# NTSB CHI08CA212: Ayres S2R-T34, N357CA, Clinton, IL, July 24, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 24, 2008, 11:00 local (16:00 UTC) - Place: Clinton, IL - Coordinates: 40.317222, -89.75 - Nearby events: https://openairdocs.org/map.md?lat=40.3172&lon=-89.7500&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Defining event: [Maneuvering-low-alt flying: Low altitude operation/event](https://openairdocs.org/ntsb-events/220) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 26, 2008 - Report: Approved by Office Director - NTSB case key (mKey): 68778 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI08CA212 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/68778/pdf - Page: https://openairdocs.org/ntsb/CHI08CA212 ## Probable cause The inadequate in-flight planning/decision making and the altitude/clearance not maintained by the pilot during the aerial application. A contributing factor was the guy wire. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Object/animal/substance: wire](https://openairdocs.org/ntsb-findings/03022032): Environmental issues › Physical environment · Contributed to outcome (probable cause); cases with it: [Ayres S2R-T34, 6 cases](https://openairdocs.org/ntsb-findings/03022032/cases.md?model=0970106), [All aircraft, 588 cases](https://openairdocs.org/ntsb-findings/03022032/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Ayres S2R-T34, 2 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=0970106), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) - [Performance/control parameters: altitude](https://openairdocs.org/ntsb-findings/01062012): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Ayres S2R-T34, 4 cases](https://openairdocs.org/ntsb-findings/01062012/cases.md?model=0970106), [All aircraft, 1,310 cases](https://openairdocs.org/ntsb-findings/01062012/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Maneuvering-low-alt flying: Low altitude operation/event](https://openairdocs.org/ntsb-events/220) (defining event); cases with it: [Ayres S2R-T34, 6 cases](https://openairdocs.org/ntsb-events/220/sequence.md?model=0970106), [All aircraft, 780 cases](https://openairdocs.org/ntsb-events/220/sequence.md) ## Analysis The pilot was spraying an agricultural field in an east/west direction, but later changed to a north/south direction so as to avoid an agricultural airplane spraying an adjacent field. During the 15th pass over the field, the airplane struck a guy wire with its right wing tip that resulted in structural damage to its right wing. The pilot then flew back and landed the airplane without further incident at the airport where it was based. The pilot was uninjured. The pilot stated that he should have resurveyed the field after changing the direction of the passes over the field. ## Factual narrative The pilot was spraying an agricultural field in an east/west direction but later changed to a north/south direction so as to avoid an agricultural airplane spraying an adjacent field. During the 15th pass over the field, the airplane struck a guy wire with its right wing tip that resulted in structural damage to its right wing. The pilot then flew back and landed the airplane without further incident at the airport where it was based. The pilot was uninjured. The pilot stated that he should have resurveyed the field after changing the direction of the passes over the field. ## Aircraft - Registration: [N357CA](https://openairdocs.org/deregistered/N357CA-2012-03-16), registration cancelled 2012-03-16, S/N 6000, built 1978 (OpenAirDocs) - Reported make and model: Ayres Corporation S2R-T34 - Registry model: [Ayres S2R-T34](https://openairdocs.org/model/ayres-s2r-t34) (registry code 0970106) (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: 6000 - Engines: Pratt & Whitney PT6 turbo prop - Damage: Substantial damage - Flight: Aerial application, Part 137 - Operator: Atlantic Ag Aviation - Registered owner: Craft Air Services, LLC - Airworthiness certificate: Special, Restricted (Special) - Departed: Clinton, IL - Destination: Clinton, IL ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 29; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2; flight hours: 1,093 total, 43 in this make and model, 106 in the last 90 days, 42 in the last 30 days ## Weather - Conditions: Visual (VMC), Day ## 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 20080724843269A](https://openairdocs.org/incident/20080724843269A), Jul 24, 2008: Ayres S2RT34NORMAL, Clinton, IL, Substantial damage. (-23) On July 24, 2008, near Clinton, IL, N357VS, operating as an agricultural aircraft struck a guide wire at the end of a swath run causing substantial… ## Other investigations on N357CA (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 ERA09LA394](https://openairdocs.org/ntsb/ERA09LA394), Jul 10, 2009: Ayres S2R-T34 (N357CA), Hertford, NC, substantial damage, 1 fatal. Probable cause: The in-flight collision with terrain for undetermined reasons. 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.