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N75BH accident description

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Crash location 34.876667°N, 118.829445°W
Nearest city Lebec, CA
34.841644°N, 118.864819°W
3.1 miles away
Tail number N75BH
Accident date 14 Apr 2015
Aircraft type Robert C. Hanson Pitts S2E
Additional details: None

NTSB Factual Report

HISTORY OF FLIGHT

On April 14, 2015, about 0811 Pacific daylight time (PDT), an experimental amateur-built Robert C. Hanson Pitts S2E airplane, N75BH, collided with trees and mountainous terrain about 3 miles northeast of Lebec, California. The airline transport pilot, the sole occupant, sustained fatal injuries, and the airplane was destroyed. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight under Title 14 Code of Federal Regulations (CFR) Part 91. Instrument meteorological conditions (IMC) were reported in the area of the accident. The accident flight originated at the Meadows Field Airport (BFL), Bakersfield, California, about 0748, en route to Blythe Airport (BLH), Blythe, California. No flight plan was filed, and there is no record that a weather briefing was obtained.

Family members reported that the pilot recently purchased the airplane, and it was being flown to his home in Missouri when the accident occurred. When the airplane did not arrive in Blythe, a concerned family member notified the Federal Aviation Administration (FAA). The FAA subsequently issued an alert notice (ALNOT) at 1502 Pacific daylight time.

On April 15, about 1000, the airplane's fragmented wreckage was located by a worker in a remote area of a private ranch, about 40 miles south of the Meadows Field Airport.

Witness stated that on the morning of the accident the weather conditions were poor, and there were dark, low clouds in the area. One witness reported seeing an airplane similar to the accident airplane flying low over the interstate, and stated there were low, dense clouds in the area.

PERSONNEL INFORMATION

The pilot, age 36, held an airline transport pilot certificate with an airplane multiengine land rating, commercial pilot certificate, and a flight instructor certificate with a single-engine land rating. He held type ratings in an Airbus A-320, Beechjet BE- 400, Canadair CL-65, Falcon DA-50, Falcon DA-7X, Hawker HS-125, and a Mitsubishi MU-300. His most recent first-class medical was issued July 1, 2014, and identified the limitation that he must wear corrective lenses.

A partial copy of the pilot's logbook was made available for review. The pilot had about 8,200 total flight hours. He had recently purchased the Pitts S2E, N75BH. Logbook records indicate that the pilot had logged 6.2 hours, all dual received time, in a similar Pitts S2E airplane. Two weeks before the accident, the pilot received an endorsement of training in a Pitts S2E that included normal and crosswind taxi, takeoff and landings, and simulated engine out emergency landings.

AIRCRAFT INFORMATION

The two-seat, bi-wing, fixed gear, amateur built airplane was powered by a Lycoming IO-360 engine. A review of the maintenance records revealed that the airplane's most recent conditional inspection was completed on April 13, 2015, at 226.07 tachometer hours. The tachometer was observed at the accident site with a time of 226.09 hours. The Hobbs hour-meter was never observed at the accident site.

METEOROLOGICAL INFORMATION

The closest weather reporting facility was Sandberg (KSDB), about 10 miles southeast of the accident site. At 0813, an aviation routine weather report (METAR) reported, in part: Wind from 340 degrees at 25 knots, peak gusts to 35 knots; visibility 1 statute mile; clouds and sky condition, 200 feet overcast; temperature 6 degrees C; dew point 4 degrees C; altimeter 30.18 inHg.

Witnesses located near the accident site, at the time of the accident, reported that weather conditions were much worse than that being reported at the airport. An AIRMET (Airman's Meteorological Information) and current observations indicated marginal visual meteorological conditions (MVMC) to instrument meteorological conditions (IMC) conditions existed prior to departure. There is no record of the pilot obtaining a weather briefing from Lockheed Martin Flight Service.

Additional information can be found in the Weather Study Report in the public docket for this report.

WRECKAGE AND IMPACT INFORMATION

The airplane impacted mountainous tree covered terrain on an approximate heading of 090 degrees. The first observed impact point were trees on a ridgeline about 4,000 feet mean sea level (msl). At the initial ground impact point, the propeller was mostly buried in terrain; it was about 350 feet from the first observed point of impact point. The debris field from the first observed point of impact to the main wreckage was about 500 feet.

Portions of the left wing were found in trees, and fragments of wing fabric were scattered down the hillside. The main wreckage, including the cockpit and engine, were in an open field below the ridgeline.

The wreckage was later recovered to a hangar facility in Phoenix, Arizona. Representatives from the National Transportation Safety Board examined the wreckage at the hangar facility on April 17, 2015.

Examination of the wreckage revealed extensive fragmentations of the airplane's structure. The left wing sustained significantly more damage than the right wing. All pieces of the flight control system were identified; the connecting rods were bent and buckled. Outboard portions of each wing tip were accounted for. The wings wooden spar was fragmented, along with portions of the ailerons. Smaller components in the trees were unrecoverable.

The engine separated from the airframe during the accident sequence, and extensive impact related damage was noted throughout. The propeller hub detached from the crankshaft flange; the propeller blades remained primarily intact, the end of one blade was found separated. The propeller blades were bent back with chordwise striations. Engine drive train continuity was established by manually rotating the crankshaft with a rod welded onto the crankshaft. The crankshaft rotated freely, and the valves moved approximately the same amount of lift in firing order.

Examination of the recovered airframe, engine, and system components revealed no evidence of preimpact mechanical malfunction that would have precluded normal operation. Additional examination information can be found in the wreckage examination report with accompanying pictures located in the public docket for this accident.

MEDICAL AND PATHOLOGICAL INFORMATION

An autopsy was performed on the pilot on April 21, 2015, by Kern County Coroner's Office, in Bakersfield. The cause of death was attributed to multiple blunt force trauma.

The FAA Bioaeronautical Forensic Toxicology Laboratory detected ethanol in the muscle (19 mg/hg), but not in the liver. After absorption, ethanol is quickly distributed throughout the body's tissues and fluids fairly uniformly. This is consistent with postmortem production, and it is unlikely that ethanol played a role in the accident.

In addition, pheniramine was detected in the liver. Pheniramine is a sedating antihistamine used in cold and allergy products.

ADDITIONAL INFORMATION

A Garmin GPSMAP 396 was recovered from the wreckage and was sent to the NTSB Vehicle Recorders Laboratory, Washington, DC, where it was successfully downloaded. Review of the device revealed the airplane's flight path, altitude, and groundspeed.

The data revealed that at 0750 the airplane began its takeoff roll from BFL. The airplane reached a maximum altitude of about 2,500 feet above ground level (agl), until descending over the interstate to about 200 feet agl, before turning east towards the Tehachapi Mountains. The final portion of the recording identified the airplane in a climbing turn, starting from about 100 feet agl, climbing to 900 feet agl before the airplane began a descending right turn before the recording stopped at 0811.

Additional information and all figures can be found in the Electronic Devices Factual Report located in the public docket for this accident.

NTSB Probable Cause

The pilot’s continued visual flight into instrument meteorological conditions, which resulted in his failure to maintain sufficient clearance from rising terrain.

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