Accident Description
A pilot reported an event during takeoff from a high-altitude airport. The aircraft began its takeoff roll and accelerated to 60 miles per hour as usual, but the acceleration from 60 to 80 miles per hour took longer than normal. The pilot stated that the aircraft lifted off properly, but it did not climb as well as desired. At an altitude of approximately 30 to 35 feet above the runway, the pilot raised the landing gear and lowered the nose to accelerate to the best angle-of-climb airspeed. Instead of accelerating and continuing to climb, the aircraft began to descend. The pilot then reduced power to idle. As the airplane touched down, the nose landing gear and left main landing gear collapsed.
Pilot Report
The pilot noted that the aircraft is equipped with automatic extending landing gear. For this takeoff, the pilot did not use any flaps. This was the pilot's third takeoff from a high-altitude airport.
Environmental Conditions
The pressure altitude at the time of the event was 7,489 feet, and the temperature was 48 degrees Fahrenheit. Runway 24 has an upward slope of 1.9 degrees, which equates to a rise of 117 feet over its length.
Performance Considerations
According to the performance data available for the aircraft, the conditions at the time of the event are off the chart. The performance section includes a warning that performance information derived by extrapolation beyond the limits shown on the charts should not be used for flight planning purposes.