Lake Union Airport
Aircraft Accident/Incident Report

Seattle, Washington 98109
Friday, July 8, 1988 17:30 PDT

NTSB Narrative Summary Released at Completion of Accident

ON THE FIRST LEG OF THE SCHEDULED FLOAT PLANE FLIGHT THE PLT HAD LANDED ON LAKE UNION TO EMBARK ADDL PAX. AS THE ACFT DECELERATED 'OFF THE STEP,' A POWER BOAT CONVERGED ON ACFT PATH. PLT MADE RUDDER INPUT TO AVOID COLLISION AND WINGTIP CONTACTED WATER.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/8/1988
Event Day of the Week Friday
Time of Event 1730
Event Time Zone Pacific Daylight Time
Event City SEATTLE
Event State WASHINGTON
Event Country --
Zipcode of the event site 98109
Event Date Year 1988
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport LAKE UNION
Event Location Nearest Airport ID WA57
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 14
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1700 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 155
Weather Observation Facility ID BFI
Elevation of weather observation facility 17
Distance of event from weather observation facility (units?) 7
Time Zone of the weather observation PDT
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) 30
Air Temperature at event time (in degrees celsius) 26
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 320
Variable Wind Indicator Unknown
Wind Speed (knots) 7
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 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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 430
NTSB Notification Source --
NTSB Notification Date Jul 10 1988 12:00AM
NTSB Notification Time 800
Fiche Number and/or location -used to find docket information 36308
Date of most recent change to record Dec 13 2000 11:58AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N67679
NTSB Number SEA88LA133
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name de Havilland
Aircraft Model DHC-2
Aircraft Series Identifier DHC-2
Aircraft Serial Number 1294
Certified Max Gross Weight 5090
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 8
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jun 22 1988 12:00AM
Airframe hours since last inspection 73
Airframe Hours 13472
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name KENMORE AIR HARBOR, INC
Aircraft Owner Street Address 6321 N.E. 175TH
Aircraft Owner City SEATTLE
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 98155
Operator is an individual? --
Operator Name KENMORE AIR HARBOR, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 6321 NE 175TH
Operator City SEATTLE
Operator State WA
Operator Country
Operator Zip code 98155
Operator Code 5K
Owner has at least one certificate Yes - certificate holder
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 Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code S60
Departure City SEATTLE
Departure State WA
Departure Country
Departure Time 1715
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --