B757-200
Flight Crew Air Transport Pilot (ATP)
Troubleshooting; Training / Qualification; Human-Machine Interface
Aircraft Equipment Problem Less Severe
Flight Crew Took Evasive Action; Flight Crew Diverted; Flight Crew Landed in Emergency Condition; General Maintenance Action; General Declared Emergency
Aircraft
Center Hydraulic Low Quantity indication down to .23; accomplished QRH resulting in turning off Center pumps. Later R-Yaw Damper light came on. QRH had us turn OFF R-Yaw Damper. Declared Emergency as per FOM and had emergency equipment standing by. Short final turned Center Hydraulic back on as per QRH. Landing normal; rollout normal; released emergency trucks and taxied to gate with a truck to follow. Inspection found no leak a potential transmitter or indication problem.
A B757's Center Hydraulic Quantity gauge dropped to .23 so the QRH was completed; an emergency declared and the flight diverted. A faulty Quantity Gauge was found.