Aircraft Accident/Incident Report

Theriot, Louisiana 70397
Saturday, July 3, 1999 12:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The engine of the helicopter lost power during a repositioning flight at 500 feet above ground level. The pilot initiated a straight-in autorotation to a swampy area covered with grass 4 to 5 feet tall. The helicopter settled into the grass, rolled over on its right side and came to rest heading 180 degrees from the direction of the landing. The aircraft was recovered to the helicopter manufacturer's facility for evaluation and repairs. On August 17, 1999, the engine of the helicopter was successfully run for 20 minutes under the supervision of an FAA inspector. The inspector reported that the engine performed within the established parameters. He added that water was drained from the main fuel tank, the gascolator, and the carburetor bowl.

NTSB Probable Cause Narrative

The pilot's inadequate preflight inspection which led to a contaminated fuel supply and subsequent loss of engine power. A factor was the lack of suitable terrain available for the forced landing.

Event Information

Type of Event Accident
Event Date 7/3/1999
Event Day of the Week Saturday
Time of Event 1200
Event Time Zone Central Daylight Time
Event City THERIOT
Event State LOUISIANA
Event Country --
Zipcode of the event site 70397
Event Date Year 1999
Event Date Month 7
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 Unknown
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 Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 8000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 10
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 434
NTSB Notification Source --
NTSB Notification Date Jul 4 1999 12:00AM
NTSB Notification Time 1230
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 12 2000 11:44AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8360T
NTSB Number FTW99LA179
Missing Aircraft Indicator N
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 Robinson
Aircraft Model R22 BETA
Aircraft Series Identifier R22 BETA
Aircraft Serial Number 2758
Certified Max Gross Weight 1370
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Feb 5 1999 12:00AM
Airframe hours since last inspection 67
Airframe Hours 557
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROBERT J. NEIDER
Aircraft Owner Street Address 45 EMILE AVENUE
Aircraft Owner City KENNER
Aircraft Owner State LA
Aircraft Owner Country
Aircraft Owner Zipcode 70065
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 None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Business
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1150
Departure Time Zone CDT
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 Cruise
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 --