EMB ERJ 170/175 ER/LR
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Total 6163; Flight Crew Type 735
Situational Awareness
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Flight Crew Overcame Equipment Problem; General Maintenance Action
Aircraft; Human Factors
We received the dirty sock smell after takeoff; which dissipated by the time we reached 10;000 feet. The odor appeared again just prior to landing during the final 1;000 feet of the approach to landing. The flight attendants and a commuting pilot in the cabin did not notice any unusual odors. After the flight; the Captain contacted Maintenance Control and they deferred PACK 1. On the next flight (part 2 of a turn in the same aircraft); we did not notice any odors. Suggestions: Having had five such dirty-sock-smell fume events; I've noticed what appears to be a correlation between these incidents and the airplane having had a recent service check and/or having a high oil level. In this case; the oil level was at 11.1 on each engine after shutdown. After shutdown on the subsequent flight (during which PACK 1 was already deferred); the oil levels were at 10.6 on engine 1 and 10.5 on engine 2. My observation is that the when the oil is over-serviced; it is more likely to contaminate the bleed air. Perhaps servicing the oil to a lower level could reduce the number of fume events at our airline. Nevertheless; the company owes the employees an update on the investigation into the cause of these hazardous incidents.
EMB-170 First Officer reported a 'dirty socks smell' after takeoff; and during approach to landing.