The U.S. aircraft register, updated daily
Parts

Cabin Heating

No failure report names the cabin heating. 1 FAA approvals let 1 company make a replacement cabin heating, Aerometals holding the most (1).

Approved replacement parts 1 parts manufacturer approvals

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

For these models most: Md Helicopters Llc 369 (1).

MakerPartReplacesFitsGrantedStatus
AerometalsCabin Heating Duct Assy MDL-AMC-031Modification PartMDHI Hughes) (369HM, 369HS, 369D2015-01-21current

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.