NTSB Narrative Summary Released at Completion of Accident
On August 10, 2014, about 0217 Alaska daylight time, a Piper PA-24-250 airplane, N5158P, sustained substantial damage during an in-flight collision with trees and terrain while attempting to land on Runway 7 at the Big Lake Airport, Big Lake, Alaska. The airplane was being operated by the pilot as a visual flight rules (VFR) local flight under the provisions of 14 Code of Federal Regulations (CFR) Part 91 when the accident occurred. The private pilot was fatally injured, and the sole passenger sustained serious injuries. Dark night, visual meteorological conditions prevailed, and no flight plan had been filed. The flight departed Merrill Field Airport, Anchorage, Alaska, about 0202.
Based on information provided by a family member of the pilot, he had been in Anchorage for a social visit, and would have been returning home to Big Lake when the accident occurred.
According to witnesses, the accident pilot and his passenger were seen at local bar in Anchorage, during the early morning hours of August 10. Various bar patrons reported that both the accident pilot, and his female passenger, left the bar about 0119 on August 10. Archived surveillance video, which was provided to the National Transportation Safety Board (NTSB), confirmed the witness's accounts.
An initial review of archived Federal Aviation Administration (FAA) radar data revealed that, on August 10, about 0202, an unidentified aircraft, believed to be the accident airplane, departed from the Merrill Field Airport. After departure, the radar track proceeded north, towards the Big Lake Airport. As the track approached the Big Lake Airport, it turned west, and appeared to pass over the airport. After passing over the airport in a westerly direction, the track turns 180 degrees back to the airport. The track subsequently disappeared about the time of the accident.
The NTSB investigator-in-charge (IIC) along with another NTSB investigator reached the accident site on the morning of August 10. The initial impact point was marked by two broken treetops, atop 40-foot tall birch trees, located about 50 feet south of the extended runway centerline and 830 feet from the threshold of runway 7. The airplane impacted in a nose low attitude and came to rest upright in an area of gravel-covered terrain alongside a road adjacent to the airport. An on-scene documentation of the wreckage was completed, and a detailed wreckage examination is pending.
During the on-scene wreckage examination, the NTSB IIC recovered a portable global positioning system (GPS) receiver that was capable of storing track and altitude data. The unit was sent to the NTSB's Vehicle Recorders Division for a preliminary examination that revealed the accident flight departed MRI about 0202. After departure, the airplane proceeded north before it turned west, toward the Big Lake airport, and made a straight-in approach to runway 25. As the airplane passed over the threshold of runway 25, the airplane began to climb, and it continued west for about 1 mile before making a 180-degree left turn in the direction of runway 7. A detailed NTSB examination of the archived GPS data is pending.
The closest weather reporting facility is Wasilla Airport, Wasilla, AK, about 9 miles east of the accident site. At 0236, an aviation routine weather report (METAR) was reporting wind 060 degrees at 5 knots, visibility, 10 statute miles, overcast clouds 10,000 feet; 57 degrees F; dew point 43 degrees F; altimeter, 29.63 inHG.