# Wet/muddy terrain - Type: NTSB finding subsection - Path: [Environmental issues](https://openairdocs.org/ntsb-findings/03) › [Physical environment](https://openairdocs.org/ntsb-findings/0302) › [Terrain](https://openairdocs.org/ntsb-findings/030210) › Wet/muddy terrain - NTSB code: 03021035 - Cases: 110 - In the probable cause: 33 - Fatal cases: 2 - All cases: https://openairdocs.org/ntsb-findings/03021035/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/03021035/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/03021035 ## Cases per year (in the probable cause / all) - 2008: 6 / 12 - 2009: 0 / 5 - 2010: 1 / 8 - 2011: 0 / 8 - 2012: 1 / 5 - 2013: 0 / 1 - 2014: 1 / 7 - 2015: 1 / 9 - 2016: 4 / 13 - 2017: 1 / 10 - 2018: 1 / 7 - 2019: 8 / 9 - 2020: 4 / 4 - 2021: 1 / 3 - 2022: 0 / 2 - 2023: 1 / 3 - 2024: 0 / 1 - 2025: 1 / 1 - 2026: 2 / 2 ## Defining events in these cases - [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 28 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 14 cases - [Nose over/nose down](https://openairdocs.org/ntsb-events/096): 12 cases - [Fuel exhaustion](https://openairdocs.org/ntsb-events/192): 8 cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 6 cases - [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 5 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 5 cases - [Abnormal runway contact](https://openairdocs.org/ntsb-events/090): 5 cases - [Runway excursion](https://openairdocs.org/ntsb-events/300): 4 cases - [Fuel contamination](https://openairdocs.org/ntsb-events/193): 4 cases ## Aircraft models (registry) - [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b): 4 cases - [Cessna 152](https://openairdocs.org/model/cessna-152): 4 cases - [Robinson Helicopter R66](https://openairdocs.org/model/robinson-helicopter-r66): 2 cases - [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 2 cases - [Robinson Helicopter R44](https://openairdocs.org/model/robinson-helicopter-r44): 2 cases - [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140): 2 cases - [Piper J3C-65](https://openairdocs.org/model/piper-j3c-65): 2 cases - [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a): 2 cases - [Cessna 182H](https://openairdocs.org/model/cessna-182h): 2 cases - [Cessna 172H](https://openairdocs.org/model/cessna-172h): 2 cases ## Other findings in the same cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 37 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 23 cases - [Directional control](https://openairdocs.org/ntsb-findings/01062020) (Aircraft): 23 cases - [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 14 cases - [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 10 cases - [Conducive to carburetor icing](https://openairdocs.org/ntsb-findings/03031030) (Environmental issues): 8 cases - [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 7 cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 5 cases - [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 5 cases - [Fuel planning](https://openairdocs.org/ntsb-findings/02061030) (Personnel issues): 5 cases ## Newest cases - [NTSB CEN26LA194](https://openairdocs.org/ntsb/CEN26LA194), May 20, 2026: Lockwood AIR CAM (N32F), Hutchinson, KS, substantial damage. Probable cause: The pilot’s inadequate fuel planning, which resulted in a total loss of engine power due to fuel exhaustion. - [NTSB CEN26LA119](https://openairdocs.org/ntsb/CEN26LA119), Feb 19, 2026: Robinson Helicopter R66 (N940BH), Graford, TX, substantial damage. Probable cause: The pilot’s failure to maintain sufficient rotor speed during a practice autorotation to soft terrain which resulted in a loss of control and roll over. - [NTSB CEN25LA112](https://openairdocs.org/ntsb/CEN25LA112), Mar 7, 2025: Cessna 172L (N7550G), Romeo, MI, substantial damage. Probable cause: The pilot's failure to maintain directional control during the landing roll. Contributing to the accident was the soft, wet grass. - [NTSB CEN24LA313](https://openairdocs.org/ntsb/CEN24LA313), Aug 9, 2024: Grumman G164 (N6569), Dyess, AR, substantial damage. Probable cause: The improper overhaul of the carburetor and the malfunction of left magneto which resulted in a partial loss of engine power. - [NTSB CEN24LA027](https://openairdocs.org/ntsb/CEN24LA027), Oct 26, 2023: Robinson Helicopter R44 (N141CD), Rowlett, TX, substantial damage. Probable cause: A malfunction of the helicopter’s Engine Monitoring Unit (EMU)/Governor Controller for undetermined reasons. Contributing to the accident was the flight instructor’s failure to turn off the… - [NTSB WPR23LA151](https://openairdocs.org/ntsb/WPR23LA151), Apr 5, 2023: Lowe Bruce Skystr Ktfx IV-1200 (N1641E), Susanville, CA, substantial damage. Probable cause: The pilot’s braking technique during an off airport precautionary landing on unforeseen soft terrain, which resulted in a nose over. - [NTSB CEN23LA100](https://openairdocs.org/ntsb/CEN23LA100), Feb 5, 2023: Cessna 152 (N5442B), Denton, TX, substantial damage. Probable cause: The student pilot’s failure to maintain directional control during a touch-and-go landing. - [NTSB ANC22LA042](https://openairdocs.org/ntsb/ANC22LA042), Jun 8, 2022: Short Bros. & Harland SC7 (N731E), Chisana, AK, substantial damage. Probable cause: The pilot’s selection of an unsuitable landing site, which resulted in the nosewheel collapsing. - [NTSB WPR22LA178](https://openairdocs.org/ntsb/WPR22LA178), May 14, 2022: Cessna 140 (N76190), Estancia, NM, substantial damage. Probable cause: The pilot’s decision to land on an unsuitable surface which resulted in his loss of aircraft control. - [NTSB WPR22LA009](https://openairdocs.org/ntsb/WPR22LA009), Oct 7, 2021: Piper PA-28-140 (N98241), Albany, OR, substantial damage. Probable cause: The pilot's failure to maintain directional control during takeoff. NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted. Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1). NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names. --- 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.