Aircraft Accident/Incident Report

Livermore, California 94551
Sunday, May 9, 2010 10:28 PDT

NTSB Narrative Summary Released at Completion of Accident

The flight departed in visual flight rules flight conditions and the non-instrument-rated pilot was returning to her home airport. There was no evidence the pilot obtained a weather briefing prior to departure. An analysis conducted by an NTSB meteorology specialist determined that precipitation passed through the area of the accident site near the time of the accident. A witness that heard the airplane and its subsequent collision with terrain indicated that there was low fog at the time of the accident. Radar data showed that the airplane flew in a straight-line pattern from the northeast to the southwest between its departure and destination and then turned to the southwest when approaching an area of higher terrain. Based on witness information, it is likely that the weather conditions were poor in this area and the pilot was attempting to maneuver the airplane to improved weather conditions at lower elevations on the other side of the higher terrain. Postaccident inspection of the airplane did not disclose evidence of any preimpact anomaly of the engine or airplane systems. The pilot was on a prescription antidepressant medication that would not have been expected to impair her performance. Additionally she also had ingested quinine, which may in some cases contribute to spatial disorientation, although its effect in this accident, if any, could not be determined.

NTSB Probable Cause Narrative

The pilot's continued visual flight into instrument meteorological conditions, which resulted in a collision with obstacles and terrain.

Event Information

Type of Event Accident
Event Date 5/9/2010
Event Day of the Week Sunday
Time of Event 1028
Event Time Zone Pacific Daylight Time
Event City Livermore
Event State CALIFORNIA
Event Country --
Zipcode of the event site 94551
Event Date Year 2010
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 374842N
Event Location Longitude 1214807W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1053 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 190
Weather Observation Facility ID LVK
Elevation of weather observation facility 400
Distance of event from weather observation facility (units?) 8
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 4000
Lowest Non-Ceiling Height 2200
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 14
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.02
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) 28088
NTSB Notification Source FAA Com Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Mar 2 2011 3:24PM
User who most recently changed record stam
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N56626
NTSB Number WPR10FA234
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 PIPER
Aircraft Model PA-28-235
Aircraft Series Identifier --
Aircraft Serial Number 28-7410016
Certified Max Gross Weight 2550
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 Annual
Date of Last Inspection Apr 1 2010 12:00AM
Airframe hours since last inspection 4
Airframe Hours 3172
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type C91
Aircraft Owner Name Oskar Huber
Aircraft Owner Street Address --
Aircraft Owner City BELMONT
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 94002-3743
Operator is an individual? No
Operator Name Julia Huber
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Belmont
Operator State CA
Operator Country USA
Operator Zip code 94002-3743
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 Yes
Departure Point Same as Event No
Departure Airport Code AUN
Departure City Auburn
Departure State CA
Departure Country USA
Departure Time 945
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code SQL
Destination City San Carlos
Destination State CA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 2 2011 3:02PM
User who most recently changed record stam
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --