N236HA

Substantial
None

HILLER UH-12ES/N: HA3063

Accident Details

Date
Saturday, February 26, 2011
NTSB Number
WPR11CA146
Location
Colusa, CA
Event ID
20110226X82559
Coordinates
39.269443, -122.068885
Aircraft Damage
Substantial
Highest Injury
None
Fatalities
0
Serious Injuries
0
Minor Injuries
0
Uninjured
2
Total Aboard
2

Probable Cause and Findings

The pilot's failure to maintain an adequate airspeed and an inadvertent encounter with settling with power while flying downwind.

Aircraft Information

Registration
Make
HILLER
Serial Number
HA3063
Engine Type
Reciprocating
Year Built
1977
Model / ICAO
UH-12EUH12
Aircraft Type
Rotorcraft
No. of Engines
1
Seats
4
FAA Model
UH-12E

Registered Owner (Current)

Name
ENDRIES RYAN A
Address
4704 W WISCONSIN AVE
City
MILWAUKEE
State / Zip Code
WI 53208-3048
Country
United States

Analysis

The pilot reported that when the accident occurred he and the owner of the helicopter were flying a reconnaissance flight in preparation for a possible frost control flight the following morning. They were attempting to identify potential obstacles in the area. The departure was west of the accident site and near an almond orchard. As they were flying slowly over the north edge of the orchard the pilot initiated a descent, as well as slowing the helicopter to just above effective translational lift. He turned southbound and noted a 7- to 10-mile-per-hour (mph) tailwind. The pilot reported that the tailwind, coupled with the descent, caused the helicopter to enter a settling with power condition. He stated that due to the close proximity of the trees he was not able to perform a normal recovery of lowering of the collective and applying forward cyclic control. The helicopter descended between a row of trees and the main rotor blades struck the trees. The pilot stated that there were no mechanical malfunctions with the helicopter before the accident.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# WPR11CA146