# NTSB ANC22LA061: Maule M-4-210, N4743T, Aniak, AK, July 26, 2022

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: July 26, 2022, 14:10 local (22:10 UTC)
- Place: Aniak, AK
- Coordinates: 61.043611, -158.33416
- Nearby events: https://openairdocs.org/map.md?lat=61.0436&lon=-158.3342&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: Alaska Regional Office
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 105597
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC22LA061
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/105597/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=105597
- Page: https://openairdocs.org/ntsb/ANC22LA061

## Probable cause

The pilot’s selection of unsuitable terrain for landing which resulted in a nose-over.

## Findings

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

- [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Maule M-4-210, 1 case](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=5460108), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md)
- [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Awareness of condition (probable cause); cases with it: [Maule M-4-210, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=5460108), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/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: [Maule M-4-210, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=5460108), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md)

## Analysis

The pilot of the tailwheel-equipped airplane reported that, he was landing upslope on an off-airport landing site. During the landing rollout and as he was applying the brakes, the airplane encountered a “divot” on the landing surface. The airplane subsequently nosed-over which resulted in substantial damage to the wings, lift struts, vertical stabilizer and rudder. The pilot reported that there were no preaccident mechanical malfunctions or anomalies with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N4743T](https://openairdocs.org/aircraft/N4743T), registered now, S/N 1008, built 1964 (OpenAirDocs)
- Reported make and model: MAULE M-4-210
- Registry model: [Maule M-4-210](https://openairdocs.org/model/maule-m-4-210) (registry code 5460108) (OpenAirDocs)
- Registry engine: [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series) (registry code 17025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1008
- Year built: 1964
- Airframe hours: 1757
- Engines: CONT MOTOR IO-360 SER 210 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Andrews Nathaniel C
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 26, 2022
- Destination: Same as departure
- Airport: PVT, Private, runway 18, 500 × 15 ft, grass/turf
- Equipment: Stall warning system, ADS-B

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review May 1, 2022; seat: left; restraint: lap only; flight hours: 588 total, 233 in this make and model, 518 as pilot in command, 91 in the last 90 days, 57 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 11 knots, gusting 16
- Visibility: 10 statute miles
- Lowest ceiling: 3,700 ft overcast
- Temperature: 46 °F, dew point 43 °F
- Altimeter: 30.03 inHg
- Observed at: PANI, 35 nm away
- METAR: PANI 260956Z AUTO 23011G16KT 10SM -RA FEW008 OVC037 08/06 A3003 RMK AO2 RAB10 SLP161 P0008 T00780061 $

## Docket (2 files)

The files NTSB released with the investigation on November 7, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=105597. 4.2 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 4.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14258599&FileExtension=pdf&FileName=6120%20dms_Redacted-Rel.pdf
- Photo (item 2, PDF, 1 page, 86 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14582266&FileExtension=pdf&FileName=Photo%20Array-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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