# NTSB CEN11LA455: Couvillion S-17, N433GC, Toledo, OH, July 1, 2011 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 1, 2011, 18:30 local (22:30 UTC) - Place: Toledo, OH - Coordinates: 41.564723, -83.482223 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.5647&lon=-83.4822&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 3, 2012 - Report: Approved by Office Director - NTSB office: Central Region - Parties: FAA Cleveland FSDO - NTSB case key (mKey): 81014 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN11LA455 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/81014/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=81014 - Page: https://openairdocs.org/ntsb/CEN11LA455 ## Probable cause The loss of control during initial climb for undetermined reasons, which resulted in a hard landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Attain/maintain not possible (probable cause); cases with it: [Couvillion Rickey J S17, 1 case](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=05630J7), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md) - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Couvillion Rickey J S17, 1 case](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=05630J7), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Couvillion Rickey J S17, 1 case](https://openairdocs.org/ntsb-events/240/sequence.md?model=05630J7), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Emergency descent: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Couvillion Rickey J S17, 1 case](https://openairdocs.org/ntsb-events/440/sequence.md?model=05630J7), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) - [Landing: Hard landing](https://openairdocs.org/ntsb-events/092); cases with it: [Couvillion Rickey J S17, 1 case](https://openairdocs.org/ntsb-events/092/sequence.md?model=05630J7), [All aircraft, 2,102 cases](https://openairdocs.org/ntsb-events/092/sequence.md) ## Analysis The pilot reported that he found no discrepancies during the preflight inspection and that the engine run-up and before-takeoff checks were normal. Immediately after takeoff, the airplane entered an uncommanded right turn. The pilot was unable to keep the airplane from turning to the right as it climbed to about 200 to 300 feet above the ground. He pulled the throttle to idle and landed the airplane in a field. The touchdown was hard, and the airplane impacted a rock pile during the landing roll. Postaccident examination revealed that the right rudder pedal was sheared off and that the right rudder cable had slack in it and was twisted around the right rudder horn attachment fitting. If this twist had existing during the flight, it could have caused the uncommanded right turn; however, it is likely that the cable twisted around the rudder horn during the impact when the right rudder pedal separated and allowed the cable to go slack. Additionally, when the cable was straightened, it was noted to be the proper length, and rudder cable continuity was confirmed. Flight control cable continuity was also confirmed from the flight controls to the ailerons and the elevator. No mechanical discrepancy was noted that would have resulted in the uncontrolled right turn. ## Factual narrative On July 1, 2011, about 1830 eastern daylight time, an experimental amateur-built Couvillion S-17, N433GC, sustained substantial damage when it impacted the terrain following a loss of control during takeoff from runway 04 at the Toledo Executive Airport (TDZ), Toledo, Ohio. The private pilot was not injured. The airplane was registered and operated by the pilot as a personal flight under the provisions of the 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed at the time of the accident. The airplane was departing on a local flight. The pilot reported that it was his first flight in the airplane since he had purchased it from the previous owner. He reported that he inspected the flight controls and the cable attachment points during the preflight inspection and they appeared normal. The engine run-up and before takeoff checks were normal. He reported that he applied the throttle slowly to full power during takeoff. The airplane tracked straight on the runway until after liftoff. He reported that immediately after liftoff, the airplane entered into a sweeping right turn. The pilot was unable to keep the airplane from turning to the right as it climbed to about 200 – 300 feet above the ground. The airplane had turned about 180 degrees when he pulled the throttle to idle and attempted to land in a field. The airplane continued to turn as it overflew a fence, landed hard, and impacted a rock pile during the landing roll. A Federal Aviation Administration inspector examined the airplane and reported that it had sustained substantial damage. The airframe was twisted and the left wing bent. The right main landing gear was sheared off, and the right horizontal stabilizer was torn on the bottom. The right rudder pedal was sheared off. The right rudder cable was found slack and the cable attachment was found twisted around the right rudder horn attachment fitting. When the cable was straightened, it was the proper length and it confirmed rudder cable continuity. Flight control cable continuity was confirmed from the flight controls to their respective attach points on the flight control surfaces. No mechanical discrepancy was noted that could explain the reason for the uncontrolled right turn. The airplane had a total of 4.1 hours of flight time at the time of the accident. The pilot held a private pilot certificate with single-engine and multi-engine airplane land ratings and a single-engine seaplane rating. He held a third class medical certificate. He reported that he had a total of 1,353 flight hours, but with no flight time in the make and model of the accident airplane. He had built and flown a two-seat experimental amateur-built airplane that was similar to the accident airplane, and had logged about 150 – 200 hours of flight time in it. The original builder of the airplane reported that three pilots had flown the airplane prior to him selling it to a second owner. He reported that the three pilots did not indicateany discrepancies with the airplane. At 1953, the surface weather observation at TDZ was: wind 090 degrees at 6 knots; visibility 10 miles; sky clear; temperature 29 degrees Celsius; dew point 17 degrees Celsius; altimeter 30.00 inches of mercury. ## Aircraft - Registration: [N433GC](https://openairdocs.org/deregistered/N433GC-2012-10-03), registration cancelled 2012-10-03, S/N 0300011, built 2011 (OpenAirDocs) - Reported make and model: Couvillion S-17 - Registry model: [Couvillion Rickey J S17](https://openairdocs.org/model/couvillion-rickey-j-s17) (registry code 05630J7) (OpenAirDocs) - Registry engine: [Rotax 503 DCDI](https://openairdocs.org/engine/rotax-503-dcdi) (registry code 55566, 2 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 0300011 - Airframe hours: 4.1 - Engines: ROTAX 503 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Joseph Deaton - Registered owner: Joseph Deaton - Airworthiness certificate: Special, Experimental (Special) - Departed: TDZ, Toledo, OH - Destination: TDZ, Toledo, OH - Airport: TDZ, Toledo Executive Airport, runway 04, 3,799 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; injuries: none; private; airplane ratings: single-engine sea, single-engine land, multi-engine land; medical: class 3, with waivers/limitations; last flight review September 18, 2010; seat: center; flight hours: 1,353 total, 0 in this make and model, 1,112 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 63 °F - Altimeter: 30.00 inHg - Observed at: TDZ ## 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 20110701014519A](https://openairdocs.org/incident/20110701014519A), Jul 1, 2011: Couvillion Rickey J S17, Millbury, OH, Substantial damage. On July 1 2011 [privacy data omitted], pilot in command of N433GC was preforming his first test flight of his amature built rans S17 stinger ultralight.… ## Docket (8 files) The files NTSB released with the investigation on April 2, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=81014. 8.6 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 417 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364889&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Record of Conversation -1 (item 2, .PDF, 53 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364989&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-1-Master.PDF - Record of Conversation -2 (item 3, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364990&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-2-Master.PDF - Record of Conversation - 3 (item 4, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364892&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-%203-Master.PDF - Photo 1: Engine, propeller and wings (item 5, .PDF, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364894&FileExtension=.PDF&FileName=Photo%201%3A%20Engine,%20propeller%20and%20wings-Master.PDF - Photo 2: Right rudder cable (item 6, .PDF, 1.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364895&FileExtension=.PDF&FileName=Photo%202%3A%20Right%20rudder%20cable-Master.PDF - Photo 3: Rudder cables and rudder pedals (item 7, .PDF, 2.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364896&FileExtension=.PDF&FileName=Photo%203%3A%20Rudder%20cables%20and%20rudder%20pedals-Master.PDF - Photo 4: Left wing (item 8, .PDF, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40364897&FileExtension=.PDF&FileName=Photo%204%3A%20Left%20wing-Master.PDF 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.