# NTSB WPR21LA206: Cessna 170A, N9557A, Mesquite, NV, May 23, 2021

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: May 23, 2021, 09:00 local (16:00 UTC)
- Place: Mesquite, NV · Airport Enviornment
- Coordinates: 36.833139, -114.05588 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.8331&lon=-114.0559&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 103149
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA206
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103149/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103149
- Page: https://openairdocs.org/ntsb/WPR21LA206

## Probable cause

The pilot’s failure to maintain airplane control during the landing roll, which resulted in a nosed over.

## Findings

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

- [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 170A, 33 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072304), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/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 170A, 23 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072304), [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-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Cessna 170A, 14 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=2072304), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md)

## Analysis

The pilot of the tailwheel-equipped airplane reported that, during the landing rollout, he noted the wind was stronger than anticipated and the airplane was drifting toward the wind. He added rudder input to correct, with no effect, so he added additional rudder correction. He accidentally applied the brakes, and the airplane nosed over and came to rest inverted. The rudder was substantially damaged. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N9557A](https://openairdocs.org/deregistered/N9557A-2023-03-01), registration cancelled 2023-03-01, S/N 19393 (OpenAirDocs)
- Reported make and model: CESSNA 170A
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 19393
- Year built: 1950
- Airframe hours: 2952
- Engines: Continental Aerospace Technologies O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, January 12, 2021, 45 hours before
- Destination: Same as departure
- Airport: 67L, Mesquite, runway 02/20, 5,121 × 75 ft, asphalt
- Equipment: ADS-B, Stall warning system

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 72; injuries: none; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review June 12, 2019; seat: left; flight hours: 2,453 total, 115 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: variable at 5 knots, gusting 10
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 80 °F
- Altimeter: 29.75 inHg
- Observed at: 67L

## 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 20210523009969A](https://openairdocs.org/incident/20210523009969A), May 23, 2021: Cessna 170A, Mesquite, NV, Substantial damage. On may 23, 2021, at approximately 0930 PDT, the las vegas flight standards district office received notification of a part 91 crash, involving a Cessna 170A…

## Other investigations on N9557A (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 FTW76DPD43](https://openairdocs.org/ntsb/FTW76DPD43), Jun 4, 1976: Cessna 170 (N9557A), Weatherford, TX, substantial damage

## Docket (2 files)

The files NTSB released with the investigation on September 1, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103149. 6.7 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 4.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12658777&FileExtension=pdf&FileName=6120%20Pilot_Operator%20Aircraft%20Accident_Incident%20Report_Redacted-Rel%20(3)-Rel.pdf
- Photo (item 2, PDF, 1 page, 2.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12374936&FileExtension=pdf&FileName=Photo-Rel.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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