Casualties unknown

1990-04-10: Mooney M-20J (N526L) — Inola, OK

Inola, OK, US

On April 10, 1990, a Mooney M-20J (registration N526L) was involved in an aviation accident near Inola, OK. Investigators recorded the probable cause as: THE PILOT'S DECISION TO CONDUCT THE FLIGHT INTO KNOWN ADVERSE WEATHER AND HIS INABILITY TO MAINTAIN CONTROL OF THE AIRPLANE DUE TO SPATIAL DISORIENTATION. FACTORS WERE THE DARK NIGHT CONDITIONS AND THUNDERSTORMS. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

After completing a night instrument flight lesson, a non-instrument rated pilot refused a ride home and chose to fly. The area was under a severe thunderstorm warning. The airplane impacted a tree, fence, and power line during a high-speed descending left turn toward the departure airport.

Background

The pilot, who did not hold an instrument rating, had just finished a night instrument flight lesson with a flight instructor. Despite the instructor's suggestion to drive home, the pilot elected to fly the airplane home, expressing confidence in his ability to do so.

Weather Conditions

At the time of the flight, the area was under a severe thunderstorm warning, though the exact weather conditions encountered by the pilot could not be determined. No records indicate that the pilot contacted any commercial or government weather service before the flight.

Circumstances of the Flight

The flight instructor noted that the airplane departed in visual flight rules (VFR) conditions and that all systems were operational at the conclusion of the lesson. During the return flight, the airplane was observed in a high-speed, descending left turn oriented toward the departure airport.

Impact and Wreckage

The airplane subsequently impacted a tree, a fence and fence post, a high-voltage power line, and the ground. All wreckage was located along the wreckage path. Examination revealed no pre-impact problems with the airframe, engine, or related components.

Aircraft Condition

The instructor reported that everything on the airplane was functioning properly when they finished the instrument flight lesson. No mechanical anomalies were identified during the post-accident inspection.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X22920. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.