# NTSB FTW91DPG20: Ayres S2R, N3682X, Dumas, AR, September 25, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: September 25, 1991, 09:45 local (14:45 UTC)
- Place: Dumas, AR
- Location: 33.8845° N, 91.5343° W: Placed by OpenAirDocs at BILLY FREE MUNI (0M0), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.8845&lon=-91.5343&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 24, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 23209
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW91DPG20
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23209/pdf
- Page: https://openairdocs.org/ntsb/FTW91DPG20

## Probable cause

THE FAILURE OF A WORN RUDDER ADJUSTMENT BAR. A FACTOR WAS THE PILOT'S INABILITY TO MAINTAIN DIRECTIONAL CONTROL.

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - flt control syst,rudder control attach points - failure,total
- Loss of control - on ground/water, landing - roll
  - precautionary landing - performed, pilot in command
  - directional control - not possible, pilot in command
  - landing gear,main gear strut - failure,total
  - landing gear,main gear strut - overload
- On ground/water encounter with terrain/water, landing - roll

## Analysis

FOLLOWING A DAYLIGHT TAKEOFF, THE PILOT LOST RUDDER CONTROL DUE TO THE FAILURE OF A WORN RUDDER ADJUSTMENT BAR. THE PILOT MANEUVERED THE AIRPLANE BACK TO THE RUNWAY AND ATTEMPTED AN EMERGENCY LANDING. DURING THE LANDING ROLL, CONTROL WAS LOST AND THE AIRPLANE VEERED RIGHT OFF THE RUNWAY. AFTER THE AIRPLANE LEFT THE RUNWAY, THE RIGHT MAIN GEAR SHEARED.

## Aircraft

- Registration: [N3682X](https://openairdocs.org/deregistered/N3682X-1998-02-20), registration cancelled 1998-02-20, S/N 2152R (OpenAirDocs)
- Reported make and model: Ayres S2R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Category: Airplane
- Serial number: 2152R
- Engines: P&W R1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Glen S. Frizzell, doing business as Frizzell Air Service, Inc.
- Registered owner: Glen S. Frizzell
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 25, 1991, 450 hours before
- Departed: NONE, STAR CITY, AR
- Airport: 0M0, Billy Free, runway 36, 5,000 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 6,602 total, 4,421 in this make and model, 6,515 as pilot in command, 500 in the last 90 days, 85 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 52 °F
- Altimeter: 30.00 inHg
- Observed at: PBF, 60 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19910925046359A](https://openairdocs.org/incident/19910925046359A), Sep 25, 1991: Ayres S2RR1340REST, Dumas, AR, Substantial damage. Rudder bar failed on takeoff. Diverted to Dumas. Lost directional control landing. Hit ditch. Rudder bar badly worn

## Other investigations on N3682X (1)

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.

- [NTSB MKC88LA148](https://openairdocs.org/ntsb/MKC88LA148), Aug 2, 1988: Rockwell S-2R (N3682X), Tarry, AR, substantial damage

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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