NTSB Identification: LAX99LA139.
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Accident occurred Sunday, April 04, 1999 in RAMONA, CA
Probable Cause Approval Date: 11/30/2000
Aircraft: Cessna U206G, registration: N756CF
Injuries: 1 Minor,2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot said he flew to Ramona to practice takeoffs and landings. During the accident sequence, the aircraft was on short final and configured with full flaps at a normal approach speed when a very high sink rate suddenly developed. The pilot said he was unable to arrest the descent before colliding with the ground. He further stated that during the prior landings, the winds had been variable 10 degrees or more on either side of the runway heading and he believed he encountered a wind shear. The aviation surface weather observation (METAR) at Ramona taken 11 minutes after the accident reported winds from 260 at 7 knots, variable from 230 to 290 degrees.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to maintain an adequate airspeed margin to compensate for the variable wind conditions existing at the time of the landing.

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