Aircraft Accident/Incident Report

Mc Cool Junction, Nebraska 68401
Wednesday, September 19, 2012 12:30 CDT

NTSB Narrative Summary Released at Completion of Accident

After takeoff, about 400 feet above ground level and about 50 knots airspeed, the flight instructor reduced the throttle to idle so the student pilot could demonstrate an autorotation. The student dropped the collective to enter the autorotation, and the engine stopped producing power; the helicopter descended rapidly and landed hard. A postaccident examination of the helicopter revealed an obstructed air filter. It is likely that the student lowered the collective too quickly, which, combined with the obstructed air filter, created a rich fuel mixture and loss of engine power. The student pilot mismanaged the autorotation and the instructor did not intervene in a timely manner to prevent the hard landing.

NTSB Probable Cause Narrative

The flight instructor’s inadequate supervision of the student pilot’s entry into the autorotation, which resulted in a hard landing. Contributing to the accident was the loss of engine power as a result of the student pilot rapidly lowering the helicopter’s collective and the partly obstructed air filter.

Event Information

Type of Event Accident
Event Date 9/19/2012
Event Day of the Week Wednesday
Time of Event 1230
Event Time Zone Central Daylight Time
Event City Mc Cool Junction
Event State NEBRASKA
Event Country --
Zipcode of the event site 68401
Event Date Year 2012
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 --
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1235 Central Daylight Time
Direction of event from weather observation facility (degrees) 320
Weather Observation Facility ID KJYR
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) 13
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) 5
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.85
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report METAR KJYR 191735Z AUTO 25012KT 10SM CLR 32/05 A29
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) 31345
NTSB Notification Source LNK FSDO
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record May 13 2013 12:28PM
User who most recently changed record aguj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N37754
NTSB Number CEN12LA648
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 269A
Aircraft Series Identifier --
Aircraft Serial Number 67-16774
Certified Max Gross Weight 1550
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 1 2013 12:00AM
Airframe hours since last inspection --
Airframe Hours 4706
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name STAR CITY FLYING CLUB LLC
Aircraft Owner Street Address --
Aircraft Owner City LINCOLN
Aircraft Owner State NE
Aircraft Owner Country USA
Aircraft Owner Zipcode 68522-9200
Operator is an individual? No
Operator Name STAR CITY FLYING CLUB LLC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City LINCOLN
Operator State NE
Operator Country USA
Operator Zip code 68522-9200
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code --
Departure City McCool Junction
Departure State NE
Departure Country USA
Departure Time 1230
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City McCool Junction
Destination State NE
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 6 2013 2:49PM
User who most recently changed record aguj
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --