Chambers County Airport
Aircraft Accident/Incident Report

Anahuac, Texas 77514
Saturday, November 16, 2013 13:15 CST

NTSB Narrative Summary Released at Completion of Accident

The gyroplane was in the airport traffic pattern when witnesses saw the main rotor head separate in flight and the gyroplane subsequently impact terrain. The pilot’s friends and the mechanic who performed the last conditional inspection reported that the pilot/owner performed most of the maintenance on the gyroplane and that he had recently installed the main rotor head bearing block. Examination of the wreckage revealed that the bearing block had been installed upside down and was being held in place solely by friction. The pilot was not a Federal Aviation Administration-certificated mechanic or repairman.

NTSB Probable Cause Narrative

The incorrect installation by the pilot, who was not a certificated mechanic or repairman, of the main rotor head bearing block, which resulted in the in-flight separation of the rotor head. 

Event Information

Type of Event Accident
Event Date 11/16/2013
Event Day of the Week Saturday
Time of Event 1315
Event Time Zone Central Standard Time
Event City Anahuac
Event State TEXAS
Event Country --
Zipcode of the event site 77514
Event Date Year 2013
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 294534N
Event Location Longitude 0944000W
Event Location Airport Chambers County
Event Location Nearest Airport ID T00
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 190
Airport Elevation 21
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1250 Central Standard Time
Direction of event from weather observation facility (degrees) 245
Weather Observation Facility ID KEFD
Elevation of weather observation facility 32
Distance of event from weather observation facility (units?) 31
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 1400
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 24
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.89
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report KEFD 161850Z 17011KT 7SM BKN014 BKN060 27/24 A2989
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 32916
NTSB Notification Source FAA ASW ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jan 16 2014 4:07PM
User who most recently changed record scoa
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N975DF
NTSB Number CEN14LA056
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name PEARSON JON M
Aircraft Model DRAGONFLY
Aircraft Series Identifier NO SERIES
Aircraft Serial Number 001
Certified Max Gross Weight 637
Aircraft Category Gyrocraft
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Conditional
Date of Last Inspection Aug 17 2013 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name WEIR STEVEN WAYNE
Aircraft Owner Street Address ON FILE
Aircraft Owner City BAYTOWN
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 775238725
Operator is an individual? No
Operator Name WEIR STEVEN WAYNE
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address ON FILE
Operator City BAYTOWN
Operator State TX
Operator Country USA
Operator Zip code 775238725
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code T00
Departure City Anahuac
Departure State TX
Departure Country USA
Departure Time 1300
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code T00
Destination City Anahuac
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 16 2014 4:06PM
User who most recently changed record scoa
Since inspection or accident --
Event Location Runway Number and Location 30
Runway Length 3005
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --