Munday Municipal Airport
Aircraft Accident/Incident Report

Munday, Texas 76371
Thursday, May 8, 1997 13:10 CDT

NTSB Narrative Summary Released at Completion of Accident

During the initial takeoff climb, the agricultural airplane's engine lost power, and the pilot executed a forced landing in a plowed field. The airplane nosed down in the soft ground. Examination of the airplane by the operator revealed that the right wing fuel tank was empty, and the left tank contained approximately 80 gallons of fuel. Both fuel lines leading from the left wing tank to the fuselage header tank were blocked by pellets of what appeared to be silicone rubber. Chemical analysis confirmed that the pellets were composed of silicone rubber. The 1995 model airplane had accumulated 612 hours total time. The operator expressed the opinion that the silicone rubber might have been applied to the gaskets of the wing fuel tank access panels during manufacture of the airplane; however, a representative of the manufacturer stated that the company did not use silicone rubber to seal fuel tanks. An inspection of the manufacturer's production line by FAA personnel revealed no evidence that silicone rubber was being used to seal fuel tanks. The source of the silicone rubber contamination could not be determined.

NTSB Probable Cause Narrative

blockage of both fuel lines from the left wing tank to the header tank by silicone rubber contaminants (foreign material), which resulted in fuel starvation. A related factor was the lack of suitable terrain for the forced landing.

Event Information

Type of Event Incident
Event Date 5/8/1997
Event Day of the Week Thursday
Time of Event 1310
Event Time Zone Central Daylight Time
Event City MUNDAY
Event State TEXAS
Event Country --
Zipcode of the event site 76371
Event Date Year 1997
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport MUNDAY MUNICIPAL
Event Location Nearest Airport ID 37F
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 2
Degrees magnetic from airport --
Airport Elevation 1473
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
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) 20
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
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) 5024
NTSB Notification Source --
NTSB Notification Date Sep 22 1997 12:00AM
NTSB Notification Time 1000
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:16PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3298Y
NTSB Number FTW97IA362
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 Ayres
Aircraft Model S2R-G10
Aircraft Series Identifier S2R-G10
Aircraft Serial Number G10-118
Certified Max Gross Weight --
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 5 1997 12:00AM
Airframe hours since last inspection 4
Airframe Hours 612
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BRIDWELL SPRAYING SERVICE, INC
Aircraft Owner Street Address 605 N. AVE. F
Aircraft Owner City HASKELL
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 79521
Operator is an individual? --
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 BJZG
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
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) Positioning
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 37F
Departure City
Departure State
Departure Country
Departure Time 1310
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code 15F
Destination City HASKELL
Destination State TX
Destination Country
Specific Phase of Flight Emergency landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --