What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot reported smoke in cockpit during climb out from bhb at 5000 ft. the pilot noticed a slight odor and continued to climb. At approximately 65OO ft. the pilot turned his head to the rear and noticed a haze in cabin. F/o obtained clearance back to bhb and a rapid descent was made back to bhb. Level of odor diminished with the throttle reduction. Landing was made without incident. Source of smoke is under investigation.
As the FAA filed it
(-23) PILOT REPORTED SMOKE IN COCKPIT DURING CLIMB OUT FROM BHB AT 5000 FT. THE PILOT NOTICED A SLIGHT ODOR AND CONTINUED TO CLIMB. AT APPROXIMATELY 65OO FT. THE PILOT TURNED HIS HEAD TO THE REAR AND NOTICED A HAZE IN CABIN. F/O OBTAINED CLEARANCE BACK TO BHB AND A RAPID DESCENT WAS MADE BACK TO BHB. LEVEL OF ODOR DIMINISHED WITH THE THROTTLE REDUCTION. LANDING WAS MADE WITHOUT INCIDENT. SOURCE OF SMOKE IS UNDER INVESTIGATION.