Incident Overview
A business jet landed approximately 2,500 ft beyond the threshold of a 10,000-ft runway at its destination airport. The pilot deployed the flight spoilers and attempted to activate the thrust reversers, but the airplane did not decelerate as expected. A warning horn sounded. The pilots then applied normal braking followed by emergency braking, both of which were ineffective. The airplane overran the runway, struck several approach lighting stanchions, and came to rest after the landing gear collapsed.
Occupant and Damage Status
The airplane's occupants were uninjured. The airplane sustained substantial damage during the accident sequence.
Post-Accident Findings
Following the accident, the captain realized he had forgotten to move the thrust reverser emergency stow switches to their normal operating position after completing a preflight check. The warning horn heard during landing was an indication of the stowed thrust reverser switches. The ineffective braking likely occurred because the engines produced increased thrust output due to the attempted application of the thrust reversers with the switches in the stowed position.
A postaccident examination of the wreckage confirmed no evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation of the airplane. The airplane checklist found in the cockpit was marked "For Training Purposes Only" and was for an airplane that was not equipped with thrust reversers.