# Conditions/weather/phenomena - Type: NTSB finding subcategory - Path: [Environmental issues](https://openairdocs.org/ntsb-findings/03) › Conditions/weather/phenomena - NTSB code: 0303 - Cases: 5625 - In the probable cause: 3312 - Fatal cases: 1186 - All cases: https://openairdocs.org/ntsb-findings/0303/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/0303/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/0303 ## Cases per year (in the probable cause / all) - 2008: 372 / 443 - 2009: 178 / 356 - 2010: 154 / 336 - 2011: 130 / 361 - 2012: 177 / 348 - 2013: 150 / 284 - 2014: 152 / 327 - 2015: 178 / 303 - 2016: 179 / 345 - 2017: 149 / 350 - 2018: 176 / 321 - 2019: 211 / 294 - 2020: 185 / 243 - 2021: 156 / 271 - 2022: 159 / 248 - 2023: 192 / 267 - 2024: 205 / 271 - 2025: 148 / 188 - 2026: 61 / 69 ## Sections - [Wind](https://openairdocs.org/ntsb-findings/030340): 3,020 cases, 1,548 in the probable cause - [Temp/humidity/pressure](https://openairdocs.org/ntsb-findings/030310): 907 cases, 663 in the probable cause - [Ceiling/visibility/precip](https://openairdocs.org/ntsb-findings/030350): 828 cases, 523 in the probable cause - [Light condition](https://openairdocs.org/ntsb-findings/030360): 671 cases, 340 in the probable cause - [Turbulence](https://openairdocs.org/ntsb-findings/030320): 430 cases, 333 in the probable cause - [Convective weather](https://openairdocs.org/ntsb-findings/030330): 122 cases, 98 in the probable cause - [Conditions/weather/phenomena, general](https://openairdocs.org/ntsb-findings/030300): 57 cases, 31 in the probable cause ## Defining events in these cases - [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 1,244 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 1,094 cases - [Controlled flight into terr/obj (CFIT)](https://openairdocs.org/ntsb-events/120): 297 cases - [Hard landing](https://openairdocs.org/ntsb-events/092): 282 cases - [Turbulence encounter](https://openairdocs.org/ntsb-events/360): 240 cases - [VFR encounter with IMC](https://openairdocs.org/ntsb-events/401): 216 cases - [Collision during takeoff/land](https://openairdocs.org/ntsb-events/490): 208 cases - [Runway excursion](https://openairdocs.org/ntsb-events/300): 165 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 161 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 156 cases ## Aircraft models (registry) - [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150): 102 cases - [Cessna 172S](https://openairdocs.org/model/cessna-172s): 78 cases - [Cessna 172N](https://openairdocs.org/model/cessna-172n): 78 cases - [Cessna 172M](https://openairdocs.org/model/cessna-172m): 74 cases - [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140): 71 cases - [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 65 cases - [Robinson Helicopter R44 II](https://openairdocs.org/model/robinson-helicopter-r44-ii): 59 cases - [Cessna 152](https://openairdocs.org/model/cessna-152): 49 cases - [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 48 cases - [Cessna 170B](https://openairdocs.org/model/cessna-170b): 44 cases ## Other findings in the same cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 2,898 cases - [Directional control](https://openairdocs.org/ntsb-findings/01062020) (Aircraft): 1,355 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1,161 cases - [Altitude](https://openairdocs.org/ntsb-findings/01062012) (Aircraft): 461 cases - [Performance/control parameters, general](https://openairdocs.org/ntsb-findings/01062000) (Aircraft): 449 cases - [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 353 cases - [Spatial disorientation](https://openairdocs.org/ntsb-findings/02022025) (Personnel issues): 300 cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 245 cases - [Tree(s)](https://openairdocs.org/ntsb-findings/03022020) (Environmental issues): 242 cases - [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 222 cases ## Newest cases - [NTSB CEN26LA315](https://openairdocs.org/ntsb/CEN26LA315), Sep 10, 2026: Progressive Aerodyne Searey (N80515), DeQuincy, LA, substantial damage. Probable cause: The pilot’s failure to maintain directional control during takeoff after encountering a wind gust. Contributing to the accident was nearby convective activity. - [NTSB CEN26LA307](https://openairdocs.org/ntsb/CEN26LA307), Aug 29, 2026: Cessna Claassen 305A(0-1A) (N41362), Midland, TX, substantial damage. Probable cause: The pilot’s failure to maintain directional control during landing in gusting wind conditions. - [NTSB ERA26LA311](https://openairdocs.org/ntsb/ERA26LA311), Aug 21, 2026: HPH Glasflugel 304CZ (N304BS), Xenia, OH, substantial damage. Probable cause: The glider’s encounter with atmospheric conditions where lift was not sufficient to maintain flight. - [NTSB CEN26LA300](https://openairdocs.org/ntsb/CEN26LA300), Aug 21, 2026: Cessna T206H (N464PM), Marble, CO, substantial damage. Probable cause: The pilot's failure to maintain directional control during the final approach in variable and gusting wind conditions. Contributing to the accident were localized wind effects associated with… - [NTSB CEN26LA297](https://openairdocs.org/ntsb/CEN26LA297), Aug 17, 2026: Aeroprakt Manufacturing SP Zoo A22LS (N22FC), Searcy, AR, substantial damage. Probable cause: The flight instructor’s failure to maintain airplane control during landing in gusting wind conditions. - [NTSB DCA26LA286](https://openairdocs.org/ntsb/DCA26LA286), Jul 16, 2026: Embraer S A ERJ 170-200 LL (N271SY), Sanford, FL, no damage. Probable cause: An encounter with convectively induced turbulence during cruise flight in an area of forecast thunderstorm activity. - [NTSB ERA26LA272](https://openairdocs.org/ntsb/ERA26LA272), Jul 10, 2026: Cessna 170B (N1838C), Hartwell, GA, substantial damage. Probable cause: The pilot’s failure to compensate for the gusty and variable wind conditions, which resulted in a loss of control and collision with trees during takeoff. - [NTSB ERA26LA259](https://openairdocs.org/ntsb/ERA26LA259), Jul 6, 2026: Maule M-5-235C (N9103E), Hickman, KY, substantial damage. Probable cause: The pilot’s failure to maintain a proper glide path, which resulted in a runway undershoot. - [NTSB WPR26LA248](https://openairdocs.org/ntsb/WPR26LA248), Jul 3, 2026: Dean J Irvin KFA Safari XL (N927MD), Saratoga, WY, substantial damage. Probable cause: The pilot’s failure to maintain directional control during the landing roll in gusting wind conditions. - [NTSB WPR26LA238](https://openairdocs.org/ntsb/WPR26LA238), Jun 27, 2026: Cessna A185F (N151PB), Angel Fire, NM, substantial damage. Probable cause: The pilot’s loss of directional control during landing with a crosswind. 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.