Narrative:

Climbing out on radar vectors to SID. Passenger noted smoke in the cabin. It was verified visually by both pilots. Ram air and emergency pressurization were selected; ATC was notified; the follow-up checklist was accomplished for smoke and fume evacuate/evacuation; and the aircraft returned to sat for an uneventful landing. The smoke immediately dissipated with no further inflow. Maintenance investigated and discovered both manual temperature control valves; in the aft baggage compartment; were set to full hot. These control valves override the inputs in the remainder of the system; so the pilots had no control of the air being sent through the duct system; and the ducts had overheated and were creating the smoke. No damage was discovered; the valves were reset to their center/off position; the system was ground-checked; and a subsequent flight was accomplished with no problems.

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Original NASA ASRS Text

Title: GULFSTREAM II (G1159) FLT CREW HAS SMOKE AND FUMES IN CABIN AFTER TKOF AND RETURNS FOR LNDG.

Narrative: CLBING OUT ON RADAR VECTORS TO SID. PAX NOTED SMOKE IN THE CABIN. IT WAS VERIFIED VISUALLY BY BOTH PLTS. RAM AIR AND EMER PRESSURIZATION WERE SELECTED; ATC WAS NOTIFIED; THE FOLLOW-UP CHKLIST WAS ACCOMPLISHED FOR SMOKE AND FUME EVAC; AND THE ACFT RETURNED TO SAT FOR AN UNEVENTFUL LNDG. THE SMOKE IMMEDIATELY DISSIPATED WITH NO FURTHER INFLOW. MAINT INVESTIGATED AND DISCOVERED BOTH MANUAL TEMP CTL VALVES; IN THE AFT BAGGAGE COMPARTMENT; WERE SET TO FULL HOT. THESE CTL VALVES OVERRIDE THE INPUTS IN THE REMAINDER OF THE SYS; SO THE PLTS HAD NO CTL OF THE AIR BEING SENT THROUGH THE DUCT SYS; AND THE DUCTS HAD OVERHEATED AND WERE CREATING THE SMOKE. NO DAMAGE WAS DISCOVERED; THE VALVES WERE RESET TO THEIR CTR/OFF POS; THE SYS WAS GND-CHKED; AND A SUBSEQUENT FLT WAS ACCOMPLISHED WITH NO PROBS.

Data retrieved from NASA's ASRS site as of January 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.