Aircraft Accident/Incident Report

Oak Grove, Louisiana 71263
Saturday, August 19, 1989 7:35 CDT

NTSB Narrative Summary Released at Completion of Accident

DURING CRUISE FLIGHT, AT APPROXIMATELY 500 FEET AGL, THE PILOT DETECTED A HIGH PITCHED NOISE, A LOW MAIN ROTOR RPM INDICATION, AND INITIATED AN AUTOROTATION. THE PILOT REPORTED THAT N2 RPM HAD REMAINED AT 100% THROUGHOUT THE MANEUVER. THE COLLECTIVE APPLICATION WAS REPORTED TO BE FULL UP AT APPROXIMATELY 50 FEET AGL. A HARD LANDING, IN A SKID, RESULTED IN A ROLL OVER. NO PREIMPACT MECHANICAL MALFUNCTIONS OR FAILURES WERE DISCOVERED.

NTSB Probable Cause Narrative

PILOT'S IMPROPER EMERGENCY PROCEDURES AND FLARE THAT LED TO A HARD LANDING AND ROLL OVER. FACTORS IN THE ACCIDENT WERE THE PILOT'S DECISION TO INITIATE AN AUTOROTATION FOLLOWING AN UNDETERMINED EVENT AND FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING SEQUENCE.

Event Information

Type of Event Accident
Event Date 8/19/1989
Event Day of the Week Saturday
Time of Event 735
Event Time Zone Central Daylight Time
Event City OAK GROVE
Event State LOUISIANA
Event Country --
Zipcode of the event site 71263
Event Date Year 1989
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID NONE
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Dawn
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2048
NTSB Notification Source --
NTSB Notification Date Aug 19 1989 12:00AM
NTSB Notification Time 1040
Fiche Number and/or location -used to find docket information 41281
Date of most recent change to record Dec 13 2000 12:58PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5006N
NTSB Number FTW89LA150
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 206B
Aircraft Series Identifier 206B
Aircraft Serial Number 2492
Certified Max Gross Weight 3200
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
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 100 Hour
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name HOUSTON HELICOPTERS
Aircraft Owner Street Address 3506 LOCKHEED P.O. BOX 830
Aircraft Owner City PEARLAND
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 77581
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger/Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code NONE
Departure City CAMERON
Departure State LA
Departure Country
Departure Time 721
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code NONE
Destination City VERMILLION 69
Destination State GM
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --