REDDING, CA, USA
N8363Q
ROBINSON R-22
THE PILOT WAS LANDING THE HELICOPTER IN AN OPEN AREA ON THE NORTH SIDE OF A LAKE. THE LANDING AREA TERRAIN SLOPED DOWNWARD WITH TREES TO THE NORTH. ON THE INITIAL TOUCHDOWN, THE PILOT FELT THE LEFT SKID TOUCH UNEVEN TERRAIN. THE PILOT RAISED THE HELICOPTER TO A 2-FOOT HOVER. MOMENTS LATER, A GUST OF WIND STRUCK THE HELICOPTER. THE HELICOPTER BEGAN TO ROLL TO THE LEFT AND THE PILOT APPLIED COLLECTIVE AND CYCLIC INPUTS. THE HELICOPTER RESPONDED TO THE CONTROL INPUTS AND ROLLED TO THE RIGHT AND TRAVELED REARWARD UNTIL IT HIT A TREE. THE PILOT SAID THAT THE HELICOPTER DID NOT EXPERIENCE ANY PREIMPACT MECHANICAL MALFUNCTIONS OR FAILURES. GROUND WITNESSES CONFIRMED THE PILOT'S STATEMENT AND ALSO SAID THAT GUSTY WINDS EXISTED IN THE LANDING AREA, BUT NOT ON THE LAKE.
On May 21, 1995, at 1420 hours Pacific daylight time, a Robinson R-22 helicopter, N8363Q, collided with a tree near Greens Creek Campsite about 25 miles north of Redding, California. The pilot was completing a local visual flight rules personal flight. The helicopter, registered to and operated by a private individual, sustained substantial damage. The certificated commercial pilot and his passenger sustained minor injuries. Visual meteorological conditions prevailed. The flight originated from a houseboat at Shasta Lake at 1415 hours. National Transportation Safety Board investigators interviewed the pilot via a telephone on May 21, 1995. The pilot said that he departed the open area and intended to land at the Greens Creek Campsite. He said that the landing area sloped downward and that he landed the helicopter at the campsite, but did not fully lower the collective. He felt uncomfortable with the landing and then raised the helicopter to a hover. While the helicopter was hovering, a gust of wind blew the helicopter into the trees. The pilot said the helicopter did not experience any preimpact malfunctions or failures. The pilot repeated his telephone statement in the Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2. He added, however, that when the helicopter left skid touched down, the left skid was on an uneven surface and he felt the helicopter settling back. He aborted the landing and raised the helicopter to about a 2-foot hover and then the helicopter rolled to the left in a tail-up attitude. It appeared that the helicopter was " . . . hit on the right side by a strong gust of wind . . . ." The pilot added the appropriate cyclic and collective controls input and the helicopter responded by " . . . rolling back to the right . . . ." The helicopter tail rotor then struck the trees. Ground witnesses confirmed the pilot's statement with respect to the aborted landing and collision with the trees. The witnesses said that calm wind conditions existed on the lake with intermittent gusty wind conditions at the accident site.
the pilot's improper use of the flight controls. The downward-sloping terrain and the intermittent gusty wind conditions were factors in this accident.
Source: NTSB Aviation Accident Database
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