# NTSB WPR23LA171: Cessna 170B, N2207D, Queen Creek, AZ, April 29, 2023 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: April 29, 2023, 09:30 local (16:30 UTC) - Place: Queen Creek, AZ · Pegasus Airpark (private) - Coordinates: 33.208725, -111.61724 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.2087&lon=-111.6172&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: 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): 107166 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR23LA171 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/107166/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=107166 - Page: https://openairdocs.org/ntsb/WPR23LA171 ## Probable cause The airplane’s encounter with a dust devil after landing, which resulted in a loss of directional control. ## 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 · Attain/maintain not possible (probable cause); cases with it: [Cessna 170B, 74 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072306), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Wind: dust devil/whirlwind](https://openairdocs.org/ntsb-findings/03034060): Environmental issues › Conditions/weather/phenomena · Ability to respond/compensate (probable cause); cases with it: [Cessna 170B, 2 cases](https://openairdocs.org/ntsb-findings/03034060/cases.md?model=2072306), [All aircraft, 38 cases](https://openairdocs.org/ntsb-findings/03034060/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: [Cessna 170B, 84 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072306), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The pilot reported encountering a dust devil (also called a whirlwind) during rollout following a full stall landing maneuver. The airplane did not have any aileron authority due to the low airspeed at the time of the encounter. The left wing subsequently impacted the ground and the airplane departed the runway. It continued to roll down a hill before flipping and coming to rest inverted, resulting in substantial damage to the empennage and both wings. The pilot reported there were no preimpact mechanical malfunctions or failures with the airframe or the engine that would have precluded normal operation. ## Aircraft - Registration: [N2207D](https://openairdocs.org/aircraft/N2207D), registered now, S/N 20359, built 1952 (OpenAirDocs) - Reported make and model: CESSNA 170B - Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 20359 - Year built: 1952 - Airframe hours: 6099 - Engines: Continental C-145-2 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 16, 2022, 25 hours before - Departed: 5AZ3, Queen Creek, AZ - Destination: Same as departure - Airport: 5AZ3, Pegusas Airpark, runway 08, 5,124 × 80 ft, asphalt - Equipment: ADS-B, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 50; injuries: fatal; private; airplane ratings: single-engine land; medical: class 3, unknown; last flight review April 26, 2022; seat: left; restraint: 4-point; flight hours: 1,000 total, 200 in this make and model, 950 as pilot in command, 20 in the last 90 days, 10 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 86 °F, dew point 21 °F - Altimeter: 30.04 inHg - Observed at: KIWA, 6 nm away - METAR: KIWA 291653Z 00000KT 10SM CLR 30/M06 A3004 ## 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 20230429007719A](https://openairdocs.org/incident/20230429007719A), Apr 29, 2023: Cessna 170B, Queen Creek, AZ, Substantial damage. The pilot landed, exited the runway and begain taxing back to the hanger when a dust devil crossed paths with the aircraft and flipped it over. The pilot was… ## Other investigations on N2207D (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 SEA67D0003](https://openairdocs.org/ntsb/SEA67D0003), Apr 26, 1966: Cessna 170B (N2207D), Aldrwood Mnr, WA, substantial damage ## Docket (2 files) The files NTSB released with the investigation on October 20, 2023, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=107166. 5.3 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 5.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16103068&FileExtension=pdf&FileName=N2207D%206120_Redacted-Rel.pdf - Photos (item 2, PDF, 1 page, 193 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=16103250&FileExtension=pdf&FileName=Accident%20Photographs%20%20N2207D-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. --- 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.