# NTSB CHI06CA167: Cessna 170A, N9204A, Atwood, IL, June 24, 2006 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: June 24, 2006, 12:45 local (17:45 UTC) - Place: Atwood, IL - Coordinates: 39.803333, -88.490837 - Nearby events: https://openairdocs.org/map.md?lat=39.8033&lon=-88.4908&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report October 3, 2006 - Report: Approved by Office Director - Parties: FAA-Springfield FSDO - NTSB case key (mKey): 64190 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI06CA167 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/64190/pdf - Page: https://openairdocs.org/ntsb/CHI06CA167 ## Probable cause The loss of engine power during approach due to carburetor ice and the uneven terrain encountered during the forced landing which caused the airplane to nose over. Weather conducive to carburetor icing was a contributing factor. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, approach - vfr pattern - final approach - fuel system,carburetor - ice (cause) - weather condition - carburetor icing conditions (contributing factor) - Forced landing, emergency descent/landing - Nose over, emergency landing - terrain condition - rough/uneven (cause) ## Analysis The airplane was substantially damaged when it nosed over during a forced landing following a loss of engine power. The pilot sustained minor injuries. The pilot stated that the airplane was approximately 3 miles from the intended destination when the engine abruptly lost power. She noted that the propeller initially stopped and then began to windmill. She recalled checking the oil pressure and temperature indications, which were both within the green arc. The pilot reported that she applied carburetor heat after the loss of engine power with no effect. She stated that the airplane was outside of power-off gliding distance to the airport and she set-up for a forced landing to a soybean field below the aircraft. The pilot landed successfully; however, she was unable to stop prior to reaching the edge of the field. The airplane encountered an 8-inch rise at the edge of the field and nosed over. A post accident inspection did not reveal any anomalies consistent with a loss of engine power. The engine was subsequently test run. The engine ran smoothly and no discrepancies in its operation were observed. The temperature and dew point in the vicinity of the accident site were 26 degrees and 15 degrees Celsius, respectively. Data indicated the possibility of moderate carburetor icing at cruise power and serious icing at descent power under those conditions. ## Factual narrative The airplane was substantially damaged when it nosed over during a forced landing following a loss of engine power. The pilot sustained minor injuries. The pilot stated that the airplane was approximately 3 miles from the intended destination when the engine abruptly quit. She recalled checking the oil pressure and temperature indications, which were both within the green arc. The pilot reported that she applied carburetor heat after the loss of engine power with no effect. She stated that the airplane was outside of power-off gliding distance to the airport and she set-up for a forced landing to a soybean field below the aircraft. The pilot landed successfully, however, she was unable to stop prior to reaching an 8-inch rise at the edge of the field. The airplane subsequently nosed over when it encountered the uneven terrain. A post accident inspection did not reveal any anomalies consistent with a loss of engine power. The engine was subsequently test run. The engine ran smoothly and no discrepancies in its operation were observed. The temperature and dew point recorded at the University of Illinois-Willard Airport (CMI), located approximately 15 miles north of the accident site, about 8 minutes after the accident, were 26 degrees and 15 degrees Celsius, respectively. Data provided by Transport Canada indicated the possibility of moderate carburetor icing at cruise power and serious icing at descent power under those conditions. ## Aircraft - Registration: [N9204A](https://openairdocs.org/aircraft/N9204A), registered now, S/N 18965, built 1949 (OpenAirDocs) - Reported make and model: Cessna 170A - Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18965 - Airframe hours: 6817 - Engines: Continental C-145 reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 1, 2006 - Departed: GRE, Greenville, IL - Destination: Atwood, IL - Airport: 0K2, Cooch Landing Area ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 41; injuries: minor; commercial; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review September 1, 2004; seat: left; flight hours: 567 total, 3 in this make and model, 445 as pilot in command, 9 in the last 90 days, 3 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 350° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 79 °F, dew point 59 °F - Altimeter: 30.14 inHg - Observed at: CMI, 15 nm away ## 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 20060624014299A](https://openairdocs.org/incident/20060624014299A), Jun 24, 2006: Cessna 170A, Atwood, IL, Substantial damage. (-23) The pilot of N9204A reported that while approaching a private airport north of Atwood, Illinois for landing, and while still approximately three miles… 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.