Van Nuys Airport
Aircraft Accident/Incident Report

Sherman Oaks, California 91423
Saturday, May 24, 2003 12:25 PDT

NTSB Narrative Summary Released at Completion of Accident

On a standard instrument departure procedure, the airplane came out of the clouds in a steep, nose down, inverted attitude and collided with terrain. The weather at the departure airport was 1,700-foot overcast with the tops ranging from about 4,000 to 4,500 feet. The mode C altitude reporting system on board the airplane initially was reporting 1,400 msl, but the pilot reported climbing out of 2,300 msl. Air traffic control made numerous queries about the altitude anomalies and repeatedly asked the pilot to recycle the transponder. In this aircraft, the transponder control head was mounted on the lower right side avionics rail abeam the pilot's seat back. The pilot would have to look down, to the right, and aft to alter any settings on the transponder during flight. The airplane was climbing on a southeasterly course. After a minute ATC issued a left turn to 040 degrees. The pilot acknowledged the course change, but the recorded radar track continued in a southeasterly direction until its last recorded point. Twenty-three seconds after the pilot acknowledged the course change and reported leaving 3,000 feet, he asked ATC if it was a left or right turn to 040. ATC instructed the pilot to turn off the transponder's mode C function. There were no further recorded transmissions from the pilot. The last recorded mode C data occurred 17 seconds after the pilot's last transmission. The mode C altitude reports from the airplane varied from 1,300 feet to a high of 4,100 feet, and erratically fluctuated between those values. The airplane came out of the clouds in a steep, nose down, inverted position, and heading in a northeasterly direction. The wreckage was located north of the last recorded radar position.

NTSB Probable Cause Narrative

The pilot's in-flight loss of control due to spatial disorientation. Factors in the accident were the distraction caused by the malfunctioning mode C altitude reporting system, and the location of the transponder control head, which necessitated repeated pilot head movements to the right and down while in instrument meteorological conditions.

Event Information

Type of Event Accident
Event Date 5/24/2003
Event Day of the Week Saturday
Time of Event 1225
Event Time Zone Pacific Daylight Time
Event City Sherman Oaks
Event State CALIFORNIA
Event Country --
Zipcode of the event site 91423
Event Date Year 2003
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 340830N
Event Location Longitude 1182557W
Event Location Airport VAN NUYS
Event Location Nearest Airport ID VNY
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 5.5
Degrees magnetic from airport 133
Airport Elevation 799
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1224 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 313
Weather Observation Facility ID VNY
Elevation of weather observation facility 799
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 1700
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.94
Density Altitude (feet) 1207
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) 16109
NTSB Notification Source FAA
NTSB Notification Date May 24 2003 12:00AM
NTSB Notification Time 1254
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 1 2004 7:08AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP- FSDO- VAN NUYS

Aircraft Involved

Aircraft #1

Aircraft Registration Number N537Z
NTSB Number LAX03FA162
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name North American
Aircraft Model T28C
Aircraft Series Identifier --
Aircraft Serial Number 140537
Certified Max Gross Weight 9000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
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 Retractable
Aircraft, Type of Last Inspection Conditional
Date of Last Inspection Mar 14 2003 12:00AM
Airframe hours since last inspection --
Airframe Hours 8675.7
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name STEVE J. MASKET
Aircraft Owner Street Address --
Aircraft Owner City Los Angeles
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 90046
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 VNY
Departure City Van Nuys
Departure State CA
Departure Country USA
Departure Time 1222
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code TRM
Destination City Thermal
Destination State CA
Destination Country USA
Specific Phase of Flight Climb - to cruise
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jun 29 2004 6:01PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --