NYC07FA025

After 30 minutes of flying in the local area, the special light sport airplane was seen maneuvering about 1 mile northeast of the airport when the engine "surged," then became silent. Moments later, the airplane impacted trees in a wooded residential area. Examination of the wreckage revealed there was virtually no fuel in the fuel tanks or fuel system at impact. No preimpact malfunctions were noted with the airplane, and there was no evidence of rotation on the propeller. No fueling facilities were available where the airplane was based, and fueling documentation provided by the operator revealed the airplane flew seven times, for a total of 6.3 hours since its last refueling. The total fuel capacity for the airplane was 30 gallons, and engine fuel consumption ranged from a high of 7.1 gallons per hour at "takeoff performance" to less than 4.0 gallons per hour at "Max Cruising." The airplane flight manual (AFM) advised to "visually confirm fuel level" as part of the preflight inspection and to "Check fuel quantity" prior to takeoff. According to Federal Aviation Administration (FAA) records, the pilot at one time had been seeing a psychiatrist for the treatment of anxiety and depression and was taking citalopram and bupropion (prescription anti-depressant medications); however, three years prior to the accident, his psychiatrist reported to the FAA that he was no longer on the medication. The FAA then issued him a medical certificate, and advised him that he needed to abide by the rules that related to his physical deficiency. The pilot was prohibited by the FAA from operating an aircraft if new symptoms or adverse changes occurred, or if he experienced any side effects from, or required a change in medication. A review of the pilot's most recent application for a medical certificate 17 months prior to the accident, noted that the pilot did not mention the use of any anti-depressants. The application also indicated "No" to all other conditions under "Medical History," including specifically "Mental disorders of any sort; depression, anxiety, etc." The toxicology report noted that citalopram, N-desmethylcitalopram, and di-N-desmethylcitalopram (the metabolites of citalopram) were detected in the pilot's blood at levels approximately 10 times higher than those expected from the dosage previously prescribed for the pilot.

History of flight

On November 11, 2006, at 1630 eastern standard time, a Czech Aircraft Works CH 601 XL RTF special light sport airplane, N601VA, was substantially damaged when it impacted trees following a loss of engine power while maneuvering near Sky Bryce Airport (VG18), Basye, Virginia. The certificated private pilot was fatally injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local flight which departed about 1600. The personal flight was conducted under 14 CFR Part 91.

According to witness statements, the pilot stated he was going to fly for "about an hour." The airplane was then observed, "circling" north of the airport, and then descending. It was next observed "very low" over the trees, turning southward. It then turned towards the east, and the engine "surged," then became silent. Moments later, the airplane banked 90 degrees to the left, and witnesses heard the sound of impact.

The accident occurred during the hours of daylight. The wreckage was located at 38 degrees, 49.321 minutes north latitude, and 78 degrees, 45.078 minutes west longitude, at an elevation of 1,379 feet.

Personnel information

According to Federal Aviation Administration (FAA) records, the pilot held a private pilot certificate with a rating for airplane single-engine land with a "night flying prohibited" limitation. A review of his pilot logbook revealed he had 343 total hours of flight experience, with 34 hours in the accident airplane, make and model. His most recent FAA third-class medical certificate was issued on June 13, 2005.

Aircraft information

According to FAA documents and the airplane's equipment list, the airplane was manufactured in 2005. It was delivered to the owner with the "night option," which included, navigation, strobe, landing, and instrument lights, and was issued a Light Sport Category, Special Airworthiness Certificate on October 3, 2005.

According to maintenance records, the airplane's most recent 100-hour inspection was completed on October 23, 2006, and at the time of the accident, it had accumulated 507.4 total hours of operation.

According to the airplane flight manual (AFM), the airplane was equipped with fuel quantity and fuel pressure gauges. Fuel was stored in two 15-gallon fuel tanks, one in each wing. Total fuel capacity was 30 gallons, and usable fuel was listed as 29 gallons.

In the normal procedures section of the AFM, under "PREFLIGHT CHECK" it advised to "visually confirm fuel level" in the left and right tanks. Additionally, under "BEFORE TAKE-OFF" the AFM advised to "Check fuel quantity."

According to the AFM and the Rotax operator's manual, fuel consumption ranged from a high of 7.1 gallons per hour at "takeoff performance," to less than 4.0 gallons per hour at "Max Cruising."

A review of fueling documentation revealed that the airplane prior to the accident flight had been flown seven times since its last refueling. During that time, it had flown a total of 6.3 hours.

Meteorological information

A weather observation taken about 7 minutes after the accident at Grant County Airport (W99), Petersburg, West Virginia, located approximately 21 nautical miles northwest of the accident site, recorded the wind as 180 degrees at 5 knots, visibility 10 miles, scattered clouds at 8,500 feet, temperature 77 degrees Fahrenheit, dew point 46 degrees Fahrenheit, and an altimeter setting of 29.74 inches of mercury.

A review of United States Naval Observatory (USNO) data for the area of Basye, Virginia, revealed that official sunset occurred at 1705 (35 minutes after the accident) and civil twilight ended at 1733 (63 minutes after the accident).

Wreckage and impact information

After striking several trees, the airplane came to rest next to a road oriented in a direction of 072 degrees magnetic, 0.9 miles northeast of the approach end of runway 23, and 116 feet above it.

There was no debris path or postcrash fire. All major components of the airplane were accounted for at the accident site.

The left wing, right wing, and tail section, along with all associated flight control surfaces displayed differing degrees of damage. The main wreckage was found resting upright. The outboard 5 feet 4 inches of the left wing had separated from the airframe. The rudder and horizontal stabilizer had separated from their respective attach fittings. The wing flaps had separated from the flap actuator and were found hanging from their hinges in a downward direction. Further examination revealed that the internal flap drive mechanism corresponded to a flaps up position. Flight control continuity was confirmed from the right aileron, left aileron bellcrank, elevator, and rudder horns to the cockpit.

Examination of the cockpit revealed that the throttle control was in the maximum power position. The carburetor heat control was in the off position, and the fuel selector was in the left tank position.

Examination of the nose spinner and three bladed composite propeller revealed that the spinner displayed evidence of crushing only on the portion in contact with the ground and lower engine cowling. All of the propeller blades displayed differing degrees of damage. One blade was folded rearward under the engine cowling, one blade had separated at the blade root from the propeller hub, and one blade displayed chordwise separation.

Examination of the engine revealed continuity of the intake system, exhaust system, valve train, and crankshaft. The crankshaft was then rotated by hand, and no binding was noted.

No smell of fuel was noted at the accident site, and no evidence of fuel staining or spillage was identified.

The fuel lines, fuel tanks, and fuel filter were examined, and no preimpact malfunctions or leaks were discovered. No evidence of fuel in the low points of the system was discovered, and the fuel tanks were absent of fuel. The fuel filter was clean, free of debris, and contained a trace amount of fuel.

The carburetors were disassembled to inspect the diaphragms and the inside of the float bowls. The diaphragms were dry, and no tears or punctures were evident. The floats were functional, and the internal portions of the float bowls were clean and free of debris.

Approximately 2 ounces of fluid, consistent with 100LL aviation gasoline, was recovered from the entire fuel system for testing. The fluid included the trace amount from the fuel filter and approximately 4 tablespoons from the carburetor float bowls. The fluid was bright, clear, and no visible contamination was evident. When the fluid sample was applied to a coupon containing water-finding paste, the paste did not react, indicating water was not present.

Medical and pathological information

A postmortem examination was performed on the pilot by the State of Virginia's Office of the Chief Medical Examiner.

Toxicological testing of the pilot was conducted at the FAA Bioaeronautical Sciences Research Laboratory, Oklahoma City, Oklahoma.

The pilot's forensic toxicology report indicated:

">> 0.742 (ug/ml, ug/g) CITALOPRAM detected in Blood

>> CITALOPRAM present in urine

>> 0.277 (ug/ml, ug/g) N-DESMETHYLCITALOPRAM detected in Blood

>> N-DESMETHYLCITALOPRAM present in Urine

>> 0.069 (ug/ml, ug/g) DI-N-DESMETHYLCITALOPRAM detected in Blood

>> DI-N-DESMETHYLCITALOPRAM present in Urine

>> IBUPROFEN present in Blood

>> IBUPROFEN detected in Urine

>> NAPROXEN detected in Urine

>> NAPROXEN NOT detected in Blood

>> PSEUDOEPHEDRINE detected in Urine"

According to his application for a third-class airman medical certificate dated June 7, 2003, the pilot had been undergoing treatment with a psychiatrist every 4 months for the treatment of anxiety and depression. He was also taking two antidepressant prescription drugs; citalopram known by the brand name Celexa, and bupropion known by the brand name Wellbutrin. The applicat