# NTSB WPR25LA044: Aviat A-1B, N705AB, Show Low, AZ, November 19, 2024

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: November 19, 2024, 09:30 local (16:30 UTC)
- Place: Show Low, AZ · airport environment
- Coordinates: 34.254075, -110.03055 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.2541&lon=-110.0306&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Defining event: [Takeoff: 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-FSDO
- NTSB case key (mKey): 195526
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR25LA044
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/195526/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=195526
- Page: https://openairdocs.org/ntsb/WPR25LA044

## Probable cause

The pilot’s failure to maintain directional control during the takeoff.

## 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: [Aviat A-1B, 33 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2210406), [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: [Aviat A-1B, 21 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2210406), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md)
- [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on equipment; cases with it: [Aviat A-1B, 4 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=2210406), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Aviat A-1B, 24 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2210406), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md)
- [Takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Aviat A-1B, 9 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=2210406), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md)
- [Takeoff: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Aviat A-1B, 19 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=2210406), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md)

## Analysis

The pilot reported that, during takeoff, the airplane veered to the left and exited the runway. The airplane subsequently nosed over and came to rest inverted, which resulted in substantial damage to the wings and vertical stabilizer and rudder. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. At the time of the accident, the pilot was departing on runway 25 with a right quartering headwind at 7 knots.

## Aircraft

- Registration: [N705AB](https://openairdocs.org/aircraft/N705AB), registered now, S/N 2099, built 2000 (OpenAirDocs)
- Reported make and model: AVIAT AIRCRAFT INC A-1B
- Registry model: [Aviat A-1B](https://openairdocs.org/model/aviat-a-1b) (registry code 2210406) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2099
- Year built: 2000
- Airframe hours: 656.6
- Engines: Lycoming O-360-A1P 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 2, 2024
- Departed: SOW, Show Low, AZ
- Destination: FFZ, Mesa, AZ
- Airport: SOW, Show Low Rgnl, runway 25, 7,202 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 65; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: basicmed; last flight review October 28, 2024; seat: front; flight hours: 883 total, 22 in this make and model, 662 as pilot in command, 33 in the last 90 days, 21 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 7 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 41 °F, dew point 21 °F
- Altimeter: 30.14 inHg
- Icing: Unknown
- Turbulence: Unknown
- Observed at: KSOW, 1 nm away
- METAR: KSOW 191635Z AUTO 35007KT 10SM CLR 05/M06 A3014 RMK AO2

## Docket (2 files)

The files NTSB released with the investigation on April 22, 2025, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=195526. 2.7 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=18112906&FileExtension=pdf&FileName=6120_Redacted-Rel.pdf
- Photo array-courtesy of airport ops (item 2, PDF, 5 pages, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=18173137&FileExtension=pdf&FileName=Photo%20Array-Airport%20Ops-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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