Private Helipad Airport
Aircraft Accident/Incident Report

Las Vegas, Nevada 89124
Tuesady, June 2, 1992 14:00 PDT

NTSB Narrative Summary Released at Completion of Accident

ACCORDING TO STATEMENTS FROM THE PILOT AND TWO GROUND WITNESSES, THE HELICOPTER WAS DEPARTING FROM A PRIVATE HELIPAD AND DURING THE TAKEOFF INITIAL CLIMB A SUDDEN 30 KNOT TAIL WIND WAS ENCOUNTERED. THE HELICOPTER BEGAN TO SETTLE AND THE PILOT HAD TO USE THE REMAINING COLLECTIVE ENERGY TO BALLOON OVER A SET OF POWER LINES. THE AIRCRAFT LANDED HARD AND ROLLED OVER. THE HELIPAD IS SURROUNDED ON THREE SIDES BY TALL TREES AND BUILDINGS, AND, TAKEOFFS MUST BE MADE TO THE EAST. BEFORE THE TAKEOFF BEGAN, THE PILOT SAID THE WINDS WERE FROM THE EAST AT ABOUT 5 KNOTS. DURING THE INITIAL CLIMB THE WINDS SHIFTED FROM A HEAD WIND TO A TAIL WIND AND A 30 KNOT GUST AROSE. THE PILOT SUSPECTED THAT A MICROBURST HAD OCCURRED. TWO GROUND WITNESSES REPORTED THAT THE HELICOPTER LIFTED OFF WITH A LIGHT HEAD WIND AND AS IT BEGAN TO CLIMB A VERY STRONG GUST OF WIND CAME FROM BEHIND THE HELICOPTER.

NTSB Probable Cause Narrative

THE PILOT'S ENCOUNTER WITH A SUDDEN AND STRONG TAIL WIND COMPONENT DURING A CRITICAL PHASE OF FLIGHT WHICH WAS BEYOND THE CAPABILITY OF THE HELICOPTER. A FACTOR IN THE ACCIDENT WAS THE CONFINED NATURE OF THE HELIPAD WITH HIGH OBSTACLES AND POWER LINES.

Event Information

Type of Event Accident
Event Date 6/2/1992
Event Day of the Week Tuesday
Time of Event 1400
Event Time Zone Pacific Daylight Time
Event City LAS VEGAS
Event State NEVADA
Event Country --
Zipcode of the event site 89124
Event Date Year 1992
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport PRIVATE HELIPAD
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 10000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 50
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 30
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 3037
NTSB Notification Source --
NTSB Notification Date Jun 2 1992 12:00AM
NTSB Notification Time 1515
Fiche Number and/or location -used to find docket information 46629
Date of most recent change to record Dec 11 2000 3:00PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2301C
NTSB Number LAX92LA229
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name ROBINSON
Aircraft Model R-22B
Aircraft Series Identifier R-22B
Aircraft Serial Number 1926
Certified Max Gross Weight 1670
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection May 14 1992 12:00AM
Airframe hours since last inspection 27
Airframe Hours 1014
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name HELICOPTER SERVICES OF NEVADA
Aircraft Owner Street Address 135 E. RENO AVENUE
Aircraft Owner City LAS VEGAS
Aircraft Owner State NV
Aircraft Owner Country
Aircraft Owner Zipcode 89119
Operator is an individual? --
Operator Name FREDRICK G. CLEEVES
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address HCR 32 #3135
Operator City LAS VEGAS
Operator State NV
Operator Country
Operator Zip code 89124
Operator Code
Owner has at least one certificate None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 1400
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --