# NTSB WPR11CA396: Aviat A-1C-200, N53WY, Casper, WY, August 19, 2011

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: August 19, 2011, 11:45 local (17:45 UTC)
- Place: Casper, WY
- Coordinates: 42.907775, -106.464164 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.9078&lon=-106.4642&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: 2 uninjured
- Status: Completed, report October 17, 2011
- Report: Approved by Office Director
- NTSB office: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 81566
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR11CA396
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/81566/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=81566
- Page: https://openairdocs.org/ntsb/WPR11CA396

## Probable cause

The pilot's failure to maintain directional control during landing.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Aviat A-1C-200, 9 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2210411), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md)
- [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Aviat A-1C-200, 10 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2210411), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/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: [Aviat A-1C-200, 9 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2210411), [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: [Aviat A-1C-200, 6 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2210411), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md)

## Analysis

The pilot reported that following an uneventful landing in a tailwheel-equipped airplane, in light and variable wind conditions, the airplane suddenly pulled hard to the right. Despite his control inputs, the airplane ground looped. Subsequently, the left main landing gear collapsed, which resulted in substantial damage to the left wing. The pilot reported no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

## Factual narrative

The pilot reported that following an uneventful landing in a tailwheel equipped airplane in light and variable wind conditions, the airplane suddenly pulled hard to the right. Despite his control inputs, the airplane ground looped. Subsequently, the left main landing gear collapsed, which resulted in structural damage to the left wing. The pilot reported no mechanical malfunctions or failures with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N53WY](https://openairdocs.org/aircraft/N53WY), registered now, S/N 3084, built 2010 (OpenAirDocs)
- Reported make and model: AVIAT AIRCRAFT INC A-1C-200
- Registry model: [Aviat A-1C-200](https://openairdocs.org/model/aviat-a-1c-200) (registry code 2210411) (OpenAirDocs)
- Registry engine: [Lycoming IO-360-A1D6](https://openairdocs.org/engine/lycoming-io-360-a1d6) (registry code 41822, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 3084
- Airframe hours: 46
- Engines: LYCOMING IO-360-A1D6 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Christopher Burrows
- Registered owner: Burrows Kelly Sue Trustee
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 17, 2010, 46 hours before
- Departed: Alpine, WY
- Destination: CPR, Casper, WY
- Airport: CPR, Casper/Natrona County, runway 21, 10,165 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; injuries: none; private; airplane ratings: single-engine land; medical: class 2, without waivers/limitations; seat: front; flight hours: 560 total, 54 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point 30 °F
- Altimeter: 30.11 inHg
- Observed at: CPR

## 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 20110819017079A](https://openairdocs.org/incident/20110819017079A), Aug 19, 2011: Aviat Aircraft Inc A-1C-200, Casper, WY, Substantial damage. [privacy data omitted]

## Other investigations on N53WY (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 WPR13CA427](https://openairdocs.org/ntsb/WPR13CA427), Sep 27, 2013: Aviat A-1C-200 (N53WY), Dell, MT, substantial damage. Probable cause: The pilot's failure to maintain directional control while taxiing in gusting wind conditions.

## Docket (2 files)

The files NTSB released with the investigation on September 8, 2011, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=81566. 357 KB in all.

- Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 307 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40353694&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF
- Record of Conversation - Pilot (item 2, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40353695&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-%20Pilot-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.

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