B757 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 117; Flight Crew Total 2139.65; Flight Crew Type 1890.92
Situational Awareness
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem; General Maintenance Action
Aircraft
On takeoff until approximately 22;000 feet and on approach starting around 18;000 feet to landing; there was a very strong dirty sock/gym sock smell. This is consistent with the description of pyrolyzed oil entering the ECS system and is at the times that this event would normally occur. Maintenance was notified; and a description of the smell was notated on the appropriate fume form.
B757 Captain reported a 'dirty sock' odor during climb which dissipated and resumed on initial approach.