FAA Flight Standards District Office: FAA Portland FSDO-65
Nonscheduled 14 CFR Part 135: Air Taxi & Commuter
Accident occurred Wednesday, March 02, 2016 in Rockland, ME
Aircraft: BEECH 99, registration: N198WA
Injuries: 1 Uninjured.
This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
On March 2, 2016, about 0800 eastern standard time, a Beech 99A, N198WA, operated by Wiggins Airways Inc., was substantially damaged during approach to Knox County Regional Airport (RKD), Rockland, Maine, following an encounter with severe turbulence. The commercial pilot was not injured. Instrument meteorological conditions prevailed and an instrument flight rules flight plan was filed for the flight. The non-scheduled cargo flight was operated under the provisions of Title 14 Code of Federal Regulations Part 135 and originated from Manchester Airport (MHT), Manchester, New Hampshire, around 0730.
According to the pilot, she was in instrument conditions on descent for the instrument landing system (ILS) approach to RKD and she was encountering continuous light to moderate turbulence. When the airplane was slightly below 2,000 feet mean sea level, the airspeed was 130 knots, she experienced severe turbulence. She executed a missed approach while still encountering moderate turbulence. She decided not to attempt another approach to RKD and diverted to Bangor International Airport (BGR) Bangor, Maine. She stated that the airplane continued to experienced light to moderate turbulence enroute to BGR. She landed at BGR and after shutting down the airplane, she entered the severe turbulence encounter in the aircraft log book.
Examination of the airplane by a Federal Aviation Administration inspector revealed that both wings had skin deformation on top of the wings and the fuselage side skins were wrinkled.
Further examination by a local repair station revealed that there was substantial damage to the airplane on the top wing skin, right wing root between fuselage and nacelle just aft of main spar. The right wing root to fuselage fillet fairing was also damaged just aft of main spar. There were several other areas noted with wrinkled skin on the left and right wings.