# NTSB CHI08CA262: Schweizer G-164B, N773D, Nielsville, MN, August 23, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 23, 2008, 09:00 local (14:00 UTC) - Place: Nielsville, MN - Coordinates: 47.523056, -96.809165 - Nearby events: https://openairdocs.org/map.md?lat=47.5231&lon=-96.8092&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 26, 2008 - Report: Approved by Office Director - Parties: Minneapolis, MN - NTSB case key (mKey): 68944 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI08CA262 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/68944/pdf - Page: https://openairdocs.org/ntsb/CHI08CA262 ## Probable cause The pilot's failure to maintain directional control of the airplane during the crosswind landing. Factors associated with the accident were the crosswind and the rough terrain. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Not specified (probable cause); cases with it: [Schweizer G-164B, 2 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=8059055), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) - [Wind: gusts](https://openairdocs.org/ntsb-findings/03034045): Environmental issues › Conditions/weather/phenomena · Not specified (probable cause); cases with it: [Schweizer G-164B, 2 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=8059055), [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/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: [Schweizer G-164B, 6 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=8059055), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Terrain: rough terrain](https://openairdocs.org/ntsb-findings/03021015): Environmental issues › Physical environment · Not specified (probable cause); cases with it: [Schweizer G-164B, 2 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md?model=8059055), [All aircraft, 442 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md) - [Landing gear system: main landing gear](https://openairdocs.org/ntsb-findings/01023210): Aircraft › Aircraft systems · Capability exceeded; cases with it: [Schweizer G-164B, 2 cases](https://openairdocs.org/ntsb-findings/01023210/cases.md?model=8059055), [All aircraft, 241 cases](https://openairdocs.org/ntsb-findings/01023210/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Schweizer G-164B, 8 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=8059055), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Schweizer G-164B, 13 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=8059055), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Schweizer G-164B, 3 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=8059055), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis The pilot stated he was landing to the north with winds from 290 degrees at 12 knots, gusting to 18 knots. He stated that after touching down he applied the right brake which was "poor" and the airplane turned to the left. The airplane traveled into a wheat field where it contacted a furrow. The pilot stated the airplane bounced up and weathervaned even more. The airplane settled to the ground and the right main landing gear collapsed when it dug into the ground. ## Factual narrative On August 23, 2008, at 0900 central daylight time, a Schweizer G-164B, N773D, operated by Sky Tractor Supply, experienced a separation of the right main landing gear following a loss of control while landing at a private airstrip in Nielsville, North Dakota. The commercial pilot was not injured. The airplane sustained substantial damage to the right lower wing and fuselage. The aerial application flight was operating under Title 14 Code of Federal Regulations Part 137. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated from a private airstrip in Hillsboro, North Dakota, at 0830. The pilot stated he was landing to the north with winds from 290 degrees at 12 knots, gusting to 18 knots. He stated that after touching down he applied the right brake which was "poor" and the airplane turned to the left. The airplane traveled into a wheat field where it contacted a furrow. The pilot stated the airplane bounced up and weathervaned even more. The airplane settled to the ground and the right main landing gear collapsed when it dug into the ground. ## Aircraft - Registration: [N773D](https://openairdocs.org/aircraft/N773D), registered now, S/N 773B, built 1985 (OpenAirDocs) - Reported make and model: Schweizer G-164B - Registry model: [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b) (registry code 8059055) (OpenAirDocs) - Registry engine: [Walter M601E-11](https://openairdocs.org/engine/walter-m601e-11) (registry code 64006, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 773B - Engines: Walter E-11 turbo prop - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Sky Tractor Supply Company - Airworthiness certificate: Special, Restricted (Special) - Departed: 5ND9, Hillsboro, ND - Destination: PVT, Nielsville, MN ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; flight hours: 12,800 total, 10,400 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 12 knots, gusting 18 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 149 °F, dew point 118 °F - Altimeter: 29.95 inHg ## 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 20080823846379A](https://openairdocs.org/incident/20080823846379A), Aug 23, 2008: Scwzer G164B, Nielsville, MN, Substantial damage. (-23) Finished spraying field and was landing on a grass runway. Touched down on left main. Aircraft went off into the field, skidded to a stop. 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.