Hobby Field Airport
Aircraft Accident/Incident Report

Creswell, Oregon 97426
Saturday, May 14, 2005 14:45 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that approximately 15 minutes after takeoff, while in straight and level flight at 4,000 feet MSL, the engine began to run rough and eventually lost power. After experiencing the loss of engine power, the pilot initiated a landing to a nearby open field. During the landing roll out, the airplane encountered tall grass and nosed over resulting in substantial damage. The pilot reported that post accident examination of the airplane's engine revealed that the brass carburetor float travel (total drop travel) was approximately 3/16 of an inch, 5/16 of an inch less than specified for normal operations. The carburetor float level is a means of regulating the amount of total fuel delivered to the engine via the metering jet.

NTSB Probable Cause Narrative

Loss of engine power as a result of a carburetor float drop restriction during cruise flight. Tall grass in the landing area was a factor in the accident.

Event Information

Type of Event Accident
Event Date 5/14/2005
Event Day of the Week Saturday
Time of Event 1445
Event Time Zone Pacific Daylight Time
Event City Creswell
Event State OREGON
Event Country --
Zipcode of the event site 97426
Event Date Year 2005
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 435559N
Event Location Longitude 1230307W
Event Location Airport HOBBY FIELD
Event Location Nearest Airport ID 77S
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 538
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1454 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 343
Weather Observation Facility ID KEUG
Elevation of weather observation facility 538
Distance of event from weather observation facility (units?) 9
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3000
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) 14
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.97
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 19423
NTSB Notification Source FAA ROC
NTSB Notification Date May 14 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 28 2006 1:55PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Portland, Oregon

Aircraft Involved

Aircraft #1

Aircraft Registration Number N81PU
NTSB Number SEA05LA099
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 Horvath
Aircraft Model Pitts S-1C
Aircraft Series Identifier --
Aircraft Serial Number 01
Certified Max Gross Weight 1100
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
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 Apr 1 2005 12:00AM
Airframe hours since last inspection 5
Airframe Hours 6
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Anthony P. Horvath
Aircraft Owner Street Address --
Aircraft Owner City Creswell
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97426
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 77S
Departure City CRESWELL
Departure State OR
Departure Country USA
Departure Time 1430
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Cruise - normal
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 12 2006 2:46PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 33
Runway Length 3101
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --