North Palm Beach County Airpor Airport
Aircraft Accident/Incident Report

West Palm Beach, Florida 33406
Tuesady, August 28, 2007 16:45 EDT

NTSB Narrative Summary Released at Completion of Accident

According to the Flight Instructor, "the flight was concluding a training flight. The final exercise was a demonstration of an autorotation to a powered recovery. The entry and glide were normal. During the flare the throttle was opened to reinstate the engine power. At this point I was aware that I did not have sufficient power to bring the aircraft to a hover. I leveled the aircraft and prepared for a touch down autorotation. Contact with the ground was level but with some forward movement. The grass runway was soft due to recent rainfall and as a result the front of the skids dug into the runway bringing the aircraft to a sudden stop. The helicopter tipped forward with some force resulting in the mast tipping forward and the blade flexing down. As the blade rotated to the rear of the aircraft it came into contact with the tail boom and severed the tail rotor drive shaft. The aircraft did remain upright and level and I was able to perform a normal shut down. We then exited the aircraft to inspect the damage." The Flight Instructor further stated that "I should have opened the throttle prior to the [flare] in order to give the engine more time to recover before pulling pitch. I was simply late bringing the power back in." The Flight Instructor reported no engine or mechanical malfunction or failures.

NTSB Probable Cause Narrative

The flight Instructor's delayed activation of the throttle during recovery from a demonstartion of an autorotation resulting in touchdown on soft terrain and a nosedown.

Event Information

Type of Event Accident
Event Date 8/28/2007
Event Day of the Week Tuesday
Time of Event 1645
Event Time Zone Eastern Daylight Time
Event City West Palm Beach
Event State FLORIDA
Event Country --
Zipcode of the event site 33406
Event Date Year 2007
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 265027N
Event Location Longitude 0801313W
Event Location Airport North Palm Beach County Airpor
Event Location Nearest Airport ID F45
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 22
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID PBI
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 --
Lowest Non-Ceiling Height 2800
Sky/Lowest/Cloud Conditions Few
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) 31
Dew Point at event time (in degress fahrenheit) 23
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.02
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) 22207
NTSB Notification Source PIC
NTSB Notification Date Aug 28 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 31 2007 7:09AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Ft Lauderdale FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N100RW
NTSB Number ATL07CA122
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 Bell
Aircraft Model 206B
Aircraft Series Identifier --
Aircraft Serial Number 1360
Certified Max Gross Weight 3200
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 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Sep 1 2006 12:00AM
Airframe hours since last inspection 91
Airframe Hours 531
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Klokkenga Helicopter Leasing, Inc
Aircraft Owner Street Address 47600 Blue Heron Dr
Aircraft Owner City Northville
Aircraft Owner State MI
Aircraft Owner Country USA
Aircraft Owner Zipcode 48167
Operator is an individual? No
Operator Name Ocean Helicopters Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City West Palm Beach
Operator State FL
Operator Country USA
Operator Zip code 33412
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
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 Yes
Departure Airport Code F45
Departure City West Palm Beach
Departure State FL
Departure Country USA
Departure Time 1600
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Landing - flare/touchdown
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 11 2007 11:21AM
User who most recently changed record KENJ
Since inspection or accident Time of Accident
Event Location Runway Number and Location 8L
Runway Length 3700
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --