Overview
The aircraft was operated with a gross weight at least 500 pounds above the maximum allowable. The pilot did not perform weight and balance calculations before departure. Additionally, cargo was not secured.
Weather and Runway Selection
During the initial call to ground control, the pilot was advised that the wind was from 350 degrees at 13 knots with gusts to 18 knots. The flight was cleared to taxi to Runway 36R, but the pilot requested Runway 27R, which is a longer runway. The request was granted.
Takeoff and Abort
After being cleared to Runway 27R, the pilot contacted the tower and advised readiness for takeoff. The tower controller cleared the flight for takeoff and advised that the wind was from 020 degrees at 14 knots. The pilot acknowledged with "Roger." During the takeoff roll, the pilot reported that the main landing gear did become airborne. He then aborted the takeoff.
Runway Overrun and Gear Collapse
During the subsequent rollout, the aircraft traveled off the end of the runway. The landing gear collapsed as a result of the overrun.