The U.S. aircraft register, updated daily
Parts

Cooling Effect

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

For these models most: Boeing 737 (2), Boeing 727 (2), Boeing 707 (2).

MakerPartReplacesFitsGrantedStatus
Fenwal Safety SystemsCooling Effect Detector 18801-5 260F18801-5 260FBoeing 707, 727, 7372004-11-23current
Fenwal Safety SystemsCooling Effect Detector 18801-5 380F18801-5 380FBoeing 707, 727, 7372004-11-23current

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.