B737 Undifferentiated or Other Model
Maintenance Airframe; Maintenance Powerplant
Time Pressure; Training / Qualification; Workload
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Work Refused
Equipment / Tooling; Aircraft; Manuals; Procedure
Crew Chief [at] ZZZ used a tool with expired calibration and altered calibration year to accomplish and close a Nose Landing Gear Shock Strut Fluid Check since the mechanics assigned could not accomplish the work due to expired calibration tooling. Crew Chief in ZZZ and this is the way he works. He goes to different airlines and borrow the tooling from [Company] with [Company] part number different from ours in the Aircraft Maintenance Manual. This is his way of working; also goes to [Company] to borrow calibrated tools.
Technician reported that an out of calibration borrowed tool with altered calibration date was used to conduct maintenance on an aircraft.