COUGAR, WA, USA
N609PD
McDonnell Douglas 369D
THE HELICOPTER DEPARTED THE LANDING AREA AFTER A NIGHT PHOTOGRAPHY SESSION ACROSS THE VALLEY FLOOR FROM THE MT. ST. HELENS VOLCANO. PRIOR TO DEPARTURE THE PLT REPORTED THE WEATHER WAS CLOSING IN AND GETTING 'NASTY'. WX CONDITIONS AS REPORTED PRIOR TO DEPARTURE SUPPORT THE CONTENTION A METEOROLOGICAL EVENT CAUSED THE PLT TO LOSE VISUAL CONTACT WITH THE HORIZON AND IMPACT TERRAIN WHILE DESCENDING TO THE VALLEY FLOOR AT CRUISE SPEED.
Source: NTSB Aviation Accident Database
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