Casualties unknown

Night Training Flight Crashes After Steep Turn Near Runway (N8251B)

Burbank, CA, US

On January 19, 1990, a Piper PA-28-161 (registration N8251B) operated by Daniel Tompkins was involved in an aviation accident near Burbank, CA. Investigators recorded the probable cause as: POOR JUDGEMENT OF THE INSTRUCTOR PILOT (CFI) DUE TO HIS IMPAIRMENT FROM USE OF MARIJUANA, INADEQUATE SUPERVISION OF THE FLIGHT BY THE CFI, AND HIS FAILURE TO ASSURE THAT ADEQUATE AIRSPEED WAS MAINTAINED, WHICH RESULTED IN AN INADVERTENT STALL. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 4 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A night instrument training flight crashed shortly after takeoff from Runway 7 after the instructor requested an immediate landing. The aircraft entered a steep left turn and descended abruptly, impacting north of the runway. Investigation found no mechanical failure, but the instructor's blood tested positive for marijuana components and the aircraft was overweight.

Accident Summary

A night instrument training flight ended in a crash shortly after departure. The aircraft was scheduled for a night instrument training flight with a certified flight instructor (CFI) and two additional pilots seeking instrument ratings on board. Shortly after taking off from Runway 7, the CFI radioed the tower that an immediate landing was necessary, though no reason was given. The flight was cleared to land. Witnesses then observed the aircraft enter a steep left turn at low altitude and descend abruptly. It crashed in a steep descent approximately 500 feet north of Runway 7 on a heading of about 260 degrees. The impact occurred in a left-wing-low, nose-down attitude.

Investigation Findings

Investigators found no preimpact part failure or malfunction of the aircraft or engine. The aircraft's estimated gross weight at the time of the accident was 2,411 pounds, exceeding its maximum certified gross weight of 2,325 pounds.

Toxicological Analysis

Toxicological tests on the CFI's blood revealed the presence of delta-9-tetrahydrocannabinol, a psychoactive component of marijuana, at a concentration of 1 ng/mL. Additionally, delta-9-tetrahydrocannabinol carboxylic acid, a metabolite of marijuana, was found at a concentration of 7 ng/mL.

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Frequently asked questions

What happened in the 19 Jan 1990 Piper PA-28-161 accident near Burbank, CA?

A night instrument training flight crashed shortly after takeoff from Runway 7 after the instructor requested an immediate landing. The aircraft entered a steep left turn and descended abruptly, impacting north of the runway. Investigation found no mechanical failure, but the instructor's blood tested positive for…

What aircraft was involved and where did it happen?

The accident on 19 Jan 1990 involved a Piper PA-28-161, registration N8251B, operated by Daniel Tompkins, at Burbank, CA.

What was the probable cause of the accident?

POOR JUDGEMENT OF THE INSTRUCTOR PILOT (CFI) DUE TO HIS IMPAIRMENT FROM USE OF MARIJUANA, INADEQUATE SUPERVISION OF THE FLIGHT BY THE CFI, AND HIS FAILURE TO ASSURE THAT ADEQUATE AIRSPEED WAS MAINTAINED, WHICH RESULTED IN AN INADVERTENT STALL. FACTORS RELATED TO THE ACCIDENT WERE: THE CFI'S INADEQUATE PREFLIGHT…

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X22430. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.