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| Date: | Friday 11 August 2006 |
| Time: | 10:30 LT |
| Type: |  Ayres S2R-T34 |
| Owner/operator: | Mcginty Flying Service Inc |
| Registration: | N444HF |
| MSN: | T36-191 |
| Year of manufacture: | 1992 |
| Total airframe hrs: | 8409 hours |
| Engine model: | Pratt & Whitney PT6A-36 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Parkdale, Arkansas -
 United States of America
|
| Phase: | Unknown |
| Nature: | Agricultural |
| Departure airport: | Parkdale, AR |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The 6,000-hour commercial pilot made a forced landing to a cotton field after the turbine engine installed on his agricultural airplane stopped producing power. The pilot landed in a field and subsequently collided with trees. An inspector with the Federal Aviation Administration performed an on-scene examination of the airplane. According to the inspector, the airplane sustained structural damage to the wings. Examination of the engine revealed a compressor-turbine blade had failed causing extensive damage to the vein ring, segments and small exit duct. This failure also resulted in debris contacting the power-turbine blades, which subsequently damaged all of the power-turbine blades and disc. The failed blade was never located and the mode of failure could not be determined. A review of the airplane's maintenance history revealed that the compressor-turbine disc was rebladed in November 1994, and had accumulated approximately 4,987.7 hours since new. The disc itself had accumulated approximately 7,941.4 hours and 7,170 cycles.
Probable Cause: The failure of a compressor turbine blade for undetermined reasons, which resulted in a total loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
Accident investigation:
 |
|
Sources:
NTSB DFW06LA198
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 08-Oct-2022 06:53 | ASN Update Bot | Added |
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