Aircraft Accident/Incident Report

Oak Island, North Carolina 28465
Thursday, June 14, 2012 16:37 EDT

NTSB Narrative Summary Released at Completion of Accident

According to the pilot, the helicopter was established in cruise flight at 600 feet mean sea level and an airspeed of 75 knots when she entered a practice autorotation over the ocean, with the intention of a power recovery. The pilot lowered the collective pitch to the full down position and rolled the throttle to the full off position. The pilot then raised the collective pitch and the main rotor rpm started to decrease and the low main rotor audio sounded. The pilot increased the throttle and increased collective, and the main rotor rpm continued to decrease. The helicopter continued to descend until it impacted the ocean and rolled over inverted. The pilot and pilot-rated passenger stated there were no mechanical problems with the helicopter.

NTSB Probable Cause Narrative

The pilot's failure to properly execute the helicopter practice autorotation recovery, which resulted in a collision with the water.

Event Information

Type of Event Accident
Event Date 6/14/2012
Event Day of the Week Thursday
Time of Event 1637
Event Time Zone Eastern Daylight Time
Event City Oak Island
Event State NORTH CAROLINA
Event Country --
Zipcode of the event site 28465
Event Date Year 2012
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 335336N
Event Location Longitude 0780454W
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 Weather Observation Facility
Time of the weather observation 1635 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID SUT
Elevation of weather observation facility 26
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation EDT
Lighting Conditions Dawn
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3300
Sky/Lowest/Cloud Conditions Scattered
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) 26
Dew Point at event time (in degress fahrenheit) 18
Wind Direction (degrees magnetic) 10
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 16
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) 31002
NTSB Notification Source FAA Southern ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Apr 4 2013 1:16PM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1089N
NTSB Number ERA12LA399
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name ROBINSON HELICOPTER COMPANY
Aircraft Model R22 MARINER
Aircraft Series Identifier --
Aircraft Serial Number 1089M
Certified Max Gross Weight 1370
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 1
Cabin Crew Seats --
Passenger Seats 1
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jun 6 2012 12:00AM
Airframe hours since last inspection 6
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WATERCRAFT PHOTO HELICOPTER LLC
Aircraft Owner Street Address 5 STARBOARD CT # 1
Aircraft Owner City BETHANY BEACH
Aircraft Owner State DE
Aircraft Owner Country USA
Aircraft Owner Zipcode 19930-9679
Operator is an individual? No
Operator Name WATERCRAFT PHOTO HELICOPTER LLC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 5 STARBOARD CT # 1
Operator City BETHANY BEACH
Operator State DE
Operator Country USA
Operator Zip code 19930-9679
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 No
Departure Point Same as Event No
Departure Airport Code ILM
Departure City Wilmington
Departure State NC
Departure Country USA
Departure Time 1630
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code MYR
Destination City Myrtle Beach
Destination State SC
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 6 2013 6:34PM
User who most recently changed record johb
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --