Individually Owned: 150,657
Corporate Owned: 137,281
A.N.F Air Service Airport
Aircraft Accident/Incident Report
Garwood, Texas 77442
Wednesday, March 31, 1999 17:15 CST
NTSB Narrative Summary Released at Completion of Accident
The commercial pilot lost control of the agricultural airplane during the landing roll following the failure of the right wheel brake system. The pilot initially applied brake pressure to slow down the airplane's landing roll. When the pilot attempted to re-apply brake pressure, the right brake pedal 'fell all the way to the floorboard.' The airplane made a gradual left turn, which the pilot could not compensate for with an inoperative right brake. The left wing impacted a concrete pole located on the west side of the airstrip. The FAA inspector stated that the failure of the right brake was due to the eye bolt, which connects the brake master cylinder to the top portion of the rudder pedal, pulling out to the master cylinder. The operator stated that the only possible way for the eye bolt to become separated from the master cylinder was for the eye bolt to 'pull out' of the threaded hole in the brake master cylinder. The operator reported that the time in service for the failed part was unknown. He added that the bottom 2 or 3 threads of the eye bolt appeared to be damaged or stripped, which 'could have resulted in the eye bolt pulling out' of the cylinder.
NTSB Probable Cause Narrative
The pilot's inability to maintain directional control of the airplane as result of the failure of the right brake system due to the stripped threads on the eye bolt connecting the brake pedal to the brake master cylinder.
Event Information
| Type of Event | Accident |
| Event Date | 3/31/1999 |
| Event Day of the Week | Wednesday |
| Time of Event | 1715 |
| Event Time Zone | Central Standard Time |
| Event City | GARWOOD |
| Event State | TEXAS |
| Event Country | -- |
| Zipcode of the event site | 77442 |
| Event Date Year | 1999 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | A.N.F AIR SERVICE |
| Event Location Nearest Airport ID | NONE |
| 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 | 180 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Witness |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 24 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 360 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | Unknown |
| 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) | 190 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 6 1999 12:00AM |
| NTSB Notification Time | 930 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 12 2000 11:26AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N8789S |
| NTSB Number | FTW99LA107 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Air Tractor |
| Aircraft Model | AT-301 |
| Aircraft Series Identifier | AT-301 |
| Aircraft Serial Number | 301-0193 |
| Certified Max Gross Weight | 5000 |
| 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 | Mar 9 1999 12:00AM |
| Airframe hours since last inspection | 23 |
| Airframe Hours | 7400 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | MICHAEL L. THOMPSON |
| Aircraft Owner Street Address | P.O. BOX 407 |
| Aircraft Owner City | GARWOOD |
| Aircraft Owner State | TX |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 77442 |
| 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 | A3NG |
| 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 | Unknown |
| Indicates Domestic or International Flight | Unknown |
| Operator carrying Pax/Cargo/Mail | Unknown |
| Type of Flying (Per_Bus / Primary) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1645 |
| Departure Time Zone | CST |
| 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 | 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 | 35 |
| Runway Length | 2600 |
| Runway Width | 90 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |