# NTSB DFW07CA150: Ayres S2R-G10, N2254S, Colorado City, TX, July 6, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 6, 2007, 16:30 local (22:30 UTC) - Place: Colorado City, TX - Coordinates: 32.469444, -100.924163 - Nearby events: https://openairdocs.org/map.md?lat=32.4694&lon=-100.9242&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 25, 2007 - Report: Approved by Office Director - Parties: Lubbock, Texas - NTSB case key (mKey): 66150 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW07CA150 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66150/pdf - Page: https://openairdocs.org/ntsb/DFW07CA150 ## Probable cause The loss of engine power due to an oil leak. A contributing factor was the lack of suitable terrain for the forced landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, maneuvering - aerial application - reason for occurrence undetermined - aborted, atc personnel(artcc) (cause) - fluid,oil - leak (cause) - Forced landing, emergency descent/landing - In flight collision with terrain/water, emergency landing - terrain condition - rough/uneven (contributing factor) ## Analysis The engine of the turbine powered agricultural airplane lost power about 30 minutes into the aerial application flight. The 14,000-hour commercial pilot reported that while maneuvering, at approximately 10 feet above ground level (AGL), the engine lost power and he was unable to maintain flight. The pilot elected to execute a forced landing on nearby terraced cotton field. After touchdown, the single-engine airplane slid for approximately 150 to 200 feet before it came to rest in the upright position. There was no post impact fire. The wings, fuselage, and tail sustained structural damage. The propeller was also damaged. The FAA inspector, who responded to the site, found evidence of an engine oil leak along the left side and lower fuselage; however, he was unable to determine where the source of the engine oil leak. The examination of the engine oil reservoir revealed that the reservoir and the dipstick were dry. The airplane was reported to have about 100-gallons of fuel on board at the time of the mishap. A review of the airplane's logbooks indicate that the last annual inspection and 100-hour inspection was performed on March 10, 2007. The total time on the airframe at that time was determined to be 5,175.8 hours. ## Factual narrative The engine of the turbine powered agricultural airplane lost power about 30 minutes into the aerial application flight. The 14,000-hour commercial pilot reported that while maneuvering, at approximately 10 feet above ground level (AGL), the engine lost power and he was unable to maintain flight. The pilot elected to execute a forced landing on nearby terraced cotton field. After touchdown, the single-engine airplane slid for approximately 150 to 200 feet before it came to rest in the upright position. There was no post impact fire. The wings, fuselage, and tail sustained structural damage. The propeller was also damaged. The FAA inspector, who responded to the site, found evidence of an engine oil leak along the left side and lower fuselage; however, he was unable to determine where the source of the engine oil leak. The examination of the engine oil reservoir revealed that the reservoir and the dipstick were dry. The airplane was reported to have about 100-gallons of fuel on board at the time of the mishap. A review of the airplane's logbooks indicate that the last annual inspection and 100-hour inspection was performed on March 10, 2007. The total time on the airframe at that time was determined to be 5,175.8 hours. ## Aircraft - Registration: [N2254S](https://openairdocs.org/aircraft/N2254S), registered now, S/N G10-134 (OpenAirDocs) - Reported make and model: Ayres S2R-G10 - Registry model: [Ayres S2R-G10](https://openairdocs.org/model/ayres-s2r-g10) (registry code 0970217) (OpenAirDocs) - Registry engine: [AiResearch TPE331 series](https://openairdocs.org/engine/airesearch-tpe331-series) (registry code 01517, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: G10-134 - Engines: Garrett TPE 331-10 940 horsepower turbo prop - Damage: Substantial damage - Flight: Aerial application, Part 137 - Operator: Don Chiles, doing business as Chiles Flying Service Inc. - Registered owner: Don Chiles - Airworthiness certificate: Special, Restricted (Special) - Departed: T88, Colorado City, TX - Destination: T88 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 66; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; medical: class 2, without waivers/limitations; last flight review May 1, 2007; seat: single; flight hours: 14,000 total, 10,000 in this make and model, 200 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 63 °F - Altimeter: 30.12 inHg - Observed at: KSNK, 14 nm away 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.