19990418003689A

Experimental RAF-2000-GTX gyrocopter lost lift on take-off and sustained substantial damage, other circumstances are unknown. (.19) on April 18, 1999, about 1230 Alaska daylight time, a wheel equipped, experimental/homebuilt raf 2000-GTX gyroplane, N95WE, sustained substanital damage during a forced landing after takeoff from the Palmer Municipal Airport, Palmer, Alaska. The gyroplane was being operated as a visual flight rules (VFR) local area personal flight when the accident occurred. The solo private pilot/owner was not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at the Palmer Municipal Airport, about 1220. During a telephone conversation with the national transportation safety board investigator-in-charge on April 20, the pilot reported that he was departing on runway 15. He said that as the gyroplane climbed to about 400 feet above the runway, strong winds were encountered from out of the southeast. The pilot stated: "I just could not keep it from sinking, and I had to put it down." The pilot said that during a forced landing in an open field the gyroplane landed hard, and the fuselage and main rotor system sustained substantial damage. The pilot holds a private pilot certificate with a single-engine land rating, and did not hold a rotorcraft-gyroplane rating. The pilot stated that he did obtain an instructor's logbook endorsement for solo flight in gyroplanes. The closest official weather observation station is located at the Palmer Municipal Airport. On April 18, at 1153, an aviation routine weather report (METAR) was reporting, in part: wind, 170 degrees (true) at 7 knots; visibility, 10 statute miles; clouds, clear; temperature, 55 degrees f; dew point, 35 degrees f; altimeter, 29.85 inhg. (.4) the private pilot was departing on runway 15 in a gyroplane. He said that as the gyroplane climbed to about 400 feet above the runway, strong winds were encountered from the southeast. The pilot stated: 'I just could not keep it from sinking, and I had to put it down.' The pilot said that during a forced landing in an open field the gyroplane landed hard, and the fuselage and main rotor system sustained substantial damage. The pilot holds a private pilot certificate with a single-engine land rating, and did not hold a rotorcraft-gyroplane rating. The pilot stated that he did obtain an instructor's logbook endorsement for solo flight in gyroplanes. The pilot reported that after the accident a bent and fractured cyclic control tube was found lying next to the gyroplane wreckage. The cyclic control tube was sent to the ntsb's materials laboratory for examination. A safety board metallurgist reported that the fracture surfaces exhibited features consistent with an overstress separation. He added that the fracture face was consistent with the direction of the tube bending. The closest official weather observation station is Palmer. On April 18, at 1153, an aviation routine weather report (METAR) was reporting, in part: wind, 170 degrees at 7 knots. (-23) the pilot departed runway 15 in the amateur built gyro-copter on April 18, 1999 approx. 12:30 adt. He climbed to about 400 AGL and encountered strong winds and turbulence from the south east. The pilot had stated that he could not keep the ac from sinking and had to do an off field landing. The aircraft landed hard and the fuselage, landing gear and main rotor system sustained substantial damage.