Incident Summary
A cross-country business flight from Concord, New Hampshire to White Plains, New York, conducted under clear skies, ended with a gear-up landing. The pilot extended the landing gear during final approach but failed to notice that the circuit breaker had opened, leaving the gear retracted. The aircraft touched down with the gear doors partially open. The gear warning horn did not operate during the approach.
Flight Details
The flight was uneventful until the landing phase. The pilot reported that he did not check for three green lights indicating gear down and locked. The gear warning system was inoperative, and the circuit breaker for the landing gear system had tripped.
Probable Cause
According to the official findings, the probable cause includes: the landing gear normal retraction/extension assembly being inoperative; gear extension not attained by the pilot; the gear warning system being inoperative; the electrical system circuit breaker popped/tripped; and the pilot not following the checklist.