Phoenix Deer Valley Arpt Airport
Aircraft Accident/Incident Report

Phoenix, Arizona 85027
Sunday, March 21, 2010 10:37 MST

NTSB Narrative Summary Released at Completion of Accident

The flight instructor was demonstrating a soft-field takeoff to his student. During the takeoff roll, he applied full back pressure on the yoke, heard the stall horn, and lowered the nose. As the aircraft left the ground, the flight instructor heard the stall horn a second time. The airplane's right wing began to rise as the aircraft reached an estimated altitude of 20 feet above ground level. The flight instructor checked that the throttle was full forward, but the airplane would not accelerate. As the airplane continued to turn left it departed the left side of the runway and the left wing impacted a runway information sign. The airplane came to a stop in the grass off the left side of the runway. The left wing's forward spar was damaged and the left fuel tank was ruptured. The right wing's outer 4 feet (estimated) was bent up and the engine's firewall was wrinkled.

NTSB Probable Cause Narrative

The flight instructor's failure to attain and maintain adequate airspeed while demonstrating a soft-field takeoff.

Event Information

Type of Event Accident
Event Date 3/21/2010
Event Day of the Week Sunday
Time of Event 1037
Event Time Zone Mountain Standard Time
Event City Phoenix
Event State ARIZONA
Event Country --
Zipcode of the event site 85027
Event Date Year 2010
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 334117N
Event Location Longitude 1120517W
Event Location Airport Phoenix Deer Valley Arpt
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 Weather Observation Facility
Time of the weather observation 1053 Mountain Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID DVT
Elevation of weather observation facility 1478
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) 10
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) -9
Wind Direction (degrees magnetic) 80
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) 30.19
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 26840
NTSB Notification Source FAA ROC
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 2010 3:24PM
User who most recently changed record coos
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N428PA
NTSB Number WPR10CA172
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-28-181
Aircraft Series Identifier --
Aircraft Serial Number 2843476
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Mar 11 2010 12:00AM
Airframe hours since last inspection --
Airframe Hours 9350
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name BIRD ACQUISITION LLC
Aircraft Owner Street Address 70 WALNUT ST FL 4
Aircraft Owner City WELLESLEY
Aircraft Owner State MA
Aircraft Owner Country USA
Aircraft Owner Zipcode 02481-2102
Operator is an individual? No
Operator Name BIRD ACQUISITION LLC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 70 WALNUT ST FL 4
Operator City WELLESLEY
Operator State MA
Operator Country USA
Operator Zip code 02481-2102
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code DVT
Departure City Phoenix
Departure State AZ
Departure Country USA
Departure Time 1035
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 Mar 8 2012 9:17AM
User who most recently changed record broda
Since inspection or accident Time of Accident
Event Location Runway Number and Location 07R
Runway Length 8197
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --