Lake Whatcom Airport
Aircraft Accident/Incident Report

Bellingham, Washington 98227
Thursday, July 12, 1990 18:15 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT AND HIS PASSENGER WERE DOING A SERIES OF LANDINGS ON LAKE WHATCOM. DURING THE SECOND TAKEOFF RUN, THE LAKE AMPHIBIAN STRUCK AND UNSEEN OBJECT, TEARING A HOLE IN THE HULL. THE AIRCRAFT SANK A FEW MINNUTES AFTER THE OCCUPANTS ESCAPED.

NTSB Probable Cause Narrative

COLLISION WITH A SUBMERGED OBJECT.

Event Information

Type of Event Accident
Event Date 7/12/1990
Event Day of the Week Thursday
Time of Event 1815
Event Time Zone Pacific Daylight Time
Event City BELLINGHAM
Event State WASHINGTON
Event Country --
Zipcode of the event site 98227
Event Date Year 1990
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport LAKE WHATCOM
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 307
Weather Briefing Completeness Not pertinent
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) 50
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 0
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Unknown
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 None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 486
NTSB Notification Source --
NTSB Notification Date Jul 12 1990 12:00AM
NTSB Notification Time 1845
Fiche Number and/or location -used to find docket information 41420
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 N6686L
NTSB Number SEA90LA132
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name LAKE
Aircraft Model LA-4-200
Aircraft Series Identifier LA-4-200
Aircraft Serial Number 449
Certified Max Gross Weight 2600
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WHIDBEY ISLAND NAVY FLYING CL
Aircraft Owner Street Address BOX 37
Aircraft Owner City OAK HARBOR
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 98277
Operator is an individual? --
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 06
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 No
Departure Airport Code NUW
Departure City WHIDBEY NAS
Departure State WA
Departure Country
Departure Time 1745
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City LAKE WHATCOM
Destination State WA
Destination Country
Specific Phase of Flight Takeoff
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 --