Mogollon Airpark (Pvt) Airport
Aircraft Accident/Incident Report

Overgaard, Arizona 85933
Friday, September 13, 2002 8:10 MST

NTSB Narrative Summary Released at Completion of Accident

The helicopter sustained substantial damage during a hard landing and rollover after performing a practice autorotation. Due to excessive forward airspeed, the pilot aborted the maneuver. The application of the collective did not stop the descent. He committed to a full down autorotation and flared about 50 feet above ground level. As the helicopter contacted the ground, it pivoted on its right skid, and came to rest on its right side. Wind conditions were not checked prior to entering the autorotation, and he subsequently determined that he attempted it with a tailwind.

NTSB Probable Cause Narrative

The pilot's failure to check the wind direction prior to practicing autorotations, and his misjudged flare maneuver. The tailwind was a factor.

Event Information

Type of Event Accident
Event Date 9/13/2002
Event Day of the Week Friday
Time of Event 810
Event Time Zone Mountain Standard Time
Event City Overgaard
Event State ARIZONA
Event Country --
Zipcode of the event site 85933
Event Date Year 2002
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 342330N
Event Location Longitude 1103200W
Event Location Airport Mogollon Airpark (PVT)
Event Location Nearest Airport ID PVT
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 45
Airport Elevation 6657
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1245 Mountain Standard Time
Direction of event from weather observation facility (degrees) 120
Weather Observation Facility ID KSOW
Elevation of weather observation facility 6415
Distance of event from weather observation facility (units?) 27
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 5000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 30
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.12
Density Altitude (feet) 8569
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 14733
NTSB Notification Source FAA
NTSB Notification Date Sep 13 2002 12:00AM
NTSB Notification Time 1210
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Feb 5 2004 4:26PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-SDL-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N104BJ
NTSB Number LAX02LA284
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 Siemens
Aircraft Model Rotorway Exec 162 F
Aircraft Series Identifier --
Aircraft Serial Number 6194
Certified Max Gross Weight 1500
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
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 Continuous Airworthiness
Date of Last Inspection Jun 15 2002 12:00AM
Airframe hours since last inspection 22
Airframe Hours 178
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name JIMMIE SIEMENS
Aircraft Owner Street Address --
Aircraft Owner City YUMA
Aircraft Owner State AZ
Aircraft Owner Country USA
Aircraft Owner Zipcode 85364
Operator is an individual? No
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 --
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code AZ82
Departure City Overgaard
Departure State AZ
Departure Country USA
Departure Time 800
Departure Time Zone TL
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code AZ82
Destination City Overgaard
Destination State AZ
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Nov 25 2003 5:03PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --