Sunday, March 08, 2020

Dynamic Rollover: Bell 206B-3 JetRanger III, N218GH; accident occurred August 27, 2019 at Gillespie Field Airport (KSEE), El Cajon, San Diego County, California

View of damage to the tail rotor drive system. 
Federal Aviation Administration

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; San Diego, California

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: San Diego, CA
Accident Number: GAA19CA519
Date & Time: 08/27/2019, 1410 PDT
Registration: N218GH
Aircraft: Bell 206
Aircraft Damage: Substantial
Defining Event: Dynamic rollover
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Business

The helicopter pilot reported that, after landing on the helicopter landing platform, he decided to reposition the helicopter on the platform. He increased collective and, "felt as if the nose was turning or yawing to the right."

To correct the right yaw he applied, "more left pedal but the aircraft continued in its movement." The helicopter rolled to the right and the main rotor blades struck the ground. The helicopter came to rest on its right side.

The helicopter sustained substantial damage to the main and tail rotor drive system.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation. 

Pilot Information

Certificate: Commercial
Age: 54, Male
Airplane Rating(s): None
Seat Occupied: Right
Other Aircraft Rating(s): Helicopter
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed:No 
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 07/17/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent: 08/10/2018
Flight Time:  (Estimated) 2313 hours (Total, all aircraft), 392 hours (Total, this make and model), 2238 hours (Pilot In Command, all aircraft), 85 hours (Last 90 days, all aircraft), 22 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Bell
Registration: N218GH
Model/Series: 206 B
Aircraft Category: Helicopter
Year of Manufacture: 1981
Amateur Built: No
Airworthiness Certificate: Other
Serial Number: 3470
Landing Gear Type: Skid
Seats: 4
Date/Type of Last Inspection: 08/08/2019, 100 Hour
Certified Max Gross Wt.: 3200 lbs
Time Since Last Inspection:
Engines: 1 Turbo Shaft
Airframe Total Time: 15412 Hours as of last inspection
Engine Manufacturer: Rolls Royce
ELT: C126 installed, not activated
Engine Model/Series: 250C20
Registered Owner: Helicopters Unlimited Llc
Rated Power: 420 hp
Operator: Angel City Air, Inc.
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KSEE, 387 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 2120 UTC
Direction from Accident Site: 255°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 9 knots /
Turbulence Type Forecast/Actual:
Wind Direction: 230°
Turbulence Severity Forecast/Actual:
Altimeter Setting: 29.83 inches Hg
Temperature/Dew Point: 31°C / 17°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: San Diego, CA (SEE)
Type of Flight Plan Filed: None
Destination: San Diego, CA (SEE)
Type of Clearance: VFR
Departure Time: 1325 PDT
Type of Airspace: Class D

Airport Information

Airport: Gillespie Field (SEE)
Runway Surface Type: Concrete
Airport Elevation: 387 ft
Runway Surface Condition: Dry
Runway Used: N/A
IFR Approach: None
Runway Length/Width: VFR Approach/Landing: Full Stop

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None 
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 32.826111, -116.972500 (est)

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