Aircraft Accident/Incident Report

Seattle, Washington 98133
Sunday, September 7, 1986 15:46 PDT

NTSB Narrative Summary Released at Completion of Accident

THE ACFT PLT AND GND CREW WERE CONDUCTING GND HANDLING AND MOORING PROCEDURES. THE PLAN WAS TO ASCEND ABOUT 10 FT AGL OVER THE FLD. THE FLD WAS IN A DEPRESSION SURROUNDED BY TALL TREES AND SE OF A 400 FT AGL RADIO TWR. DURING LIFT OFF THE GND CREW HELD THE ACFT DOWN WHILE THE PLT HEATED THE BAG. THE 'BURNS' AND 'HOLD DOWN' WAS LONGER THAN ANTICIPATED AND AT LAUNCH THE ACFT ROSE HIGHER THAN PLANNED. THE ALT WAS SUCH THAT THE ACFT ROSE ABOVE THE TREES AND STARTED BEING AFFECTED BY THE 5-7 KT WIND FROM THE SSE. THE PLT MANEUVERED THE ACFT N OF THE FLD AND NNW OF THE TWR. AFTER ASSURING THE ACFT WAS CONTROLLABLE WITH THE ENG AND BURNERS AN APCH WAS INITIATED BACK TO THE FLD. DURING THE APCH THE DESCENT WAS NOT AS ANTICIPATED AND THE ENG WAS SET TO IDLE. DURING THIS TIME THE WIND SHIFTED, PLACING THE ACFT UPWIND OF THE TWR. THE APCH WAS ABANDONED IN FAVOR OF MANEUVERING AWAY FROM THE TWR. THE ENG FAILED TO RESPOND AND A CLIMB OVER THE TWR WAS INITIATED. THE ACFTS NOSE GND LINE CAUGHT IN THE TWR.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Incident
Event Date 9/7/1986
Event Day of the Week Sunday
Time of Event 1546
Event Time Zone Pacific Daylight Time
Event City SEATTLE
Event State WASHINGTON
Event Country --
Zipcode of the event site 98133
Event Date Year 1986
Event Date Month 9
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 Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1448 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 180
Weather Observation Facility ID BFT
Elevation of weather observation facility 26
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 20000
Lowest Non-Ceiling Height 3500
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) 15
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 230
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) 29
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5050
NTSB Notification Source --
NTSB Notification Date Sep 7 1986 12:00AM
NTSB Notification Time 1700
Fiche Number and/or location -used to find docket information 32798
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number GBMCT
NTSB Number SEA86IA240
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CAMERON
Aircraft Model D-50
Aircraft Series Identifier D-50
Aircraft Serial Number 1024
Certified Max Gross Weight 1000
Aircraft Category Blimp
Aircraft Registration Class Foreign Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 9 1986 12:00AM
Airframe hours since last inspection 6
Airframe Hours 6
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name CAMERON BALLOON, LTD.
Aircraft Owner Street Address BEDMISTER
Aircraft Owner City BRISTOL ENGLAND
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name ROBERT L. POWERS
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 19303 FREMONT AVENUE N.
Operator City SEATTLE
Operator State WA
Operator Country
Operator Zip code 98133
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 1529
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 Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
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 --