Casualties unknown

Loss of Control During Thunderstorm Avoidance and Diversion Leads to Crash (N784K)

Paducah, KY, US

On January 8, 1989, a Beech B-90 (registration N784K) operated by Merrill L. Walker was involved in an aviation accident near Paducah, KY. Investigators recorded the probable cause as: PILOT FAILED TO MAINTAIN PROPER ALTITUDE WHILE MANEUVERING TO LAND. PROBABLE CONTRIBUTING FACTORS WERE INOPERATIVE WEATHER RADAR, THUNDERSTORMS, LIGHTNING, AN UNDETERMINED ELECTRICAL PROBLEM, DARK NIGHT, THE PILOT'S IMPROPERLY PLANNED APPROACH AND VISUAL… This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

During a night return flight to Decatur, AL, the pilot encountered engine anomalies and a white arc, diverted to Paducah, lost situational awareness during a turn, and crashed into trees.

Flight and Weather Conditions

The pilot was conducting a return flight at night to Decatur, Alabama. The weather radar was inoperative, and the pilot visually avoided thunderstorms, which had been forecasted.

Engine Anomalies and Diversion

While maneuvering to avoid thunderstorms, the pilot noted a reduction in engine power, a slight yaw, indications of fuel flow irregularity, and that the left and right boost pumps were inoperative. These occurrences coincided with the pilot observing a white arc that he described as having jumped from the propeller, spinner, or nacelle area to the aircraft's nose. Due to the weather conditions, the pilot elected to divert to Paducah.

Loss of Situational Awareness and Crash

After the airport in Paducah became visible, the pilot needed to lose altitude before landing and was cleared to make a 360-degree turn. While turning, the pilot lost sight of the airport and subsequently rolled out on the wrong heading, initiating flight toward a strobe light at an industrial complex. Upon realizing the error and again seeing the airport, the pilot turned toward the runway. However, while maneuvering, the aircraft lost altitude, struck trees, and crashed.

Post-Accident Examination

Examination of the engines and fuel pumps revealed no indication of a preimpact failure. No physical evidence of a lightning strike was found, although the nose and engines were badly damaged from the impact.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X27532. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.