(a) Calibrate instruments for measuring pressure, temperature, and dewpointupon initial installation. Follow the instrument manufacturer's instructionsand use good engineering judgment to repeat the calibration, as follows:
CFR 40-1065.315-2014 history
2014CFR 40-1065.315-2014 Protection of Environment. Part1065:Engine-testing procedures. Section1065.315:Pressure, temperature, and dewpoint calibration.