Narrative:

After takeoff from phx at approximately 600' afl, the minimum equipment bay smoke warning came on, accompanied by the master warning light and horn. A heat or smoke odor was detected in the cockpit. An emergency was declared and immediate return to phx initiated. On downwind leg the odor in the cockpit seemed to dissipate and the warning indications all went out. An uneventful landing was made.

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Original NASA ASRS Text

Title: EQUIPMENT BAY SMOKE WARNING RETURN LAND.

Narrative: AFTER TKOF FROM PHX AT APPROX 600' AFL, THE MINIMUM EQUIP BAY SMOKE WARNING CAME ON, ACCOMPANIED BY THE MASTER WARNING LIGHT AND HORN. A HEAT OR SMOKE ODOR WAS DETECTED IN THE COCKPIT. AN EMER WAS DECLARED AND IMMEDIATE RETURN TO PHX INITIATED. ON DOWNWIND LEG THE ODOR IN THE COCKPIT SEEMED TO DISSIPATE AND THE WARNING INDICATIONS ALL WENT OUT. AN UNEVENTFUL LNDG WAS MADE.

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.