Narrative:

On takeoff; upon application of the main air valves to the open position; the cockpit and cabin immediately filled with thick; heavy; billowing smoke with an unusual oily smell. The main air valves were immediately turned back to off. Although there were no passengers on board; I did look back into the cabin momentarily to see if there was smoke there as well; and it was so thick; I could barely see the lavatory door.the captain took control of the aircraft and we returned to the airport immediately. Although we were over landing weight; my captain not only displayed a very high degree of professionalism; but exemplary airmanship as well. He performed the smoothest touchdown I've ever experienced in 42 years of flying. I consider myself lucky to have been paired with this man; as I truly believe he saved not only his life; but mine as well. Not to mention a company asset of extremely high intrinsic value.

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Original NASA ASRS Text

Title: Hawker 800 flight crew reported heavy smoke in the cockpit and cabin shortly after takeoff. The flight returned to point of origin.

Narrative: On takeoff; upon application of the main air valves to the open position; the cockpit and cabin immediately filled with thick; heavy; billowing smoke with an unusual oily smell. The main air valves were immediately turned back to off. Although there were no passengers on board; I did look back into the cabin momentarily to see if there was smoke there as well; and it was so thick; I could barely see the lavatory door.The Captain took control of the aircraft and we returned to the airport immediately. Although we were over landing weight; my Captain not only displayed a very high degree of professionalism; but exemplary airmanship as well. He performed the smoothest touchdown I've ever experienced in 42 years of flying. I consider myself lucky to have been paired with this man; as I truly believe he saved not only his life; but mine as well. Not to mention a company asset of extremely high intrinsic value.

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.