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NTSB Report

June 20, 1994 · Cessna 152 · N761GZ

Half Moon Bay, CA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 20, 1994
Injury Outcomes
2 injuries (2 fatalities)
Location
Half Moon Bay, CA
Aircraft
Cessna 152
Tail Number
N761GZ
Operator
West Valley Flying Club
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX94LA261

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

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

Full Narrative

On June 19, 1994, about 2314 hours Pacific daylight time, a Cessna 152, N761GZ, crashed into the ocean after takeoff from the Half Moon Bay Airport, Half Moon Bay, California. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight to Palo Alto, California, when the accident occurred. The airplane, registered to the pilot and operated by the West Valley Flying Club, Palo Alto, was destroyed. The certificated private pilot received fatal injuries. A passenger on board was not recovered and is presumed to have received fatal injuries. Visual meteorological conditions prevailed. A Federal Aviation Administration (FAA) operations inspector, Oakland Flight Standards District Office, reported that following departure, witnesses reported hearing an engine sound increase and observed the airplane descend out of overcast cloud conditions about 800 to 1,000 feet above the ground. Several witnesses reported that the airplane was spinning. The airplane collided with the water in a steep, nose-down attitude. Personnel from the U.S. Coast Guard conducted a search operation for any survivors, with negative results. The search was centered on floating debris about 2 miles south of the airport and about 1 mile from the shoreline. Search personnel from the San Mateo County Sheriff's Office, Redwood City, California, conducted several search operations utilizing divers and side-scanning sonar. The aircraft was not located. The pilot held a private pilot certificate with an airplane single-engine land rating. The most recent third-class medical certificate was issued to the pilot on October 13, 1992, and contained the limitation that the pilot must have available correcting glasses for near vision. The pilot's personal flight logbook was not recovered. According to the pilot/operator report submitted by the operator, the pilot's total aeronautical experience consists of about 1,000 hours, of which 800 were accrued in the accident aircraft make and model. In the 90 days preceding the accident, the pilot had accrued about 4.8 hours in the accident aircraft. The flight log sheets maintained by the operator were carried in the airplane and were not recovered. According to the airplane's logbooks, the last entry in the maintenance logs was April 22, 1994, when an oil change and minor airframe maintenance was performed. At that time, the airplane had accumulated a total time in service of 6,868 flight hours. The most recent annual inspection of the airframe and engine was accomplished on December 30, 1993, 48 flight hours before the last inspection. At the time of the last inspection, the engine had accrued a total time in service of 6,000 hours of operation. The maintenance records note that a major overhaul was accomplished on April 26, 1993, 250 hours of operation before the accident. The operator's records indicated that the accident aircraft was fueled on June 14, 1994, with 15.1 gallons of fuel. It is unknown if the airplane had been refueled by the pilot since that date. The closest official weather observation station is San Francisco International Airport, San Francisco, California, which is located 9 nautical miles northeast of the accident site. At 2300 hours, a surface observation was reporting in part: Sky condition and ceiling, 800 feet scattered clouds, measured ceiling, 1,100 feet broken, 25,000 feet broken; visibility, 12 miles; temperature, 55 degrees F; dew point, 51 degrees F; wind, 300 degrees at 10 knots; altimeter, 30.01 inHg. The Half Moon Bay airport has a published elevation of 67 feet mean sea level. The airport is equipped a single hard-surfaced runway on a 120/300 degree magnetic orientation. Runway 12 is 5,000 feet long by 150 feet wide. The departure path from runway 12 places aircraft over the Pillar Point Harbor of Half Moon Bay. The San Mateo County Sheriff's Office conducted a missing persons investigation to establish the airplane occupants' identities. Their investigation revealed that the pilot and passenger had flown to Half Moon Bay for dinner and were to return to Palo Alto on the accident date. On July 22, 1994, the pilot was recovered from the ocean beach area of Half Moon Bay, west of Miranda Avenue. A post mortem examination of the pilot was conducted by the San Mateo County Coroner's Office, 401 Marshall, Redwood City, California, on July 23, 1994. The passenger has not been recovered.

Flight

Event TypeAccident
Event Time23:14 PDT
Nearest AirportHalf Moon Bay (2nm ESE)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 152
Tail NumberN761GZ
Aircraft CategoryAir
DamageDestroyed
OperatorWest Valley Flying Club
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-L2C · Reciprocating · 110
Seats2

People & Injuries

Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 60 · Third Class

Conditions

ConditionsVMC
LightDark Night
Wind300° @ 10 kt
Visibility12 sm
CeilingBroken clouds 1100 ft
Temperature / Dew Point55 / 52
Altimeter30.00 inHg
Observation Time06:00
Weather SourceWFAC

Appendix: Source Data