Barometric Setting
No failure report names the barometric setting. 2 FAA approvals let 1 company make a replacement barometric setting, Smiths Industries/Aerospace 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 barometric setting and sell it as an approved part for the models named. These are the companies holding such approvals for a barometric setting:
For these models most: Boeing 737 (2), Boeing 727 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Smiths Industries/Aerospace | Barometric Setting Potentiometer 2013-01-1 | Boeing 10-61441-6 | Boeing 727-200, 737-200, -400 Series | 1992-11-01 | current |
| Smiths Industries/Aerospace | Barometric Setting Potentiometer 2013-02-1 | Boeing 10-61441-7 | Boeing 727-200, 737-200, -400 Series | 1992-11-01 | current |
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.