What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On March 8, 2011 at approximately 11:40 eastern standard time, a Dehavilland DCH-6-100, N157KM, owned by desert sand aircraft leasing co. inc. while on a post maintenance flight, crashed under unkown circumstances after takeoff from Clayton county airport-Tara field, Hampton, GA. Fataly injuring both the pilot and the mechanic on board . Visual meteorolgical conditions prevailed. No flight plan had been filed for the local maintenance test flight being conductedunder part 91, following the replacement of both PT6A-20, 550 HP engines with PT6A-27, 680 HP engines. Witness's stated they heard what sounded like an abrupt pitch change and saw the aircraft yaw to the left. The yaw was corrected and the aircraft continued in straight flight heading wsw away from the approach end of the runway at an altitude of 800 to 1000 feet. Witness's heard the prop make the same sound as before and saw the aircraft snap roll to the right and spin into the ground.
As the FAA filed it
ON MARCH 8, 2011 AT APPROXIMATELY 11:40 EASTERN STANDARD TIME, A DEHAVILLAND DCH-6-100, N157KM, OWNED BY DESERT SAND AIRCRAFT LEASING CO. INC. WHILE ON A POST MAINTENANCE FLIGHT, CRASHED UNDER UNKOWN CIRCUMSTANCES AFTER TAKEOFF FROM CLAYTON COUNTY AIRPORT-TARA FIELD, HAMPTON, GA. FATALY INJURING BOTH THE PILOT AND THE MECHANIC ON BOARD . VISUAL METEOROLGICAL CONDITIONS PREVAILED. NO FLIGHT PLAN HAD BEEN FILED FOR THE LOCAL MAINTENANCE TEST FLIGHT BEING CONDUCTEDUNDER PART 91, FOLLOWING THE REPLACEMENT OF BOTH PT6A-20, 550 HP ENGINES WITH PT6A-27, 680 HP ENGINES. WITNESS'S STATED THEY HEARD WHAT SOUNDED LIKE AN ABRUPT PITCH CHANGE AND SAW THE AIRCRAFT YAW TO THE LEFT. THE YAW WAS CORRECTED AND THE AIRCRAFT CONTINUED IN STRAIGHT FLIGHT HEADING WSW AWAY FROM THE APPROACH END OF THE RUNWAY AT AN ALTITUDE OF 800 TO 1000 FEET. WITNESS'S HEARD THE PROP MAKE THE SAME SOUND AS BEFORE AND SAW THE AIRCRAFT SNAP ROLL TO THE RIGHT AND SPIN INTO THE GROUND.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.