Caldwell Industrial Airport
Aircraft Accident/Incident Report

Caldwell, Idaho 83607
Saturday, August 1, 2009 13:50 MDT

NTSB Narrative Summary Released at Completion of Accident

According to a family member of the pilot, the airplane had sat on the airport's ramp for about a year without having been flown. About a week before the accident, the pilot flew the airplane once around the traffic pattern. On the day of the accident, the pilot had removed and sandblasted the spark plugs, checked the cylinders for compression, and removed and cleaned the air filter; the filter was reported to have had "some goop" on it. A witness reported observing the airplane take off, and, as it went by him at 100 to 200 feet above ground level, he heard a "popping noise." He subsequently observed the airplane make a quick left turn to a left downwind leg, and as the airplane continued on the downwind he observed the nose increase in pitch, but it was not climbing. As the airplane came abeam the numbers, it made a steep left turn, followed by the nose dropping before it dove into the ground and erupted in flames. The airplane was consumed by a post impact fire. A post accident examination of the engine revealed no anomalies with the cylinders and valve train. All spark plugs were found to have excessive gaps, and all but one failed a bench check when exposed to pressure greater than 80 psi. A post accident examination of the airframe revealed no anomalies. No aircraft or engine logbooks were located during the investigation.

NTSB Probable Cause Narrative

The pilot's failure to maintain adequate airspeed that led to a stall/spin while maneuvering in the traffic pattern.

Event Information

Type of Event Accident
Event Date 8/1/2009
Event Day of the Week Saturday
Time of Event 1350
Event Time Zone Mountain Daylight Time
Event City Caldwell
Event State IDAHO
Event Country --
Zipcode of the event site 83607
Event Date Year 2009
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 433853N
Event Location Longitude 1163826W
Event Location Airport Caldwell Industrial Airport
Event Location Nearest Airport ID EUL
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 2432
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1335 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 120
Weather Observation Facility ID EUL
Elevation of weather observation facility 2432
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation MDT
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) 5
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 190
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) 30.05
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 26405
NTSB Notification Source Regional Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Feb 23 2010 12:07PM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N69KG
NTSB Number WPR09LA378
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Gray
Aircraft Model RV-6
Aircraft Series Identifier --
Aircraft Serial Number 23069
Certified Max Gross Weight 1650
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 Unknown
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 Unknown
Aircraft Owner Name Justin C. Walker
Aircraft Owner Street Address --
Aircraft Owner City Nampa
Aircraft Owner State ID
Aircraft Owner Country USA
Aircraft Owner Zipcode 83651
Operator is an individual? No
Operator Name Justin C. Walker
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Nampa
Operator State ID
Operator Country USA
Operator Zip code 83651
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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 Yes
Departure Airport Code EUL
Departure City Caldwell
Departure State ID
Departure Country USA
Departure Time 1350
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code EUL
Destination City Caldwell
Destination State ID
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 9 2009 3:31PM
User who most recently changed record stam
Since inspection or accident --
Event Location Runway Number and Location 12
Runway Length 5500
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --