Accident Eurocopter EC 120B Colibri N255SD,
ASN logo
ASN Wikibase Occurrence # 302642
 
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:Sunday 11 December 2022
Time:14:17 LT
Type:Silhouette image of generic EC20 model; specific model in this crash may look slightly different    
Eurocopter EC 120B Colibri
Owner/operator:Sacramento County Sheriffs Office
Registration: N255SD
MSN: 1102
Year of manufacture:2000
Total airframe hrs:10783 hours
Engine model:Turbomecca Arrius a2f
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:near Rancho Cordova, CA -   United States of America
Phase: Landing
Nature:Training
Departure airport:Sacramento-Mather Airport, CA (MHR/KMHR)
Destination airport:Rancho Cordova, CA
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The flight instructor reported that the pilot receiving instruction was practicing an offsite landing in an open area. While descending on approach to the site, the airspeed decayed to 35 kts. The flight instructor prompted for an increase in airspeed, the pilot flying acknowledged, applied forward cyclic, right pedal, and continued turning left into the wind. They encountered an uncommanded left yaw and the pilot receiving instruction added right pedal until he reached full deflection. The flight instructor then assumed control of the helicopter and pushed forward on the cyclic as he lowered the collective. The instructor attempted to recover from the uncommanded left yaw; however, but the helicopter spun several times. Unable to gain forward airspeed, the flight instructor began a descent. The helicopter subsequently landed hard substantially damaging the underside of the fuselage.
The flight instructor reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Probable Cause: The pilot receiving instruction's loss of helicopter control during landing with a crosswind, and the flight instructor's delayed remedial action.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: WPR23LA068
Status: Investigation completed
Duration: 6 months
Download report: Final report

Sources:

NTSB WPR23LA068
FAA register: https://registry.faa.gov/aircraftinquiry/Search/NNumberResult

https://flightaware.com/live/flight/N255SD

Location

Media:

Revision history:

Date/timeContributorUpdates
30-May-2023 07:24 Ron Averes Updated
16-Jun-2023 06:33 ASN Update Bot Updated
16-Jun-2023 06:35 harro Updated

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314
www.FlightSafety.org