak 1002024-04-01current
Hartzell Propeller LLCPreheat Kit TA3123-2Modification ArticleDaher Aircraft Design LLC Kodiak 1002024-04-01current
Hartzell Propeller LLCPreheat Kit TA2955-2Modification ArticleDe Havilland... DHC-8-400 Series2024-02-06current
Hartzell Propeller LLCPreheat Kit TA2955-1Modification ArticleDe Havilland... DHC-8-400 Series2024-02-06current

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.