What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On may 10, 2004, about 1230 eastern daylight time, a Beech A-36, N3670S, registered to and operated by a private individual as a title 14 CFR part 91 maintenance test flight, incurred a heavy vibration during climb and cruise, in the vicinity of Daytona Beach, FL. Visual meteorological conditions prevailed, and no flight plan was filed. The airline transport pilot and one passenger were not injured and the airplane was not damaged. After checking various items the mechanic notice that one of the propeller blades appeared to be in a negative pitch and when moved, it revolved freely in the hub.
As the FAA filed it
(-23) ON MAY 10, 2004, ABOUT 1230 EASTERN DAYLIGHT TIME, A BEECH A-36, N3670S, REGISTERED TO AND OPERATED BY A PRIVATE INDIVIDUAL AS A TITLE 14 CFR PART 91 MAINTENANCE TEST FLIGHT, INCURRED A HEAVY VIBRATION DURING CLIMB AND CRUISE, IN THE VICINITY OF DAYTONA BEACH, FL. VISUAL METEOROLOGICAL CONDITIONS PREVAILED, AND NO FLIGHT PLAN WAS FILED. THE AIRLINE TRANSPORT PILOT AND ONE PASSENGER WERE NOT INJURED AND THE AIRPLANE WAS NOT DAMAGED. AFTER CHECKING VARIOUS ITEMS THE MECHANIC NOTICE THAT ONE OF THE PROPELLER BLADES APPEARED TO BE IN A NEGATIVE PITCH AND WHEN MOVED, IT REVOLVED FREELY IN THE HUB.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.