A300
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Landed in Emergency Condition; General Maintenance Action
Aircraft
On gear extension gear did not come down. 3 reds position detent 1. Switched to position detent 2; still 3 reds. Recycled gear still 3 reds no gear door open indications either. Hydraulic systems normal. Accomplished a go-around at 2;000 MSL. Climbed to 4;000 feet. ECAM displayed 'Proc gravity gear ext.' First officer with QRH extended the gear using the crank. Got 3 greens with gear doors open. [Notified] ZZZ approach. Landed 08R and got towed in per QRH. Landing fuel 9.4.
A300 Captain reported landing gear extension failed resulting in manual gear extension.