What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Helicopter was making a low level descending turn into the wind when it struck hilly terrain and rolled over. (.19) on October 13, 1998, at 1615 mountain daylight time, a Schweizer 269C, N151KC, oeprated by a private pilot, collided with the terrain following a loss of control while maneuvering over open land 15 miles east of Oshkosh, Nebraska. The private pilot was not injured. The helicopter was substantially damaged. The 14 CFR part 91 flight was operating in visual meteorological conditions without a flight plan. The flight originated from Oshkosh, Nebraska, at 1530 MDT. (.4) the pilot was checking cattle while flying over 'choppy' terrain at an altitude of 150 to 175 feet above the ground. He was flying to the southeast then made a turn to the northeast (downwind) and had just started a turn back to the southeast when the helicopter began to settle. The helicopter impacted uneven terrain and rolled over to the left. The pilot reported the winds were from the south southeast at 20 knots with slight gusts at the time of the accident.
As the FAA filed it
HELICOPTER WAS MAKING A LOW LEVEL DESCENDING TURN INTO THE WIND WHEN IT STRUCK HILLY TERRAIN AND ROLLED OVER. (.19) ON OCTOBER 13, 1998, AT 1615 MOUNTAIN DAYLIGHT TIME, A SCHWEIZER 269C, N151KC, OEPRATED BY A PRIVATE PILOT, COLLIDED WITH THE TERRAIN FOLLOWING A LOSS OF CONTROL WHILE MANEUVERING OVER OPEN LAND 15 MILES EAST OF OSHKOSH, NEBRASKA. THE PRIVATE PILOT WAS NOT INJURED. THE HELICOPTER WAS SUBSTANTIALLY DAMAGED. THE 14 CFR PART 91 FLIGHT WAS OPERATING IN VISUAL METEOROLOGICAL CONDITIONS WITHOUT A FLIGHT PLAN. THE FLIGHT ORIGINATED FROM OSHKOSH, NEBRASKA, AT 1530 MDT. (.4) THE PILOT WAS CHECKING CATTLE WHILE FLYING OVER 'CHOPPY' TERRAIN AT AN ALTITUDE OF 150 TO 175 FEET ABOVE THE GROUND. HE WAS FLYING TO THE SOUTHEAST THEN MADE A TURN TO THE NORTHEAST (DOWNWIND) AND HAD JUST STARTED A TURN BACK TO THE SOUTHEAST WHEN THE HELICOPTER BEGAN TO SETTLE. THE HELICOPTER IMPACTED UNEVEN TERRAIN AND ROLLED OVER TO THE LEFT. THE PILOT REPORTED THE WINDS WERE FROM THE SOUTH SOUTHEAST AT 20 KNOTS WITH SLIGHT GUSTS AT THE TIME OF THE ACCIDENT.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.