On September 6, 1997, a North American T-6-SNJ5 (registration N1047C) was involved in an aviation accident near Camden, SC. Investigators recorded the probable cause as: The pilot's failure to take remedial action after a loss of engine power for undetermined reasons, leading to a spin. Factors were the pilot's use of unapproved medication, and the FAA's inadequate certification and standards for airman. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
Witnesses observed an airplane performing steep turns at low altitude when the engine began to miss and quit. The aircraft rolled right and entered a spin. Toxicology found fluoxetine and diltiazem in the pilot.
Accident Sequence
Witnesses observed a low-flying airplane performing steep turns with bank angles of approximately 60 to 70 degrees. During these turns, the airplane's engine began to miss and subsequently quit. The airplane continued in a left bank even after the engine stopped. After a few seconds, the airplane snapped, rolled to the right, and entered a right-hand spin.
Medical and Toxicology Information
The pilot held a special issuance medical certificate issued on January 31, 1997, based on a history of angina pectoris and coronary artery disease. The certificate had no restrictions other than for vision. The certification was granted on the basis of a letter from the pilot's cardiologist, which stated that the pilot was not being treated for clinical depression. However, toxicological examination revealed the presence of fluoxetine in the pilot's system. Patients who are prescribed fluoxetine are not granted medical certification by the FAA. Additionally, the pilot had diltiazem in his system, a drug that can induce low blood pressure and slowed heart rate. Medical personnel indicated that diltiazem can reduce resistance to G-induced loss of consciousness. According to Federal Aviation Regulation Part 67, the FAA may impose operational restrictions on a certificate as needed for safety. Severe coronary artery disease can be aggravated by the physiological effects of acrobatic flight.