Aircraft Accident/Incident Report

Santa Clarita, California 91390
Wednesday, December 17, 2008 9:30 PST

NTSB Narrative Summary Released at Completion of Accident

With the engine started and at flight idle, the ground crewman/mechanic disconnected the ground power cart from the helicopter's external power unit plug. As the ground crewman/mechanic was walking away from the helicopter, the pilot detected that a gust of wind was lifting the aircraft up off of its right main landing gear. The pilot applied full right cyclic to counter the uplifting condition; however, the wind gust continued lifting the helicopter to the left and nose down until the aircraft came to rest inverted. As the helicopter was rolling over, the main rotor blades impacted a fueling truck and struck the ground crewman/mechanic. There was no postcrash fire. The pilot noted that the winds were generally light and variable at the time of engine start, and estimated that the gust was from the east-southeast at up to 15 knots. He further reported that gusty, unpredictable wind conditions were not uncommon in the area. The closest aviation weather reporting station was 22 miles south east of the accident site and was reporting winds from 030 degrees at 7 knots. According to the Kaman K-1200 flight manual, the maximum right quartering tailwind condition for takeoff and landing is from 17 knots to 25 knots. The winds at the accident site most likely exceeded the maximum wind allowed with reference to the helicopter's prevailing wind envelope, which resulted in the helicopter lifting to the left and rolling over.

NTSB Probable Cause Narrative

The helicopter's encounter with a gusty crosswind condition during engine start that exceeded the helicopter's demonstrated wind envelope.

Event Information

Type of Event Accident
Event Date 12/17/2008
Event Day of the Week Wednesday
Time of Event 930
Event Time Zone Pacific Standard Time
Event City Santa Clarita
Event State CALIFORNIA
Event Country --
Zipcode of the event site 91390
Event Date Year 2008
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 342836N
Event Location Longitude 1182737W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 953 Pacific Standard Time
Direction of event from weather observation facility (degrees) 158
Weather Observation Facility ID BUR
Elevation of weather observation facility 778
Distance of event from weather observation facility (units?) 22
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height 3900
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) 3
Wind Direction (degrees magnetic) 30
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.8
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 1
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 25533
NTSB Notification Source Regional Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jul 20 2009 11:46AM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N267KA
NTSB Number WPR09LA057
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name KAMAN
Aircraft Model K-1200
Aircraft Series Identifier --
Aircraft Serial Number A94-0037
Certified Max Gross Weight 12000
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 1
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Dec 16 2008 12:00AM
Airframe hours since last inspection 11
Airframe Hours 5485
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Superior Leasing LLC
Aircraft Owner Street Address --
Aircraft Owner City Grants Pass
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97526
Operator is an individual? No
Operator Name Superior Leasing LLC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Grants Pass
Operator State OR
Operator Country USA
Operator Zip code 97526
Operator Code --
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation External Load
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Positioning
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Santa Clarita
Departure State CA
Departure Country USA
Departure Time --
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code WHP
Destination City Los Angeles
Destination State CA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 6 2010 3:41PM
User who most recently changed record broda
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --