St George Municipal Airport
Aircraft Accident/Incident Report

St. George, Utah 84770
Thursday, May 19, 2005 15:41 MDT

NTSB Narrative Summary Released at Completion of Accident

The flight instructor said the student entered the autorotation and completed a 180-degree turn at an altitude of approximately 250 feet agl. There was a noticeable lateral vibration of the airframe and a rapid increase in descent rate. The instructor took control, advanced the throttle, and noticed that the rotor and engine rpm needles were "joined" just below 100 percent rpm. He said he did not understand why the helicopter had a descent rate greater than 1,500 feet per minute when the engine was at full power and rotor rpm was at 100 per cent rpm. Neither pilot heard the LOW ROTOR RPM warning. The instructor attempted to flare but there was insufficient time, and the helicopter impacted terrain and rolled over. Post-accident examination revealed no mechanical anomalies. There were dust devils in the area after the accident occurred.

NTSB Probable Cause Narrative

the pilot's improper autorotation. A contributing factor was the flight instructor's inadequate supervision of the pilot.

Event Information

Type of Event Accident
Event Date 5/19/2005
Event Day of the Week Thursday
Time of Event 1541
Event Time Zone Mountain Daylight Time
Event City St. George
Event State UTAH
Event Country --
Zipcode of the event site 84770
Event Date Year 2005
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport St George Municipal
Event Location Nearest Airport ID SGU
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 8
Degrees magnetic from airport --
Airport Elevation 2941
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1555 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 300
Weather Observation Facility ID SGU
Elevation of weather observation facility 2941
Distance of event from weather observation facility (units?) 8
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.92
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 18451
NTSB Notification Source FAA Comm Ctr
NTSB Notification Date May 19 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 27 2005 6:51AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Salt Lake City, Utah

Aircraft Involved

Aircraft #1

Aircraft Registration Number N983KC
NTSB Number DEN05LA081
Missing Aircraft Indicator --
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 R22 Beta
Aircraft Series Identifier --
Aircraft Serial Number 2811
Certified Max Gross Weight 1370
Aircraft Category Helicopter
Aircraft Registration Class --
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 Apr 1 2005 12:00AM
Airframe hours since last inspection 60.4
Airframe Hours 2566.7
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name KNK Leasing
Aircraft Owner Street Address 229 East Saint George Boulevard, Suite 101
Aircraft Owner City St. George
Aircraft Owner State UT
Aircraft Owner Country USA
Aircraft Owner Zipcode 84770
Operator is an individual? No
Operator Name A Flight Above
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 425 South Donlee
Operator City St. George
Operator State UT
Operator Country USA
Operator Zip code 84770
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code SGU
Departure City St. George
Departure State UT
Departure Country USA
Departure Time 1500
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code SGU
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 25 2005 1:20PM
User who most recently changed record MCBM
Since inspection or accident Last Inspection
Event Location Runway Number and Location 16
Runway Length 6606
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --