# NTSB FTW89LA121: Beech G35, N4613D, Roby, TX, July 3, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 3, 1989, 11:00 local (16:00 UTC)
- Place: Roby, TX
- Coordinates: 32.739223, -100.369491 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.7392&lon=-100.3695&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report June 28, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 22887
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW89LA121
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22887/pdf
- Page: https://openairdocs.org/ntsb/FTW89LA121

## Probable cause

THE PILOT'S IMPROPER COMPENSATION FOR WIND CONDITIONS & HIS FAILURE TO MAINTAIN DIRECTIONAL CONTROL. FACTORS RELATED TO THE ACCIDENT WERE:  THE PILOT'S OPERATION OF THE AIRCRAFT WITH A KNOWN DEFICIENCY (WORN TIRE), THE ADVERSE WIND CONDITIONS, AND BARRELS (BARRICADE).

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - on ground/water, landing - roll
  - landing gear,tire - worn (contributing factor)
  - operation with known deficiencies in equipment - performed, pilot in command (contributing factor)
  - weather condition - crosswind (contributing factor)
  - weather condition - gusts (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - uncontrolled, pilot in command
- On ground/water collision with object, landing - roll
  - object - wall/barricade (contributing factor)

## Analysis

THE PILOT STATED THAT DURING A LANDING, A GUST OF WIND WAS ENCOUNTERED WHICH EFFECTED DIRECTIONAL CONTROL OF THE AIRCRAFT. IT THEN DEPARTED THE RUNWAY & STRUCK A BARREL BARRICADE BEFORE COMING TO REST. AN EXAM OF THE WRECKAGE REVEALED A BLOWN (RUPTURED) NOSE GEAR TIRE. THE TIRE WAS WORN TO THE CORD AREA & REPORTEDLY, IT HAD BEEN THAT WAY PRIOR TO THE ACCIDENT.

## Aircraft

- Registration: N4613D (not matched to a registry record)
- Reported make and model: BEECH G35
- Category: Airplane
- Serial number: D4786
- Engines: CONTINENTAL E-225-8 225 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Benjamin B. Maddux
- Registered owner: Benjamin B Maddux
- Departed: LBB, LUBBOCK, TX
- Airport: 56E, Fisher County, runway 16, 3,300 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 373 total, 44 in this make and model, 26 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 15 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 100 °F, dew point -0 °F

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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