Casualties unknown

Night Flight Ends in Crash; Pilot's Blood Shows Antihistamine (N98723)

Arlington, TX, US

On May 13, 1994, a Cessna 172P (registration N98723) operated by Cothron Aviation, Inc. was involved in an aviation accident near Arlington, TX. Investigators recorded the probable cause as: THE PILOT'S LOSS OF AIRCRAFT CONTROL FOR AN UNDETERMINED REASON, WHILE MANEUVERING IN THE VICINITY OF THE AIRPORT. 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 2026-07-04Data APIEditorial standards

A rented airplane crashed in dark night conditions after being observed in a steep bank and dive. Toxicology found diphenhydramine in the pilot's blood, an antihistamine not approved for flying.

Accident Details

A pilot rented an airplane from a fixed base operator (FBO) that had stayed open beyond normal hours to accommodate the late rental. The pilot departed with one passenger under dark night conditions. Approximately 20 minutes after takeoff, witnesses observed the airplane flying on a southeasterly heading at an altitude between 1,000 and 1,500 feet above ground level, with wings level and the engine running. Shortly thereafter, the airplane entered a steep right bank and dove toward the ground. The airplane impacted the ground in a wings-level, nose-down attitude on a heading of west, about 2.5 miles southwest of the airport. The airplane disintegrated during impact.

Investigation Findings

Examination of the wreckage revealed no preimpact part failure or malfunction. A toxicology test of the pilot's blood was positive for diphenhydramine, an over-the-counter antihistamine, at a concentration of 0.3 mg/L, which is within a therapeutic range. Diphenhydramine was not approved for use while flying. The final report did not identify a probable cause for the accident.

Frequently asked questions

What happened in the 13 May 1994 Cessna 172P accident near Arlington, TX?

A rented airplane crashed in dark night conditions after being observed in a steep bank and dive. Toxicology found diphenhydramine in the pilot's blood, an antihistamine not approved for flying.

What aircraft was involved and where did it happen?

The accident on 13 May 1994 involved a Cessna 172P, registration N98723, operated by Cothron Aviation, Inc., at Arlington, TX.

What was the probable cause of the accident?

THE PILOT'S LOSS OF AIRCRAFT CONTROL FOR AN UNDETERMINED REASON, WHILE MANEUVERING IN THE VICINITY OF THE AIRPORT.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X01269. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.