Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Prescott, Arizona 86301
Friday, October 29, 2010 16:00 MST
NTSB Narrative Summary Released at Completion of Accident
A certificated flight instructor (CFI) and a student were practicing 180-degree autorotations. The CFI noted that, during the initial entry into the autorotation, the student pilot maintained proper rotor rpm and airspeed. About halfway through the 180-degree turn, the helicopter became nose-low and the airspeed increased. As the helicopter transitioned through about three-quarters of the turn, the CFI took authority of the helicopter's controls and attempted to correct the airspeed. The CFI stated that she was unable to correct and the helicopter touched down hard in an open dirt field. The helicopter subsequently rolled over and came to rest on its left side. Examination of the helicopter revealed that the tail boom was separated and the fuselage sustained structural damage. The CFI reported that no mechanical malfunctions existed during the practice autorotation and accident sequence.
NTSB Probable Cause Narrative
The student pilot's failure to maintain the proper airspeed and the certificated flight instructor's inadequate supervision and delayed remedial action during a practice autorotation, which resulted in a hard landing and rollover.
Event Information
| Type of Event | Accident |
| Event Date | 10/29/2010 |
| Event Day of the Week | Friday |
| Time of Event | 1600 |
| Event Time Zone | Mountain Standard Time |
| Event City | Prescott |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 86301 |
| Event Date Year | 2010 |
| Event Date Month | 10 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 343916N |
| Event Location Longitude | 1122510W |
| 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 | 1553 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | PRC |
| Elevation of weather observation facility | 5045 |
| Distance of event from weather observation facility (units?) | 7 |
| Time Zone of the weather observation | MST |
| 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) | 23 |
| Dew Point at event time (in degress fahrenheit) | -1 |
| Wind Direction (degrees magnetic) | 210 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 11 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.16 |
| 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) | 27658 |
| NTSB Notification Source | FAA 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 | Nov 22 2010 5:13PM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N844SH |
| NTSB Number | WPR11CA031 |
| 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 HELICOPTER |
| Aircraft Model | R22 BETA |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 3824 |
| 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 | Oct 26 2010 12:00AM |
| Airframe hours since last inspection | 13 |
| Airframe Hours | 2953 |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | Guidance Helicopters |
| Aircraft Owner Street Address | 6565 Crystal Lane |
| Aircraft Owner City | Prescott |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 86301 |
| Operator is an individual? | No |
| Operator Name | Guidance Helicopters |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 6565 Crystal Lane |
| Operator City | Prescott |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 86301 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| 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 | Yes |
| Departure Airport Code | -- |
| Departure City | Prescott |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 1515 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | Prescott |
| Destination State | AZ |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Nov 22 2010 5:13PM |
| User who most recently changed record | stam |
| 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 | -- |