Narrative:

While nearing the end of our climb phase I (the PIC acting as first officer giving IOE) detected an odor of burning plastic. The IOE captain confirmed he also smelled this odor. We next noticed a very light haze in the air indicating smoke, in both cockpit and cabin. We immediately requested from the center controller a return to our departure field (jhw) and asked for a descent. We ran the emergency checklist for environmental smoke in the cabin and cockpit. This included deploying passenger oxygen. We (the crew) donned our oxygen after a brief explanation to the passenger about the situation and the use of the oxygen. The amount of smoke and smell did not increase but stayed the same throughout this entire occurrence. I would describe the amount as 'little' but noticeable. We landed without incident and did not declare an emergency. Of the 17 passenger on board only 3 passenger felt the need to use oxygen. There were no injuries or damage involved. We continued the flight about 1 1/2 hours later with a new airplane.

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Original NASA ASRS Text

Title: BE1900D FLC HAS SMOKE ODOR AND HAZE IN COCKPIT AND CABIN. REQUEST RETURN LAND FROM CTR. OXYGEN USED BY CREW AND SOME PAX.

Narrative: WHILE NEARING THE END OF OUR CLB PHASE I (THE PIC ACTING AS FO GIVING IOE) DETECTED AN ODOR OF BURNING PLASTIC. THE IOE CAPT CONFIRMED HE ALSO SMELLED THIS ODOR. WE NEXT NOTICED A VERY LIGHT HAZE IN THE AIR INDICATING SMOKE, IN BOTH COCKPIT AND CABIN. WE IMMEDIATELY REQUESTED FROM THE CTR CTLR A RETURN TO OUR DEP FIELD (JHW) AND ASKED FOR A DSCNT. WE RAN THE EMER CHKLIST FOR ENVIRONMENTAL SMOKE IN THE CABIN AND COCKPIT. THIS INCLUDED DEPLOYING PAX OXYGEN. WE (THE CREW) DONNED OUR OXYGEN AFTER A BRIEF EXPLANATION TO THE PAX ABOUT THE SIT AND THE USE OF THE OXYGEN. THE AMOUNT OF SMOKE AND SMELL DID NOT INCREASE BUT STAYED THE SAME THROUGHOUT THIS ENTIRE OCCURRENCE. I WOULD DESCRIBE THE AMOUNT AS 'LITTLE' BUT NOTICEABLE. WE LANDED WITHOUT INCIDENT AND DID NOT DECLARE AN EMER. OF THE 17 PAX ON BOARD ONLY 3 PAX FELT THE NEED TO USE OXYGEN. THERE WERE NO INJURIES OR DAMAGE INVOLVED. WE CONTINUED THE FLT ABOUT 1 1/2 HRS LATER WITH A NEW AIRPLANE.

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.