Aircraft Accident/Incident Report

Glenoma, Washington 98356
Monday, June 21, 2004 12:50 PDT

NTSB Narrative Summary Released at Completion of Accident

Just prior to the accident, the aircraft was observed flying very low and slow through the hilly terrain just east of the east end of Riffe Lake. The airplane then made a steeply banked turn, reversed course, disappeared behind a line of trees, and then impacted a number of trees along the slope of a steep incline. A post-accident inspection of the aircraft and its engine did not reveal any evidence that there had been any malfunction or anomaly in the flight control system or in the operation of the engine. It was further determined that the aircraft had taken on 8.25 gallons of aviation fuel approximately 70 minutes prior to the accident.

NTSB Probable Cause Narrative

The pilot's failure to maintain clearance from the trees while maneuvering at a very low level in hilly terrain. Factors include hilly terrain, and thickly forested slopes in the area where the pilot was maneuvering.

Event Information

Type of Event Accident
Event Date 6/21/2004
Event Day of the Week Monday
Time of Event 1250
Event Time Zone Pacific Daylight Time
Event City Glenoma
Event State WASHINGTON
Event Country --
Zipcode of the event site 98356
Event Date Year 2004
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 462900N
Event Location Longitude 1221000W
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Witness
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 17229
NTSB Notification Source FAA Operations Center
NTSB Notification Date Jun 21 2004 12:00AM
NTSB Notification Time 1330
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jan 27 2005 3:52PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Seattle FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N27135
NTSB Number SEA04LA113
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model J-3
Aircraft Series Identifier --
Aircraft Serial Number 4377
Certified Max Gross Weight 1200
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 1
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 Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name William E. Walrath
Aircraft Owner Street Address --
Aircraft Owner City Puyallup
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 98374
Operator is an individual? No
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 --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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 CLS
Departure City Chehalis
Departure State WA
Departure Country USA
Departure Time 1155
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code 1S0
Destination City Puyallup
Destination State WA
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --