Aircraft Accident/Incident Report

Arapahoe, Nebraska 68922
Wednesday, September 2, 2009 10:40 CDT

NTSB Narrative Summary Released at Completion of Accident

During cruise flight in a reciprocating single-engine helicopter, the pilot heard a loud noise and felt a vibration. The pilot immediately entered an autorotation and turned the flight controls over to the flight instructor. The flight instructor elected to continue the autorotation to an open field. During the landing the helicopter's landing skids stuck into the soft terrain, causing the helicopter's nose to pitch down and tail to pitch up. The main rotor blades impacted the tail boom, severing it; the helicopter subsequently rolled onto its side. An examination of the helicopter failed to find a reason for the noise and vibration.

NTSB Probable Cause Narrative

A sudden vibration for undetermined reasons.

Event Information

Type of Event Accident
Event Date 9/2/2009
Event Day of the Week Wednesday
Time of Event 1040
Event Time Zone Central Daylight Time
Event City Arapahoe
Event State NEBRASKA
Event Country --
Zipcode of the event site 68922
Event Date Year 2009
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 1200
Lowest Non-Ceiling Height 1200
Sky/Lowest/Cloud Conditions Partial Obscuration
Sky Condition for Lowest Ceiling Obscured
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 14
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.04
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 26575
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Feb 3 2010 2:30PM
User who most recently changed record bowl
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N58163
NTSB Number CEN09LA558
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 269C
Aircraft Series Identifier --
Aircraft Serial Number 740334
Certified Max Gross Weight --
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 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 26 2009 12:00AM
Airframe hours since last inspection --
Airframe Hours 2310
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name CAVALEA CONTINENTAL FREIGHT INC
Aircraft Owner Street Address PO BOX 636
Aircraft Owner City CHANNAHON
Aircraft Owner State IL
Aircraft Owner Country USA
Aircraft Owner Zipcode 60410-0636
Operator is an individual? No
Operator Name CAVALEA CONTINENTAL FREIGHT INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address PO BOX 636
Operator City CHANNAHON
Operator State IL
Operator Country USA
Operator Zip code 60410-0636
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) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code 37V
Departure City Arapahoe
Departure State NE
Departure Country USA
Departure Time --
Departure Time Zone --
Destination Same as Local Flt --
Destination Airport Code AKO
Destination City Colorado Plains
Destination State CO
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 29 2010 10:17AM
User who most recently changed record hatc
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --