Half Moon Bay Airport
Aircraft Accident/Incident Report

Half Moon Bay, California 94019
Sunday, June 19, 1994 23:14 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT AND PASSENGER DEPARTED A COASTAL AIRPORT AS THE RETURN PORTION OF A NIGHT CROSS-COUNTRY FLIGHT. THE DEPARTURE ROUTE PLACED THE AIRPLANE OVER AN OCEAN BAY. WEATHER CONDITIONS WERE REPORTED AS AN 800 TO 1,000 FOOT OVERCAST. WITNESSES HEARD THE AIRCRAFT'S ENGINE AND THEN OBSERVED THE AIRPLANE DESCENDING FROM THE BOTTOM OF THE OVERCAST IN A SPIN. THE AIRPLANE STRUCK THE WATER IN A NEAR-VERTICAL NOSE-DOWN ATTITUDE. A SEARCH FOR THE AIRCRAFT ONLY LOCATED FLOATING DEBRIS. SEVERAL SUBSEQUENT SEARCHES HAVE NOT LOCATED THE AIRCRAFT. THE OCCUPANTS INITIALLY WERE NOT RECOVERED. THE PILOT'S BODY WAS RECOVERED 1 MONTH AFTER THE ACCIDENT. THE PASSENGER HAS NOT BEEN LOCATED.

NTSB Probable Cause Narrative

THE PILOT'S LOSS OF AIRCRAFT CONTROL DUE TO SPATIAL DISORIENTATION.

Event Information

Type of Event Accident
Event Date 6/19/1994
Event Day of the Week Sunday
Time of Event 2314
Event Time Zone Pacific Daylight Time
Event City HALF MOON BAY
Event State CALIFORNIA
Event Country --
Zipcode of the event site 94019
Event Date Year 1994
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport HALF MOON BAY
Event Location Nearest Airport ID HAF
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 2
Degrees magnetic from airport 120
Airport Elevation 67
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2300 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 30
Weather Observation Facility ID SFO
Elevation of weather observation facility 11
Distance of event from weather observation facility (units?) 9
Time Zone of the weather observation PDT
Lighting Conditions Night/Dark
Lowest Ceiling Height 1100
Lowest Non-Ceiling Height 800
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 12
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 300
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 1104
NTSB Notification Source --
NTSB Notification Date Jun 20 1994 12:00AM
NTSB Notification Time 110
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:30AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N761GZ
NTSB Number LAX94LA261
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 152
Aircraft Series Identifier 152
Aircraft Serial Number A15220953
Certified Max Gross Weight 1670
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 30 1993 12:00AM
Airframe hours since last inspection 48
Airframe Hours 6868
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name KAROL J. BIALY
Aircraft Owner Street Address 722 LA PRENDA RD.
Aircraft Owner City LOS ALTOS
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 94022
Operator is an individual? --
Operator Name WEST VALLEY FLYING CLUB
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1901 EMBARCADERO SUITE 100
Operator City PALO ALTO
Operator State CA
Operator Country
Operator Zip code 94303
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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
Departure City
Departure State
Departure Country
Departure Time 2312
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code PAO
Destination City PALO ALTO
Destination State CA
Destination Country
Specific Phase of Flight Climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --