Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Chino Valley, Arizona 86323
Sunday, March 17, 2013 17:00 MST
NTSB Narrative Summary Released at Completion of Accident
During descent for an off-airport pinnacle landing, the helicopter encountered a downdraft about 75 to 100 feet above ground level (agl), and the pilot receiving instruction increased collective input. The flight instructor advised the pilot receiving instruction to be less aggressive using the collective as the flight continued to the landing area. As the helicopter descended through about 10 to 25 feet agl, it encountered a second downdraft, and the pilot receiving instruction increased collective again, which was followed by a decrease in rotor rpm. The flight instructor took control of the helicopter as it contacted the ground and then became airborne again. The helicopter yawed to the right and landed upright on sloping terrain. Postaccident examination of the helicopter revealed that the tailboom was substantially damaged just aft of the fuselage attach point. The pilots reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
NTSB Probable Cause Narrative
The pilot receiving instruction’s failure to maintain rotor rpm during the pinnacle landing. Contributing to the accident was the flight instructor’s delayed remedial action.
Event Information
| Type of Event | Accident |
| Event Date | 3/17/2013 |
| Event Day of the Week | Sunday |
| Time of Event | 1700 |
| Event Time Zone | Mountain Standard Time |
| Event City | Chino Valley |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 86323 |
| Event Date Year | 2013 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 345108N |
| Event Location Longitude | 1122450W |
| 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 | 1653 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 3 |
| Weather Observation Facility ID | PRC |
| Elevation of weather observation facility | 5045 |
| Distance of event from weather observation facility (units?) | 13 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 10000 |
| Sky/Lowest/Cloud Conditions | Few |
| 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) | 21 |
| Dew Point at event time (in degress fahrenheit) | -21 |
| Wind Direction (degrees magnetic) | 300 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 17 |
| 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 | METAR KPRC 172353Z 30017KT 10SM FEW100 21/M21 A299 |
| 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 | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 31309 |
| NTSB Notification Source | FAA FSDO - Scottsdale, AZ |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Apr 19 2013 3:08PM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N223G |
| NTSB Number | WPR13CA155 |
| 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 | 3211 |
| 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 | Feb 25 2013 12:00AM |
| Airframe hours since last inspection | 52 |
| Airframe Hours | 7899 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | GUIDANCE HELICOPTERS INC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | PRESCOTT |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 86301-6132 |
| Operator is an individual? | No |
| Operator Name | GUIDANCE HELICOPTERS INC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | PRESCOTT |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 86301-6132 |
| 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 | No |
| Departure Airport Code | PRC |
| Departure City | Prescott |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 1630 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | PRC |
| 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 | Apr 19 2013 3:08PM |
| 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 | -- |