Aircraft Accident/Incident Report

Mountain Spring, Nevada 89101
Monday, February 24, 1997 13:15 PST

NTSB Narrative Summary Released at Completion of Accident

The pilot encountered turbulent wind conditions on short final approach to the mountain helipad. He aborted his first two approaches and attempted a third. During the third approach he encountered the turbulent conditions again. He attempted to maneuver the helicopter by turning downslope and avoid the upsloping terrain. While in the turn the helicopter struck high vegetation and then the ground. The pilot reported that he checked weather by listening to the Reno Flight Service Station recorded weather. A SIGMENT was in effect at the time and was forecasting severe turbulence. The SIGMENT stated, 'Strong updrafts and down drafts over mountains and also low level wind shear expected.' The elevation of the mountain helipad was 8,514 feet msl.

NTSB Probable Cause Narrative

the pilot's poor weather evaluation and the decision to continue to attempt to land during forecast adverse weather conditions.

Event Information

Type of Event Accident
Event Date 2/24/1997
Event Day of the Week Monday
Time of Event 1315
Event Time Zone Pacific Standard Time
Event City MOUNTAIN SPRING
Event State NEVADA
Event Country --
Zipcode of the event site 89101
Event Date Year 1997
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 Partial - limited by pilot
Investigator's weather source Weather Observation Facility
Time of the weather observation 1256 Pacific Standard Time
Direction of event from weather observation facility (degrees) 46
Weather Observation Facility ID LAS
Elevation of weather observation facility 2179
Distance of event from weather observation facility (units?) 19
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) -12
Wind Direction (degrees magnetic) 20
Variable Wind Indicator Unknown
Wind Speed (knots) 19
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious 1
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 295
NTSB Notification Source --
NTSB Notification Date Feb 24 1997 12:00AM
NTSB Notification Time 1505
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:08PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N42SS
NTSB Number LAX97LA110
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Bell
Aircraft Model 206B
Aircraft Series Identifier 206B
Aircraft Serial Number 3345
Certified Max Gross Weight 3200
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 21 1997 12:00AM
Airframe hours since last inspection 20
Airframe Hours 6597
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name SUNDANCE HELICOPTERS, INC.
Aircraft Owner Street Address 135 EAST RENO
Aircraft Owner City LAS VEGAS
Aircraft Owner State NV
Aircraft Owner Country
Aircraft Owner Zipcode 89119
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code KBMA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code LAS
Departure City LAS VEGAS
Departure State NV
Departure Country
Departure Time 1240
Departure Time Zone PST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --