# NTSB WPR10CA350: Cessna 170, N3967V, Truckee, CA, July 14, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 14, 2010, 13:21 local (20:21 UTC) - Place: Truckee, CA - Coordinates: 39.319999, -120.139442 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.3200&lon=-120.1394&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Defining event: [Approach-VFR go-around: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 21, 2010 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: FAA FSDO - NTSB case key (mKey): 76631 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR10CA350 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76631/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76631 - Page: https://openairdocs.org/ntsb/WPR10CA350 ## Probable cause The pilot’s failure to maintain directional control during an aborted landing, resulting in a collision with obstacles. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Object/animal/substance](https://openairdocs.org/ntsb-findings/03022000): Environmental issues › Physical environment · Response/compensation (probable cause); cases with it: [Cessna 170, 1 case](https://openairdocs.org/ntsb-findings/03022000/cases.md?model=2072302), [All aircraft, 224 cases](https://openairdocs.org/ntsb-findings/03022000/cases.md) - [Use of equip/info](https://openairdocs.org/ntsb-findings/02063000): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 170, 1 case](https://openairdocs.org/ntsb-findings/02063000/cases.md?model=2072302), [All aircraft, 111 cases](https://openairdocs.org/ntsb-findings/02063000/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna 170, 7 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072302), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Cessna 170, 2 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=2072302), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Approach-VFR go-around: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Cessna 170, 7 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=2072302), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Approach-VFR go-around: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490); cases with it: [Cessna 170, 2 cases](https://openairdocs.org/ntsb-events/490/sequence.md?model=2072302), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The pilot reported that while flying in the traffic pattern the Automated Weather Observing System (AWOS) reported the wind as calm. He stated that just after the airplane touched down a gust of wind struck the airplane and the airplane bounced. The pilot added power but the airplane bounced a second time and turned to the right. He said that he initiated an aborted landing then pulled the nose of the airplane up to go over a berm located on the right side of the runway. The left main landing gear cleared the berm but the right main landing gear struck a rock, causing the aircraft to nose over. The pilot reported that there were no known mechanical malfunctions or failures prior to the accident. ## Factual narrative The pilot reported that while flying in the traffic pattern the Automated Weather Observing System (AWOS) reported the wind as calm. He stated that just after the airplane touched down a gust of wind struck the airplane and the airplane bounced. The pilot added power but the airplane bounced a second time and turned to the right. He said that he initiated an aborted landing then pulled the nose of the airplane up to go over a berm located on the right side of the runway. The left main landing gear cleared the berm but the right main landing gear struck a rock, causing the aircraft to nose over. The pilot reported that there were no known mechanical malfunctions or failures prior to the accident. ## Aircraft - Registration: [N3967V](https://openairdocs.org/deregistered/N3967V-2010-08-23), registration cancelled 2010-08-23, S/N 18286, built 1948 (OpenAirDocs) - Reported make and model: CESSNA 170 - Registry model: [Cessna 170](https://openairdocs.org/model/cessna-170) (registry code 2072302) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18286 - Airframe hours: 2580 - Engines: CONT MOTOR C145-2 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Tahoe Wings LLC - Registered owner: Tahoe Wings LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, January 1, 2009, 33 hours before - Departed: KTRK, Truckee, CA - Destination: KTRK, Truckee, CA - Airport: KTRK, Truckee-Thahoe Airport, runway 28, 7,000 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 70; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review November 11, 2009; seat: left; flight hours: 816 total, 248 in this make and model, 550 as pilot in command, 3 in the last 90 days, 1 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 320° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 81 °F, dew point 41 °F - Altimeter: 30.22 inHg - Observed at: KTRK ## 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 20100714037889A](https://openairdocs.org/incident/20100714037889A), Jul 14, 2010: Cessna 170, Truckee, CA, Substantial damage. During landing, the pilot stated that he experienced a crosswind gust. He lost control, struck a boulder, and the aircraft flipped onto its back approximately… ## Docket (1 files) The files NTSB released with the investigation on August 3, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76631. 437 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 437 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40333775&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.