# NTSB WPR21LA207: Cessna TU206, Phoenix, AZ, May 21, 2021

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: May 21, 2021, 12:23 local (19:23 UTC)
- Place: Phoenix, AZ · Airport Environment
- Coordinates: 33.434278, -112.01158 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.4343&lon=-112.0116&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: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Western Pacific Region
- Parties: FAA
- NTSB case key (mKey): 103150
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA207
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103150/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103150
- Page: https://openairdocs.org/ntsb/WPR21LA207

## Probable cause

The pilot's failure to maintain directional control after an encounter with a windshear during the landing roll, which resulted in a runway excursion.

## 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: [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: [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md)
- [Wind: windshear](https://openairdocs.org/ntsb-findings/03034020): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [All aircraft, 90 cases](https://openairdocs.org/ntsb-findings/03034020/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: [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md)

## Analysis

The pilot reported that, during the landing roll, the airplane encountered “windshear.” The left wing started to lift, while correcting the right wing impacted the surface. The airplane exited the runway and came to rest on the taxiway. The airplane sustained substantial damage to the right wing. The pilot reported that there were no mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Aircraft

- Registration: XBBLB (not matched to a registry record)
- Reported make and model: CESSNA TU206 (G)
- Category: Airplane
- Serial number: U20606926
- Year built: 1986
- Airframe hours: 1709.5
- Engines: Continental TSIO-520-M 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Bylsa Drilling Sa De Cv
- Registered owner: Bylsa Drilling Sa De Cv
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, May 3, 2021, 22 hours before
- Departed: TUS, Tucson, AZ
- Destination: Same as departure
- Flight plan: VFR
- Airport: PHX, Phoenix Sky Harbor Intl, runway 25L, 7,800 × 150 ft, concrete
- Equipment: Stall warning system, Electronic primary flight display, Auto-pilot, ADS-B

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; injuries: none; private; airplane ratings: single-engine land; medical: class 1, with waivers/limitations; last flight review September 15, 2020; seat: front; flight hours: 570 total, 320 in this make and model, 570 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 12 knots, gusting 18
- Visibility: 10 statute miles
- Temperature: 84 °F, dew point 10 °F
- Altimeter: 29.85 inHg
- Observed at: KPHX, 1 nm away
- METAR: KPHX 211853Z COR 24012G18KT 10SM FEW090 FEW140 29/M12 A2985 RMK AO2 T02891117

## Docket (2 files)

The files NTSB released with the investigation on August 3, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103150. 2.1 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12337757&FileExtension=pdf&FileName=WPR21LA207%20pilot%206120_Redacted-Rel.pdf
- Damage photos (item 2, PDF, 2 pages, 567 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12327075&FileExtension=pdf&FileName=Damage%20Photos-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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