Fog

NTSB finding · Environmental issues › Conditions/weather/phenomena › Ceiling/visibility/precip

Cases
78
In the probable cause
42 (54%)
Fatal cases
51
NTSB code
03035055

NTSB has coded findings and defining events since 2008. Earlier cases used its older occurrence and cause codes, so they aren’t counted here.

When and where

In green, cases where NTSB made it part of the probable cause; in gray, a factor or other finding. Findings are coded with the final report, often a year or more after the event, so the latest years are incomplete.

Cases per year

2008In the probable causeFactor only2026
Cases with Fog per year: 78 cases
200811
20097
20106
20116
20129
20139
20143
20152
20163
20175
20181
20194
20203
20214
20233
20242
Query with SQL
duckdb -csv -c "SELECT year(c.\"eventDate\") AS year, count(DISTINCT f.case_mkey) AS cases,
    count(DISTINCT f.case_mkey) FILTER (WHERE f.\"inProbableCause\") AS in_probable_cause
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = f.case_mkey
  WHERE starts_with(f.\"findingCode\", '03035055') AND c.\"eventDate\" >= DATE '2000-01-01'
  GROUP BY 1
  ORDER BY 1"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

In the same cases

Query with SQL
duckdb -csv -c "WITH matched AS (SELECT DISTINCT case_mkey, aircrafts_position FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' WHERE starts_with(\"findingCode\", '03035055'))
  SELECT * FROM (
  SELECT 'Defining event' AS kind, e.\"tier2Number\" AS code, max(e.\"eventTier2Name\") AS name, count(DISTINCT f.case_mkey) AS cases
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_events.parquet' e ON e.case_mkey = f.case_mkey AND e.aircrafts_position = f.aircrafts_position AND e.\"isDefiningEvent\"
  WHERE e.\"tier2Number\" <> ''
  GROUP BY ALL
  UNION ALL
  SELECT 'Aircraft model', a.aircraft_model_code, any_value(concat_ws(' ', m.manufacturer, m.model)), count(DISTINCT f.case_mkey)
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = f.case_mkey AND a.position = f.aircrafts_position
  LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m ON m.code = a.aircraft_model_code
  WHERE a.aircraft_model_code IS NOT NULL
  GROUP BY ALL
  UNION ALL
  SELECT 'Other finding', left(g.\"findingCode\", 8), max(g.\"tier4Name\"), count(DISTINCT g.case_mkey)
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' g
  WHERE g.case_mkey IN (SELECT case_mkey FROM matched) AND NOT starts_with(g.\"findingCode\", '03035055') AND g.\"findingCode\" GLOB '[0-9][0-9]*'
  GROUP BY ALL
  )
  QUALIFY row_number() OVER (PARTITION BY kind ORDER BY cases DESC) <= 10
  ORDER BY kind, cases DESC"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Newest cases · 78

NTSB CEN24FA243Accident · 2 fatalClass 3 · FieldFinal reportWaco YKC · Selden, KSThe pilot's inadvertent visual flight into instrument meteorological conditions, which had not been forecast at the time of departure, and which resulted in a loss of control due to spatial disorientation.Jun 30, 2024 · N14137 · Substantial damageNTSB CEN24LA104Accident · No injuriesClass 3 · LimitedFinal reportPiper PA24 · Cherokee, OKA partial loss of engine power for reasons that could not be determined. Contributing to the accident was the presence of ground fog, which hindered the landing approach and resulted in the pilot inadvertently landing long and impacting a fence during the…Feb 2, 2024 · N4284 · Substantial damageNTSB WPR23FA257Accident · 6 fatalClass 3 · FieldFinal reportCessna 550 · Murrieta, CAThe flight crew’s decision to descend below the decision altitude of an instrument approach without having the appropriate runway visual reference(s) distinctively identified and with the visibility below the minimum that was prescribed for the approach,…Jul 8, 2023 · N819KR · DestroyedNTSB CEN23FA125Accident · 2 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 · Port O'Connor, TXThe pilot’s initiation of the visual flight into instrument meteorological conditions, which resulted in spatial disorientation and a subsequent loss of helicopter control. Contributing to the accident was the pilot’s flicker vertigo during the flight.Mar 7, 2023 · N494SH · DestroyedNTSB CEN23FA084Accident · 4 fatalClass 3 · FieldFinal reportPiper PA46 · Yoakum, TXThe pilot’s spatial disorientation during a missed approach in instrument meteorological conditions, which led to an exceedance of the airplane’s critical angle of attack and a subsequent aerodynamic stall.Jan 17, 2023 · N963MA · Substantial damageNTSB ERA22FA098Accident · 4 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 II · Bronson, FLA loss of control due to spatial disorientation as a result of the noninstrument-rated pilot’s improper decision to attempt a visual flight rules flight at night into an area of known reduced visibility due to fog.Dec 31, 2021 · N442VB · DestroyedNTSB WPR22LA032Accident · No injuriesClass 4 · LimitedFinal reportBell OH-58A · Holtville, CAThe pilot’s failure to maintain helicopter control after becoming spatially disoriented when the helicopter entered low-level haze/fog.Nov 9, 2021 · N902SF · Substantial damageNTSB ERA22FA014Accident · 1 fatalClass 3 · FieldFinal reportPiper PA-24-260 · Blairsville, GAThe pilot’s decision to commence the flight in low IFR weather conditions, and making immediate turns after takeoff in IMC, resulting in spatial disorientation and a loss of airplane control.Oct 13, 2021 · N9126P · DestroyedNTSB ERA22LA007Accident · No injuriesClass 4 · LimitedFinal reportBell Helicopter Textron Canada 429 · Batavia, NYThe pilot’s failure to disengage the autopilot prior to climbing out of a fog bank.Oct 7, 2021 · N505TJ · Substantial damageNTSB CEN21LA111Accident · No injuriesClass 4 · LimitedFinal reportCessna T182T · Hollister, MOThe pilot’s failure to maintain proper airspeed control during an instrument approach in instrument meteorological conditions, which led to a bounced landing, collapsing the nose landing gear, and resulting in substantial damage.Nov 26, 2020 · N182PP · Substantial damage
See all 78 cases
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
  WHERE c.\"mKey\" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f.\"findingCode\", '03035055'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.