Narrative:

After engine start and during taxi both the captain and first officer smelled a strong odor of dirty socks in the cockpit. We started to feel light headed and nauseous. I donned my oxygen mask. I checked with the flight attendants and they did not smell anything. We returned to the gate. We went to the hospital.

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Original NASA ASRS Text

Title: B737 flight crew reported a dirty sock smell after beginning to taxi for takeoff. The flight returned to the gate and the pilots were transported to a hospital.

Narrative: After engine start and during taxi both the Captain and First Officer smelled a strong odor of dirty socks in the cockpit. We started to feel light headed and nauseous. I donned my oxygen mask. I checked with the flight attendants and they did not smell anything. We returned to the gate. We went to the hospital.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.