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ASN Wikibase Occurrence # 133477
Last updated: 27 July 2017
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Date:17-MAR-1986
Time:13:45
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different
Aérospatiale AS 350D
Owner/operator:Cri Helicopters
Registration: N88GT
C/n / msn: 1071
Fatalities:Fatalities: 0 / Occupants: 6
Other fatalities:0
Airplane damage: Written off (damaged beyond repair)
Category:Accident
Location:Tahoe Valley, El Dorado County, California -   United States of America
Phase: En route
Nature:Passenger
Departure airport:Tahoe Valley, California
Destination airport:
Investigating agency: National Transport Safety Bureau (NTSB)
Narrative:
THE HELICOPTER COLLIDED WITH TREES AND CRASHED IN ROUGH MOUNTAINOUS TERRAIN AT TAHOE VALLEY, EL DORADO COUNTY, CALIFORNIA, ON MARCH 17, 1986 DURING TAKE-OFF. THE AIRCRAFT WAS SHUTTLING SKIERS FROM A LANDING AREA LOCATED AT APPROXIMATELY 8,300 FT AMSL TO A RIDGELINE AT 11,000 FT AMSL. THE PILOT REPORTED THE ENGINE GAS TEMPERATURE (T-4) WAS AT 790 DEGREES (C), OVER THE TAKEOFF 5 MIN LIMITATION. THE PILOT ATTEMPTED A NORMAL TAKEOFF. AS THE AIRCRAFT REACHED AN ALTITUDE ABOVE THE 80 FT TALL TREES BELOW TRANSLATIONAL LIFT, IT SHUDDERED, THEN SPUN COUNTER-CLOCKWISE. THE OGE MAXIMUM RECOMMENDED WEIGHT WAS COMPUTED AT 1,812 KILOGRAMS OR 3,995.5 LBS. THE WEIGHT CALCULATED BY THE PILOT AFTER THE ACCIDENT WAS 3,995 LBS.

EXAMINATION OF THE AIRCRAFT WEIGHT AND BALANCE RECORDS REVEALED THAT COMPONENTS
WERE INSTALLED ON THE AIRCRAFT AFTER IT HAD BEEN WEIGHED. THE PILOT DID NOT INCLUDE ALL THE ADDITIONAL COMPONENTS IN HIS CALCULATIONS.

Sources:

1. NTSB: http://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20001213X33100&key=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=88GT
3. http://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20001213X33100&key=1
4. http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=11571


Revision history:

Date/timeContributorUpdates
29-Jun-2014 02:51 Dr. John Smith Updated [Time, Location, Nature, Departure airport, Source, Narrative]
21-Dec-2016 19:26 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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