Aircraft Accident/Incident Report

Long Beach, California 90806
Saturday, June 16, 1990 13:30 PDT

NTSB Narrative Summary Released at Completion of Accident

DURING THE 18-MONTH PERIOD PRIOR TO THIS FLIGHT THE ACFT HAD BEEN REBUILT. THIS WAS THE FIRST FLIGHT TO LEAK-CHECK THE HULL BEFORE PAINTING. SEVERAL WATER LANDINGS WERE MADE; THE LAST BEING REFERRED TO BY A WITNESS 'IT HIT THE WATER'. THE PILOT STATED THAT WHILE RETURNING TO LONG BEACH ALL ELEVATOR CONTROL WAS LOST. HE ELECTED TO LAND BACK IN THE WATER, AND FORGOT THE WHEELS WERE DOWN. THE LANDING WAS MADE USING POWER AND ELEV TRIM, AND THE ACFT NOSED OVER NEAR THE SHORELINE. INVESTIGATION REVEALED A DISCOLORED & CORRODED ELEV CONTROL CABLE TURNBUCKLE THAT HAD FAILED DUE TO STRESS CORROSION CRACKING, WITH THE FINAL FAILURE MODE OF TENSILE OVERLOAD. THE PILOT STATED THAT HE HAD NOT MADE A WATER LANDING IN OVER ONE YEAR. ABOUT 2-1/2 HRS AFTER THE OCCURRENCE THE PILOT'S BLOOD ALCOHOL LEVEL WAS 0.022%.

NTSB Probable Cause Narrative

THE PILOT'S FAILURE TO RETRACT THE LANDING GEAR RESULTING IN AN INADVERTENT WHEELS-DOWN LANDING IN WATER. IN ADDITION, A LOSS OF ELEVATOR CONTROL WAS ENCOUNTERED DUE TO A STRESS CORROSION FAILURE OF AN ELEVATOR CONTROL CABLE TURNBUCKLE AS A RESULT OF INADEQUATE MAINTENANCE AND INSPECTION. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: A PREVIOUS HARD LANDING AS A RESULT OF AN IMPROPER LEVEL-OFF, AND THE PILOT'S LACK OF RECENT EXPERIENCE IN THE MAKE AND MODEL AIRPLANE.

Event Information

Type of Event Accident
Event Date 6/16/1990
Event Day of the Week Saturday
Time of Event 1330
Event Time Zone Pacific Daylight Time
Event City LONG BEACH
Event State CALIFORNIA
Event Country --
Zipcode of the event site 90806
Event Date Year 1990
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious 1
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1632
NTSB Notification Source --
NTSB Notification Date Jun 16 1990 12:00AM
NTSB Notification Time 1350
Fiche Number and/or location -used to find docket information 42899
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N86640
NTSB Number LAX90LA221
Missing Aircraft Indicator N
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 GRUMMAN
Aircraft Model G21A
Aircraft Series Identifier G21A
Aircraft Serial Number 1160
Certified Max Gross Weight 8000
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 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name RICHARD PROBERT
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 146 QUINCY
Operator City LONG BEACH
Operator State CA
Operator Country
Operator Zip code 90806
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) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1328
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --