Cessna Citation Sovereign (C680)
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor
Flight Crew Last 90 Days 45; Flight Crew Total 12040; Flight Crew Type 2786
Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Flight Crew Overcame Equipment Problem; Flight Crew Returned To Departure Airport; General Evacuated; General Declared Emergency
Aircraft
During our first segment climb; we noticed smoke filling the cabin and cockpit. The pilot not flying viewed the rear cabin and noticed the smoke/haze became thicker towards the lavatory section. The passengers confirmed the direction smoke was coming from by pointing up and to the rear. We declared an emergency and made an immediate return. On the downwind the pilot not flying; in the right seat; shut off the APU and noticed smoke still coming from my sidewall air vents. He then shut off the Left Hand Bleed Valve and confirmed smoke stoppage from the Captain's sidewall air vents. With the aircraft in a left base for the runway with a reduced power setting and bleed air valve off; the smoke began to dissipate. The aircraft landed normally and an evacuation was performed on the taxiway. None of the two crew and five passengers were injured. The entire event lasted 5-6 minutes.
The flight crew of a CE-680 declared an emergency and returned to their departure airport when smoke and/or haze filled the cabin and cockpit shortly after takeoff. Shortly before landing the pilot not flying closed an unspecified Left Side Bleed Valve and the smoke started to dissipate. The aircraft was evacuated on a taxiway after exiting the runway.