Narrative:

Upon departure when airflows were open to pressurize J-31, smoke began to fill cockpit and cabin. Turned airflows off and depressuirzed cabin. Ran emergency smoke in cabin/flight deck checklist. This action helped to clear out some of the smoke. Had to fly for additional 30 mins to burn off gas to prevent overweight landing. Landed without incident. Tower had declared an emergency for us.

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Original NASA ASRS Text

Title: A LTT EXPERIENCED SMOKE IN THE COCKPIT AND CABIN IMMEDIATELY AFTER TKOF. DECLARED EMER AND RETURNED TO THE FIELD.

Narrative: UPON DEP WHEN AIRFLOWS WERE OPEN TO PRESSURIZE J-31, SMOKE BEGAN TO FILL COCKPIT AND CABIN. TURNED AIRFLOWS OFF AND DEPRESSUIRZED CABIN. RAN EMER SMOKE IN CABIN/FLT DECK CHKLIST. THIS ACTION HELPED TO CLR OUT SOME OF THE SMOKE. HAD TO FLY FOR ADDITIONAL 30 MINS TO BURN OFF GAS TO PREVENT OVERWT LNDG. LANDED WITHOUT INCIDENT. TWR HAD DECLARED AN EMER FOR US.

Data retrieved from NASA's ASRS site as of July 2007 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.