HEMPSTEAD, TX, USA
N73534
Let BLANIK L-13
When the glider was adjacent to the intended touch down point, the pilot 'took out some of the spoilers to decrease sink [rate].' After initiating a left turn to base leg he realized that the 'altitude was still much too great and attempted to deploy full spoilers.' Observers on the ground noted that 'no spoilers were deployed; rather, the flaps appeared to have been extended instead.' On final approach, the pilot lowered the nose to try and touch down on the runway, and the aircraft 'porpoised' due to the 'excessive' speed. Approximately 50 feet from the departure end of the runway and less than 15 feet agl, the pilot 'lifted the plane off the ground to avoid hitting the property fence and crossing Highway 290.' He flew the glider over the highway and forced it to the ground in a dirt parking lot. The glider came to a stop after hitting a metal building. The glider also hit a neutral power line during the landing to the parking lot. In the Blanik L-13, the handle for the spoilers is located directly underneath the handle used to deploy the flaps. The pilot stated that 'in concentrating on other factors during landing, it appears that I pulled the wrong lever.' The private pilot rated student had 7 hours total glider time.
On June 14, 1998, at 1715 central daylight time, a Let Blanik L-13 glider, N73534, registered to and operated by the Greater Houston Soaring Association of Richmond, Texas, was substantially damaged while landing at the Hempstead Gliderport near Hempstead, Texas. The private pilot, the sole occupant, sustained minor injuries. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations (CFR) Part 91 local solo instructional flight. The flight originated from the Hempstead Gliderport at 1641. The pilot reported in the Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2, and in a written statement that a "normal aero-tow was taken, and he disengaged at 3,000 feet agl." After 23 minutes, he elected to return to the gliderport. He entered left traffic for runway 17L at approximately 900 feet agl. He went through the "USTALL" checklist, lowering and locking the undercarriage, slowing to 55 knots and trimming the aircraft. The pilot further reported that he deployed the "airbrakes [spoilers] approximately halfway and looked to the left wing to verify their deployment." About midfield on downwind, he realized that he was too high due to "substantial amount of thermal lift on the fields underneath the downwind leg," and deployed more spoilers. When the glider was adjacent to the intended touch down point, he "took out some of the spoilers to decrease sink [rate]." After initiating a left turn to base leg, he realized that the "altitude was still much too great and attempted to deploy full spoilers." Observers on the ground noted that "no spoilers were deployed; rather, the flaps appeared to have been extended instead." In the Blanik L-13, the handle for the spoilers is located directly underneath the handle used to deploy the flaps. The pilot stated that "in concentrating on other factors during landing, it appears that I pulled the wrong lever." The pilot also reported that the glider was not losing enough altitude, so he "lowered the nose of the plane to approach the ground. The airspeed increased substantially." On final approach, he lowered the nose to try and touch down on the runway. The aircraft "porpoised" due to the "excessive" speed of approximately 15-20 knots. Approximately 50 feet from the departure end of the runway and less than 15 feet agl, he "lifted the plane off the ground to avoid hitting the property fence and crossing Highway 290. He flew the plane over the highway and forced it to the ground in a dirt parking lot. The glider came to a stop after hitting a metal building. Although the pilot did not realize it, the glider also hit a neutral power line during the landing to the parking lot. The pilot reported that the glider's left and right wings were sheared and that the nose cone was dented. The pilot held a private pilot certificate with an airplane single engine land rating. On the day of the accident, the pilot received 1.1 hours dual instruction during three flights prior to solo endorsement. He had previously received 4.9 hours of dual instruction in gliders.
The pilot's failure to maintain the proper rate of descent. Factor were the pilot's inadvertent lowering of the flaps instead of extending the spoilers, and his lack of experience in gliders.
Source: NTSB Aviation Accident Database
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