Individually Owned: 150,657
Corporate Owned: 137,281
Ernest H Love Field Airport
Aircraft Accident/Incident Report
Prescott, Arizona 86301
Saturday, June 18, 2011 11:30 MST
NTSB Narrative Summary Released at Completion of Accident
The instructor reported that his student was taxiing the helicopter in a north direction along a taxiway parallel to the runway with a near direct tailwind of 10 knots with gusts to 19. The student started to lose tail rotor authority over the helicopter. At this time the instructor took control of the helicopter and proceeded to apply full left pedal until he regained tail rotor authority and directional control. Because of the strong wind from the south, the instructor opted to keep control of the helicopter until they were airborne and he proceeded to continue their taxi to the displaced threshold of the runway. Upon reaching the displaced threshold, the instructor started a 220 degree turn to the left in order to line up with a takeoff direction to the south into the wind. The instructor reported that half way through the turn the helicopter violently yawed to the left, and he applied full right pedal to cancel the yaw but was unable to arrest the helicopter's left yawing moment. The helicopter landed hard on the skids, damaging the main rotor and severing the tail boom aft of the tail rotor blades hazard guard and before the tail rotor transmission. The pilot reported no mechanical issues with the helicopter prior to the flight. The wind limitation listed in the Pilot's Operating Handbook for the helicopter is 25 knots including any gust factor.
NTSB Probable Cause Narrative
The pilot's inadequate compensation for the wind conditions and failure to maintain directional control of the helicopter during taxi, resulting in a loss of tail rotor effectiveness and a subsequent hard landing.
Event Information
| Type of Event | Accident |
| Event Date | 6/18/2011 |
| Event Day of the Week | Saturday |
| Time of Event | 1130 |
| Event Time Zone | Mountain Standard Time |
| Event City | Prescott |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 86301 |
| Event Date Year | 2011 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 342922N |
| Event Location Longitude | 1122511W |
| Event Location Airport | Ernest H Love Field |
| Event Location Nearest Airport ID | KPRC |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 5045 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Pilot |
| Time of the weather observation | 1753 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 55 |
| Weather Observation Facility ID | KPRC |
| Elevation of weather observation facility | 5045 |
| Distance of event from weather observation facility (units?) | 1 |
| 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) | 27 |
| Dew Point at event time (in degress fahrenheit) | -7 |
| Wind Direction (degrees magnetic) | 170 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 19 |
| Altimeter Setting at event time (in. Hg) | 30.05 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | SA 18/06/2011 17:53-> METAR KPRC 181753Z 17011G19K |
| 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 | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 28605 |
| NTSB Notification Source | FAA Operations Center (LAX) |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Aug 10 2011 12:03PM |
| User who most recently changed record | johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N334DC |
| NTSB Number | WPR11CA264 |
| 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 | ROBINSON HELICOPTER |
| Aircraft Model | R22 BETA |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 3511 |
| 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 | May 12 2011 12:00AM |
| Airframe hours since last inspection | 89 |
| Airframe Hours | 4352 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | GUIDANCE HELICOPTERS INC |
| 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 INC |
| 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 | KPRC |
| Departure City | Prescott |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | MST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | KPRC |
| 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 | Jun 24 2011 6:49PM |
| User who most recently changed record | stam |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 12 |
| Runway Length | 4408 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |