# NTSB DFW05CA225: Ayres S2R-T15, N4010M, Taylor, TX, August 31, 2005

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: August 31, 2005, 00:00 local (05:00 UTC)
- Place: Taylor, TX
- Coordinates: 30.571111, -97.443054
- Nearby events: https://openairdocs.org/map.md?lat=30.5711&lon=-97.4431&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 31, 2006
- Report: Approved by Office Director
- Parties: San Antonio FSDO
- NTSB case key (mKey): 62362
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW05CA225
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62362/pdf
- Page: https://openairdocs.org/ntsb/DFW05CA225

## Probable cause

The pilot's misjudgement while landing resulting in an overrun.  A factor was fluctuating engine power.

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, landing
  - engine assembly - fluctuating (contributing factor)
- Overrun, landing
  - distance/altitude - misjudged, pilot in command (cause)

## Analysis

The 14,000-hour pilot shut down the 750-horsepower engine on the agricultural airplane after the engine began surging between idle and full power.  He stated in the NTSB Form 6120.1/2, that he elected to divert to a nearby airport.   The pilot shut down the engine prematurely which resulted in a higher than desired altitude with a high approach airspeed.  The airplane touched down long and fast on the 4,000 foot long runway, resulting in an overrun.   The pilot attempted to intentionally ground loop the airplane to avoid overrunning the departure end of the runway; however, he was unable due to the surface of the runway being damp.  The airplane overran the departure end of the runway, collided with trees, and came to rest in a creek.   Weather at the time of the accident was reported as clear skies, calm winds, temperature of 72 degrees Fahrenheit, and altimeter 29.87 inches of Mercury.

## Factual narrative

This report is based on information received by the NTSB.  Additional details may be found in the NTSB's public docket for this case.  For further information, please contact the NTSB Office of Public Inquiries.

## Aircraft

- Registration: [N4010M](https://openairdocs.org/deregistered/N4010M-2026-08-14), registration cancelled 2026-08-14, S/N T15-001, built 1979 (OpenAirDocs)
- Reported make and model: Ayres S2R-T15
- Registry model: [Ayres S2R-T15](https://openairdocs.org/model/ayres-s2r-t15) (registry code 0970105) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: T15-001
- Airframe hours: 9771
- Engines: Honeywell TPE-331-6-252 750 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Tri County Sprayers, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 1, 2005
- Departed: T74, Taylor, TX
- Destination: T74, Taylor, TX
- Airport: T74, Taylor Municipal Airport, runway 35, 4,000 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; injuries: none; flight instructor; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; seat: single; flight hours: 14,000 total, 6,000 in this make and model, 350 in the last 90 days, 120 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 63 °F
- Altimeter: 29.87 inHg
- Observed at: KGTU

## 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 20050831026889A](https://openairdocs.org/incident/20050831026889A), Aug 31, 2005: Ayres S2RT15NORMAL, Taylor, TX, Substantial damage. (-23) The flight began about 7:25 am and about 5 miles from Taylor, Texas (T74) the engine began surging from full power to idle. The pilot elected toland at…

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.