Deer Valley Airport
Aircraft Accident/Incident Report

Phoenix, Arizona 85260
Friday, January 9, 2009 13:43 MST

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that during rollout from a practice landing on runway 25L in his amateur-built, experimental biplane, he may have applied unequal toe brake pressure. The pilot stated that he lost directional control of the airplane, and while decelerating it swerved about 60 degrees sideways from the runway's centerline. During the mishap, the right main landing gear collapsed under the fuselage and the lower right wing impacted the runway. The pilot reported no mechanical failures with the airplane at the time of the accident. At the time, the surface wind was light and variable. A Federal Aviation Administration inspector examined the airplane and reported that the outboard portion of the lower right wing's aft spar was cracked.

NTSB Probable Cause Narrative

The pilot's failure to maintain directional control during landing. Contributing to the accident was the pilot's improper application of brakes.

Event Information

Type of Event Accident
Event Date 1/9/2009
Event Day of the Week Friday
Time of Event 1343
Event Time Zone Mountain Standard Time
Event City Phoenix
Event State ARIZONA
Event Country --
Zipcode of the event site 85260
Event Date Year 2009
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 334118n
Event Location Longitude 1120457w
Event Location Airport Deer Valley
Event Location Nearest Airport ID DVT
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 1478
Weather Briefing Completeness --
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation MST
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) 25
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 25031
NTSB Notification Source WP 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 Apr 14 2009 5:10PM
User who most recently changed record grol
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N60DE
NTSB Number WPR09CA081
Missing Aircraft Indicator --
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 PARKER
Aircraft Model 77
Aircraft Series Identifier --
Aircraft Serial Number 1919
Certified Max Gross Weight 1200
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats 1
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 Jun 19 2008 12:00AM
Airframe hours since last inspection 5
Airframe Hours 272
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name PETERSON TERRY E
Aircraft Owner Street Address --
Aircraft Owner City SCOTTSDALE
Aircraft Owner State AZ
Aircraft Owner Country USA
Aircraft Owner Zipcode 85255-7719
Operator is an individual? Yes
Operator Name PETERSON TERRY E
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City SCOTTSDALE
Operator State AZ
Operator Country USA
Operator Zip code 85255-7719
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 DVT
Departure City Phoenix
Departure State AZ
Departure Country USA
Departure Time 1330
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code DVT
Destination City Phoenix
Destination State AZ
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 27 2009 9:46AM
User who most recently changed record johb
Since inspection or accident Last Inspection
Event Location Runway Number and Location 25L
Runway Length 8197
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --