B757-200
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Executed Go Around / Missed Approach; Flight Crew Requested ATC Assistance / Clarification; General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
When lowering gear left hydraulic quantity went to .14 and PTU did not operate. We discontinued approach and ran checklists. Requested priority handling; complied with QRH and landed. Hydraulic system leak in left landing gear circuit.
First Officer reported a go around was caused by a hydraulic leak. The flight crew ran the QRH and returned to make a precautionary landing.