Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Total 23870
Situational Awareness
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Flight Crew Returned To Gate; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
The aircraft was on terminal air conditioner for prior smoke/odor/fume event. After both engines started a 'dirty sock' type odor was noticed in the cockpit. The smell dissipated somewhat during initial taxi. The flight attendants did not notice any odor in the cabin. We continued the taxi; but when we were #1 for takeoff; the odor was still present. QRH procedure followed and returned to gate.
A319 Captain reported a return to gate after noticing 'dirty socks' odor during taxi for departure.