Tuesday, October 13, 2020

Hard Landing: Robinson R22 Beta, N4066S; accident occurred October 17, 2019 in Overton, Clark County, Nevada

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Las Vegas, Nevada

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms


Location: Overton, NV
Accident Number: GAA20CA035
Date & Time: 10/17/2019, 1620 PDT
Registration: N4066S
Aircraft: Robinson R22
Aircraft Damage: Substantial
Defining Event: Hard landing
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Instructional


The flight instructor reported that he told the pilot receiving instruction in the helicopter to shoot an approach to a sandbar in a riverbed. The pilot approached to the south, and the wind was between about 20 to 25 knots from the south. About 20 ft above ground level, the instructor took the flight controls due to a steep and fast approach and initiated a go-around. He performed a climbing left turn to the north, and subsequently the helicopter descended, and he was unable to maneuver it into the wind. The helicopter landed hard, bounced, and yawed right. The helicopter contacted the ground again and rolled onto its left side. The main rotor blades struck the ground, and the tailboom separated. The helicopter sustained substantial damage to the tailboom. The instructor reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain a proper approach and the flight instructor's subsequent failure to maintain an adequate climb rate during an attempted go-around in gusting tailwind conditions, which resulted in a hard landing and dynamic rollover.


Climb rate - Not attained/maintained (Cause)
Airspeed - Not attained/maintained (Cause)

Personnel issues
Aircraft control - Instructor/check pilot (Cause)
Aircraft control - Student pilot (Cause)

Environmental issues
Gusts - Effect on operation (Cause)
Tailwind - Effect on operation (Cause)

Factual Information

History of Flight

Hard landing (Defining event)

Collision with terr/obj (non-CFIT)

Dynamic rollover

Flight Instructor Information

Certificate: Flight Instructor; Commercial
Age: 35, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): Helicopter
Restraint Used:
Instrument Rating(s): Helicopter
Second Pilot Present: Yes
Instructor Rating(s): Helicopter
Toxicology Performed: No
Medical Certification: Class 2 Without Waivers/Limitations
Last FAA Medical Exam: 01/25/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent: 03/06/2019
Flight Time:  (Estimated) 1845 hours (Total, all aircraft), 1450 hours (Total, this make and model), 1700 hours (Pilot In Command, all aircraft), 120 hours (Last 90 days, all aircraft), 50 hours (Last 30 days, all aircraft), 6 hours (Last 24 hours, all aircraft)

Pilot Information

Certificate: Private
Age: 20, Male
Airplane Rating(s): None
Seat Occupied: Right
Other Aircraft Rating(s): Helicopter
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 02/18/2019
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time:   (Estimated) 120 hours (Total, all aircraft), 120 hours (Total, this make and model), 60 hours (Pilot In Command, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Robinson
Registration: N4066S
Model/Series: R22 BETA
Aircraft Category: Helicopter
Year of Manufacture:1990 
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 1508
Landing Gear Type: Skid;
Seats: 2
Date/Type of Last Inspection: 10/14/2019, 100 Hour
Certified Max Gross Wt.: 1730 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 14600 Hours as of last inspection
Engine Manufacturer: Lycoming
ELT: Not installed
Engine Model/Series: O-320-B2C
Registered Owner: California Aviation Services Inc
Rated Power: 160 hp
Operator: California Aviation Services Inc
Operating Certificate(s) Held: Pilot School (141) 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KLSV, 1870 ft msl
Distance from Accident Site: 35 Nautical Miles
Observation Time: 2358 UTC
Direction from Accident Site: 244°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 16 knots / 22 knots
Turbulence Type Forecast/Actual: None / None
Wind Direction: 150°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.53 inches Hg
Temperature/Dew Point: 28°C / -1°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Bullhead City, AZ (IFP)
Type of Flight Plan Filed: None
Destination: Overton, NV (U08)
Type of Clearance: None
Departure Time: 1430 MST
Type of Airspace: Class G

Wreckage and Impact Information

Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 36.510000, -114.375833 (est)

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