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Climb rate

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NTSB finding · Aircraft › Aircraft oper/perf/capability › Performance/control parameters

All 265 cases239 in the probable cause
Cases
265
In the probable cause
239 (90%)
Fatal cases
44
NTSB code
01062035

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

Where

Open the map
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\", '01062035') 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

Defining events
Aircraft models

Aircraft matched to the registry by N-number and date.

Other findings
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\", '01062035'))
  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\", '01062035') 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 · 265

NTSB CEN26LA201Accident · Serious injuriesClass 4 · LimitedFinal reportCessna 172H · Berryville, ARThe pilot in command’s decision to continue the takeoff when the airplane was not airborne at midfield, and the student pilot’s likely improper technique that resulted in a lack of sufficient climb performance and subsequent loss of control.May 25, 2026 · N2632L · Substantial damageNTSB WPR26LA087Accident · Serious injuriesClass 4 · LimitedFinal reportKitfox Series 7 · Lemmon Valley-Golden Valley, NVThe pilot’s inability to maintain clearance from terrain during a go-around.Jan 19, 2026 · N775DZ · Substantial damageNTSB WPR25LA308Accident · Serious injuriesClass 4 · LimitedFinal reportThomas Graham Teenie Two · Chehalis, WAThe pilot's improper decision to take off with the airplane over its maximum allowable gross weight, which degraded its climb performance and led to a subsequent off airport landing.Sep 11, 2025 · N311TS · Substantial damageNTSB WPR25LA271Accident · Minor injuriesClass 4 · LimitedFinal reportNaval Aircraft Factory N3N-3 · Red Lodge, MTThe pilot’s failure to maintain clearance from obstacles during an aborted landing. Contributing to the accident was the high density altitude weather condition.Aug 31, 2025 · N45254 · Substantial damageNTSB ANC25LA100Accident · No injuriesClass 4 · LimitedFinal reportChampion 7GCBC · Sutton, AKThe airplane’s encounter with a downdraft while maneuvering at low altitude, which resulted in a forced landing and collision with terrain.Aug 31, 2025 · N5267X · Substantial damageNTSB ANC25LA088Accident · No injuriesClass 4 · LimitedFinal reportCessna 180G · Delta Junction, AKThe pilot’s failure to maintain a rate of climb sufficient to clear obstacles during takeoff, resulting in a collision with tree-covered terrain.Aug 19, 2025 · N4721U · Substantial damageNTSB WPR25LA234Accident · Serious injuriesClass 4 · LimitedFinal reportCessna 182Q · Cashmere, WAThe pilot’s failure to maintain clearance from obstacles during an aborted landing, while flying in tailwind conditions. Contributing to the accident was the high density altitude weather condition.Jul 31, 2025 · N759NB · Substantial damageNTSB CEN25LA283Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-301 · Hartsburg, ILThe pilot’s failure to maintain control of the airplane during takeoff with a tailwind from a wet turf airstrip.Jul 23, 2025 · N2371V · Substantial damageNTSB CEN25LA267Accident · Minor injuriesClass 4 · LimitedFinal reportAir Tractor AT-402B · Wyoming, ILThe pilot’s failure to attain a positive climb rate due to airplane’s improper takeoff configuration.Jul 15, 2025 · N647RA · Substantial damageNTSB CEN25LA251Accident · Minor injuriesClass 4 · LimitedFinal reportScott Vincin Just Acft Highlander · Mancos, COThe airplane’s reduced climb performance during takeoff in mountainous terrain, which resulted in the airplane’s inability to climb and impact with terrain.Jul 13, 2025 · N970SV · Substantial damage
See all 265 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\", '01062035'))
  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.