Aviation Accident Summaries

Aviation Accident Summary NYC96LA013

HONSDALE, PA, USA

Aircraft #1

N39964

Piper PA-32

Analysis

The pilot obtained a weather briefing and filed an IFR flight plan with an Automated Flight Service Station (AFSS). After takeoff, he climbed to his cruising altitude of 8,000 feet, which was above the clouds. En route he encountered strong headwinds, and requested a descent to 6,000 feet. ATC issued the pilot an initial descent to 7,000 feet. During the descent, he encountered severe turbulence and icing. After descending below the clouds, the pilot could not maintain altitude and made a forced landing downwind to a nearby airport. During landing, the airplane was blown off of the runway into the runway lights. The reported winds were 250 degrees at 14 knots gusting to 24 knots. During the weather briefing with the AFSS, the pilot was issued an AIRMET for light to moderate mixed/rime icing, in the clouds and precipitation, from the freezing level to 10,000 feet, and isolated severe icing in the clouds. He was given the freezing level along his route to be between 2,000 and 4,000 feet. The briefer also gave the pilot the forecast for 'strong westerly winds,' which included winds at 9,000 feet, from 280 degrees at 38 knots. The airplane was not equipped with anti-icing, or deicing equipment, except for a heated pitot tube.

Factual Information

On October 16, 1995, at 1130 eastern daylight time, a Piper PA-32-260, N39964, was substantially damaged during a forced landing to the Cherry Ridge Airport, Honesdale, Pennsylvania. The private pilot and passenger were not injured. Visual meteorological conditions prevailed, for the personal flight that originated at Windsor Locks, Connecticut, at 1030. An IFR flight plan had been filed for the flight conducted under 14 CFR Part 91. The pilot obtained a weather briefing, and filed an IFR flight plan to Columbus, Ohio, with the Burlington Automated Flight Service Station (AFSS). After takeoff from Windsor Locks, he climbed to his cruising altitude of 8,000 feet, which was above the clouds. Near Wilkes-Barre, Pennsylvania, he encountered 30 to 40 knot head winds, and requested a descent to 6,000 feet. The Air Traffic Control facility advised the pilot of turbulence at 6,000 feet, and issued the pilot an initial descent to 7,000 feet. In the NTSB Form 6120.1/2, the pilot stated: In the descent I encountered severe turbulence with severe icing...I had previously put on the pitot heat, but in spite of it...the main gear dropped because of icing...below the clouds at 5,500, I was unable to maintain altitude, problem of trim control, I was able to retract [the landing] gear. ATC gave me the direction to nearest airport...and I made a forced landing downwind and crosswind on [runway] 17. I was blown off to the left of the runway onto the grass where I made contact with runway lights. A review of the audio tape of the pilot's AFSS weather briefing, revealed that the AFSS briefer issued the pilot AIRMET Zulu. The AIRMET was for light to moderate mixed/rime icing, in the clouds and precipitation, from the freezing level to 10,000 feet, and isolated severe icing in the clouds. The briefer stated that the area covered the pilot's route of flight from western Pennsylvania, to Columbus, Ohio. The briefer stated that the freezing level near Pittsburgh, Pennsylvania, was between 2,000 and 4,000 feet. The briefer also gave the pilot the forecast for "strong westerly winds," which included specific winds at 9,000 feet, from 280 degrees at 38 knots, near Wilkes-Barre, Pennsylvania. The airplane, N39964, was not equipped with anti-icing, or deicing equipment, except for a heated pitot tube.

Probable Cause and Findings

the pilot's improper evaluation of the weather briefing, and his decision to fly into known forecasted moderate to severe icing conditions. Factors in the accident were the adverse weather conditions encountered during the flight and landing.

 

Source: NTSB Aviation Accident Database

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