What happened
The aircraft was returning from a cross-country flight and attempted to land at its home-based airport during nighttime conditions. The airport lacked lighting, and the environment was characterized by a dark night with no moonlight. During the initial approach, the pilot was unable to locate the runway, which was marked at the threshold with reflectors. On the second attempt, the pilot descended to a lower altitude to establish better ground reference but collided with power lines approximately one and one half miles from the airport.
The investigation
The investigation focused on the circumstances surrounding the collision with the power lines during the final approach phase. Key factors included the lack of airport lighting, the absence of moonlight, and the pilot's decision to descend below safe altitudes in an attempt to gain visual reference for the unmarked runway.
Findings
The primary contributing factor was the pilot's failure to maintain terrain clearance while attempting to locate the runway at night. The lack of ambient light and airport lighting significantly reduced visibility, leading to spatial disorientation or loss of visual reference. The decision to descend prematurely without positive identification of the runway environment resulted in the collision with the power lines.
Safety message
Pilots should exercise extreme caution when operating at unlighted airports during nighttime conditions. It is critical to rely on instrument approaches and navigation aids rather than attempting visual descents without clear ground reference. If the runway cannot be positively identified, a go-around or diversion to a better-equipped airport is the safest course of action.