NTSB Identification: FTW91FA144.
The docket is stored on NTSB microfiche number 46054.
Accident occurred Friday, August 09, 1991 in MIDLAND, TX
Probable Cause Approval Date: 04/23/1993
Aircraft: PIPER PA-28RT-201T, registration: N8144J
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE AIRPLANE CRASHED IN A SHALLOW UNCONTROLLED ATTITUDE ABOUT 3.5 MILES FROM ITS INTENDED DESTINATION WHILE HEADING IN THE OPPOSITE DIRECTION, DESPITE HAVING RECEIVED VECTORS THROUGH AN ARSA AND A LANDING ADVISORY FROM THE UNICOM. REVIEW OF THE ATC TAPES FROM THE DEPARTURE AND ARRIVAL SEGMENTS REVEALED THAT THE PILOT WAS IN EXTREME PHYSICAL DISTRESS UPON ARRIVAL. ANALYSIS OF THE TAPES AND THE PILOT'S MEDICAL HISTORY BY A PANEL OF FLIGHT SURGEONS INDICATED THAT THE PILOT WAS INCAPACITATED SHORTLY BEFORE IMPACT, PROBABLY DUE TO A MAJOR MEDICAL IMPAIRMENT. THE AUTOPSY REVEALED SEVERAL ARTIFACTS INDICATIVE OF SEVERAL YEARS OF HYPERTENSION AND ANKYLOSING SPONDYLITIS. HE WAS TAKING MEDICATION FOR THE CONDITIONS, HOWEVER, THE MEDICATIONS, TAKEN IN PARALLEL, COUNTERACTED THE ANTIHYPERTENSIVE MEDICINE'S EFFECT. IN ADDITION, HIS TOXICOLOGY SAMPLES REVEALED TWO PAIN MEDICATIONS, NORMALLY PRESCRIBED TO ALLEVIATE THE SIDE EFFECTS OF THE PRESCRIPTIONS BEING TAKEN FOR THE MEDICAL CONDITIONS, IN QUANTITIES ABOVE THE NORMAL THERAPEUTIC LEVELS. ONE OF THE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE PILOT'S INABILITY TO CONTROL THE AIRPLANE DUE TO HIS PHYSIOLOGICAL INCAAPACITATION. A FACTOR WAS THE PILOT'S IMPAIRMENT DUE TO THE USAGE OF PAIN MEDICATIONS.

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