Plane Crash Reports 2003

2003 Plane Crash Report Result

Title: DAYLIGHT TIME, A PIPER PA-18-150, N46773, WAS SUBSTANTIALLY DAMA

Report Date: 12/16

Plane Crash Problem: HISTORY OF FLIGHT On May 4, 2003, about 0930 eastern daylight time, a Piper PA-18-150, N46773, was substantially damaged during a collision with trees, while maneuvering near Ashland, Maine. The certificated commercial pilot was fatally injured. Visual meteorological conditions prevailed for the local flight that departed Houlton International Airport (HUL), Houlton, Maine. No flight plan was filed for the commercial public use flight conducted under 14 CFR Part 91. According to the owner of a fixed based operator at HUL, the pilot added 27.4 gallons of 100LL aviation gasoline prior to the flight. The owner estimated that the pilot departed HUL about 0800. An employee of the Maine Department of Inland Fisheries and Wildlife stated that the pilot was under contract to perform aerial observation flights. Specifically, the pilot was tracking a lynx at the time of the accident. The employee added that the pilot would usually fly "a couple of hundred" feet above the ground while tracking radio signals from a collar secured to the animal. Occasionally, the pilot would fly lower to obtain visual contact with the animal. The employee added that the pilot was very experienced at aerial observation flights, and had accumulated several thousand hours of flight time conducting similar flights. In addition, the pilot had flown approximately 8 hours during the day prior to the accident. The accident occurred during the hours of daylight; located about 46 degrees, 36.27 minutes north latitude, and 69 degrees, 08.60 minutes west longitude. PILOT INFORMATION The last entry in the pilot's logbook was dated November 7, 2001. At that time, the pilot reported a total flight experience of approximately 21,810 hours; of which, about 21,586 hours were as pilot in command. Approximately 21,491 hours were in single engine airplanes, and the majority of flight time within the preceding two years was in the accident airplane. The pilot's most recent Federal Aviation Administration (FAA) second class medical certificate was issued on January 23, 2003, with a special restriction stating that the certificate was valid for six months. At that time, the pilot reported a total flight experience of 22,510 hours. AIRCRAFT INFORMATION The airplane's most recent annual inspection and engine overhaul was completed on December 12, 2002. The airplane had flown approximately 175 hours since that inspection. METEOROLOGICAL INFORMATION The reported weather at an airport about 50 miles east of the accident site, at 0935, was: wind from 270 degrees at 11 knots, sky clear, temperature 53 degrees F, dew point 25 degrees F, altimeter 30.07 inches Hg. WRECKAGE INFORMATION The wreckage was located in a wooded area, and examined on May 5, 2003. The airplane was found intact, inverted, and oriented about a 250-degree heading. It was located about 20 feet south of a logging road, which was oriented on an approximate 270-degree heading. Two tree strikes were observed prior to the wreckage. The first strike was approximately 140 feet from the wreckage, and the second strike observed about 100 feet beyond the first strike, on an approximate 260-degree heading toward the wreckage. A freshly cut tree branch was located in the vicinity of the wreckage, and exhibited black paint transfer. All major components of the airplane were accounted for at the scene. Examination of the wreckage revealed no pre-impact mechanical malfunctions. Flight control continuity was confirmed from all control surfaces to the cockpit controls. The right wing had two fuel tanks, and fuel was found in both tanks. The left wing had one fuel tank, and it also contained fuel. The flaps were observed near the retracted position, the right aileron was deflected upward, and the left aileron was deflected downward. Both wings exhibited impact damage at the leading edge, but the damage to the left wing was more severe. The left wing had folded aft, and exhibited two leading edge bows near the wingtip, consistent with tree-strikes. The fuel selector was positioned to the left tank. The throttle was in the full forward position, and the mixture was about 1/4 inch from the rich position. The cockpit area was crushed, and the lap belt and shoulder harness were fastened. The flap handle was found in the first "notch" position. The empennage, vertical stabilizer, and horizontal stabilator sustained minor damage. The stabilator trim was in a nose down position. The engine remained attached to the airframe. One propeller blade exhibited s-bending, and the other blade was curled at the tip. The top spark plugs and valve covers were removed from the engine. The spark plug electrodes were intact and light gray in color, except for the number two top plug which was coated with oil. The propeller rotated freely by hand. Crankshaft, camshaft, and valve train continuity were confirmed. Thumb compression was attained on all four cylinders, and all eight ignition leads produced spark. Oil was present throughout the engine, and the oil pressure screen was absent of debris. The fuel line to the carburetor inlet screen contained fuel, and the inlet screen was absent of debris. Some fibrous debris was noted in the gascolator. MEDICAL AND PATHOLOGICAL INFORMATION The Safety Board's Medical Officer extracted information from the pilot's FAA medical records and compiled a factual report of medical information. Review of the medical records revealed that the FAA had monitored the pilot for a history of single-vessel coronary artery disease, which had been stable and asymptomatic for about 10 years. On June 27, 2000, the pilot's cardiologist reported to the FAA Aeromedical Certification Division: "... He clinically remains asymptomatic with no symptoms attributable to angina, congestive heart failure or limitation in his exercise capacity. On the basis of his exercise performance on his most recent treadmill stress test, he is at very low risk for cardiac event..." On July 7, 2002, the pilot's cardiologist report to the FAA Aeromedical Certification Division: "...In combination with his stable symptoms and his previous noninvasive evaluation and his most current treadmill stress performance, he is at very low risk for any cardiac events..." The cardiovascular findings on autopsy performed on the pilot by the Office of the Chief Medical Examiner, Augusta, Maine were consistent with the known cardiac disease. The cause of death was listed as "Blunt Injuries to Head." Toxicological testing was conducted at the FAA Toxicology Accident Research Laboratory, Oklahoma City, Oklahoma. According to the toxicology report: "0.112 (ug/ml, ug/g) CHLORPHENIRAMINE detected in Blood CHLORPHENIRAMINE present in Urine DEXTRORPHAN detected in Blood DEXTRORPHAN present in Urine DEXTROMETHORPHAN detected in Blood DEXTROMETHORPHAN present in Urine 0.41 (ug/ml, ug/g) DIPHENHYDRAMINE detected in Blood DIPHENHYDRAMINE present in urine 0.165 (ug/ml, ug/g) DOXYLAMINE detected in Blood DOXYLAMINE present in Urine EPHEDRINE detected in Blood EPHEDRINE detected in Urine PSEUDOEPHEDRINE present in Blood PSEUDOEPHEDRINE present in Urine PHENYLPROPANOLAMINE present in Urine 168.2 (ug/ml, ug/g) ACETAMINOPHEN detected in Urine" The findings in the toxicology report were consistent with the ingestion of at least three different over-the-counter medications that contained sedating antihistamines. The pilot's wife stated that he was "fighting a bad cold for about a week," prior to the accident. She added the pilot was taking NyQuil to "get through the night," and it was possible he was also taking Benadryl. ADDITIONAL INFORMATION The wreckage was released to a relative of the pilot on May 5, 2003.

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