Deer Park Airport
Aircraft Accident/Incident Report

Deer Park, Washington 99006
Sunday, May 24, 1992 17:30 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT INADVERTENTLY ACTIVATED THE SPOILERS AT 400 FEET AGL WHILE ATTEMPTING TO RELEASE THE TOW ROPE DURING AN AUTO-TOW LAUNCH TAKEOFF ON A 6100 FT LONG RUNWAY. THE ACFT LOST ALTITUDE, AIRSPEED AND STALLED. THE ACFT IMPACTED IRRIGATION EQUIP WHEN THE PILOT MADE A LANDING IN A OPEN FIELD BESIDE THE RUNWAY.

NTSB Probable Cause Narrative

THE INADVERTENT ACTIVATION OF FLIGHT SPOILERS BY THE PILOT AND HIS FAILURE TO MAINTAIN AIRSPEED, RESULTING IN LOSS OF CONTROL DURING TAKEOFF. A FACTOR RELATING TO THE ACCIDENT WAS THE PRESENCE OF AN IRRIGATION SPRINKLER THAT WAS IMPACTED BY THE AIRCRAFT DURING LANDING GROUND ROLL.

Event Information

Type of Event Accident
Event Date 5/24/1992
Event Day of the Week Sunday
Time of Event 1730
Event Time Zone Pacific Daylight Time
Event City DEER PARK
Event State WASHINGTON
Event Country --
Zipcode of the event site 99006
Event Date Year 1992
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport DEER PARK
Event Location Nearest Airport ID 0S7
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 2207
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1649 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 145
Weather Observation Facility ID SFF
Elevation of weather observation facility 1953
Distance of event from weather observation facility (units?) 17
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) 31
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 90
Variable Wind Indicator Unknown
Wind Speed (knots) 6
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 4750
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) 2500
NTSB Notification Source --
NTSB Notification Date Jun 5 1992 12:00AM
NTSB Notification Time 1210
Fiche Number and/or location -used to find docket information 46557
Date of most recent change to record Dec 11 2000 2:56PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N28CL
NTSB Number SEA92LA118
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 I.C.A. Brasov
Aircraft Model IS-28B2
Aircraft Series Identifier IS-28B2
Aircraft Serial Number 27
Certified Max Gross Weight 1301
Aircraft Category Glider
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 0
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 5 1992 12:00AM
Airframe hours since last inspection 26
Airframe Hours 863
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name SPOKANE SOARING SOCIETY
Aircraft Owner Street Address EAST 14715 20TH
Aircraft Owner City VERADALE
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 99037
Operator is an individual? --
Operator Name SPOKANE SOARING SOCIETY
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address EAST 14715 20TH
Operator City VERADALE
Operator State WA
Operator Country
Operator Zip code 99037
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 No
Departure Airport Code 07S
Departure City DEER PARK
Departure State WA
Departure Country
Departure Time 1730
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 07S
Destination City
Destination State
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 22
Runway Length 6100
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --