Commercial Fixed Wing
No Specific Anomaly Occurred All Types
General Maintenance Action
Equipment / Tooling; Procedure
During routine tire pressure checks; I noticed that most or all or the tire pressure gauges in (STA) are reading 20-30 psi high or low. The calibration process seems to be failing and possibly resulting in grossly over/under serviced aircraft tires. Rarely do we have a correct reading tire gauge as checked on master regulator near tool room. Also the master regulator calibration is subject to fault issues per tool room personnel.
Tire pressure test equipment was found to be reading incorrectly. The calibration system is in question.