Narrative:

Unintentionally departed with a cas message. After takeoff; tower reported seeing smoke trailing the aircraft. Turned downwind. Discussed options; and made a left hand traffic pattern; to overfly the departure runway. Tower reported that we were still trailing smoke. Made a left turn again; downwind; declared an emergency; and requested landing clearance and to have fire vehicles meet us at the end of the runway. An uneventful landing was made. ZZZ tower; and fire/rescue personnel did an outstanding job.

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Original NASA ASRS Text

Title: A DA 900 FLIGHT CREW TOOK OFF WITH A CAS MESSAGE; AND WERE ADVISED BY TOWER THEY WERE TRAILING SMOKE. THEY DECLARED AN EMERGENCY AND RETURNED TO LAND AT THEIR DEPARTURE AIRPORT.

Narrative: UNINTENTIONALLY DEPARTED WITH A CAS MESSAGE. AFTER TKOF; TWR RPTED SEEING SMOKE TRAILING THE ACFT. TURNED DOWNWIND. DISCUSSED OPTIONS; AND MADE A L HAND TFC PATTERN; TO OVERFLY THE DEP RWY. TWR RPTED THAT WE WERE STILL TRAILING SMOKE. MADE A L TURN AGAIN; DOWNWIND; DECLARED AN EMER; AND REQUESTED LNDG CLRNC AND TO HAVE FIRE VEHICLES MEET US AT THE END OF THE RWY. AN UNEVENTFUL LNDG WAS MADE. ZZZ TWR; AND FIRE/RESCUE PERSONNEL DID AN OUTSTANDING JOB.

Data retrieved from NASA's ASRS site as of May 2009 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.