University Of Oklahoma Westhei Airport
Aircraft Accident/Incident Report

Norman, Oklahoma 73072
Saturday, December 2, 2006 8:45 CST

NTSB Narrative Summary Released at Completion of Accident

The 325-hour private pilot lost control of the single-engine homebuilt airplane while initiating the approach and landing phase of the flight. The accident airplane was selected to be the last to land in trail as a flight of three. The tower operator cleared the flight of 3 airplanes to land on Runway 03. The tower operator reported that as he watched the first airplane land, he noticed the sun reflect off the third airplane and observed it go below a tree line. Numerous witnesses observed the accident airplane approach the airfield. Several witnesses reported that the airplane was low or very low, and as it approached the airfield. The witnesses observed the accident airplane made a sharp bank, just before impacting the ground. Furthermore, one of the witnesses stated that the airplane was "struggling, tipping left-and-right, and he thought it was going to tip over" before entering a sudden 90-degree turn and assuming a pronounced nose-low attitude. The pilots of the other two airplanes in the flight, stated that prior to the flight they had agreed to slow their airplanes to 70 mph, and then to 65 mph in order to maintain proper spacing between the airplanes during their approach to land. Flight control continuity was established and the flaps were confirmed to be in the fully extended position. An examination of the airplane and engine did not reveal any anomalies that prevented normal operation.

NTSB Probable Cause Narrative

The pilot's failure to maintain airspeed which resulted in an inadvertent stall. A contributing factor was the pilot's attempt at formation flying.

Event Information

Type of Event Accident
Event Date 12/2/2006
Event Day of the Week Saturday
Time of Event 845
Event Time Zone Central Standard Time
Event City Norman
Event State OKLAHOMA
Event Country --
Zipcode of the event site 73072
Event Date Year 2006
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport UNIVERSITY OF OKLAHOMA WESTHEI
Event Location Nearest Airport ID OUN
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 2
Degrees magnetic from airport --
Airport Elevation 1182
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 OUN
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 --
Sky/Lowest/Cloud Conditions Clear
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) -2
Dew Point at event time (in degress fahrenheit) -3
Wind Direction (degrees magnetic) 70
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.4
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 21612
NTSB Notification Source FAA Comm Center
NTSB Notification Date Dec 2 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 27 2007 1:15PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Oklahoma City

Aircraft Involved

Aircraft #1

Aircraft Registration Number N216RV
NTSB Number DFW07LA032
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 Noble
Aircraft Model Vans RV-7A
Aircraft Series Identifier --
Aircraft Serial Number 70256
Certified Max Gross Weight 1600
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
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 Conditional
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Robert Noble
Aircraft Owner Street Address 14917 SE 79th St
Aircraft Owner City Choctaw
Aircraft Owner State OK
Aircraft Owner Country USA
Aircraft Owner Zipcode 73020
Operator is an individual? Yes
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? --
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 2OK2
Departure City MIDWEST CITY
Departure State OK
Departure Country USA
Departure Time 835
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code OUN
Destination City NORMAN
Destination State OK
Destination Country USA
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 17 2007 9:41AM
User who most recently changed record CASH
Since inspection or accident --
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --