# NTSB investigations: Performance calculations

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 1 of 3 · 115 cases

## Latest cases

- [NTSB WPR26LA267](https://openairdocs.org/ntsb/WPR26LA267.md): Rans S7 · Kemmerer, WY · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 18, 2026 · N6133M · Substantial damage
  > The pilot’s decision to perform a take-off in high-density-altitude, gusting-crosswind conditions, which resulted in an aerodynamic stall, hard landing and subsequent nose-over.
- [NTSB WPR25LA308](https://openairdocs.org/ntsb/WPR25LA308.md): Thomas Graham Teenie Two · Chehalis, WA · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 11, 2025 · N311TS · Substantial damage
  > The 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.
- [NTSB ANC25LA095](https://openairdocs.org/ntsb/ANC25LA095.md): Helio H-395 · Pilot Point, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 21, 2025 · N44344 · Substantial damage
  > The pilot's inadequate takeoff performance planning, which resulted in a runway excursion and collision with terrain.
- [NTSB CEN25LA231](https://openairdocs.org/ntsb/CEN25LA231.md): Grumman Acft ENG Cor-Schweizer G-164B · Lockport, LA · Accident · No injuries · Class 3 · Limited · Final report · Jul 1, 2025 · N8834H · Substantial damage
  > The pilot’s inadequate planning for the high density altitude conditions which resulted in reduced airplane performance, climb capability, and subsequent forced landing.
- [NTSB ERA25LA212](https://openairdocs.org/ntsb/ERA25LA212.md): Air Tractor AT-602 · Fremont, OH · Accident · No injuries · Class 4 · Limited · Final report · May 25, 2025 · N260LA · Substantial damage
  > The pilot’s inadequate takeoff performance planning, which resulted in a runway overrun and collision with terrain.
- [NTSB WPR25LA034](https://openairdocs.org/ntsb/WPR25LA034.md): Robinson Helicopter R44 II · Durkee, OR · Accident · No injuries · Class 3 · Limited · Final report · Nov 7, 2024 · N4361R · Substantial damage
  > The pilot's inadequate performance planning, which resulted in insufficient engine power to transition into an out-of-ground-effect hover at a high gross weight.
- [NTSB ANC24LA098](https://openairdocs.org/ntsb/ANC24LA098.md): Piper PA-18-150 · Fairbanks, AK · Accident · No injuries · Class 4 · Limited · Final report · Sep 15, 2024 · N4242Z · Substantial damage
  > The pilot’s failure to maintain a rate of climb sufficient to clear obstacles during takeoff, resulting in a collision with obstacles and a subsequent aerodynamic stall.
- [NTSB ERA24LA197](https://openairdocs.org/ntsb/ERA24LA197.md): Beech F35 · McAlpin, FL · Accident · No injuries · Class 4 · Limited · Final report · Apr 27, 2024 · N3880B · Destroyed
  > The pilot’s inadequate preflight planning and failure to abort the takeoff at the predetermined decision point.
- [NTSB OPS24LA011](https://openairdocs.org/ntsb/OPS24LA011.md): Diamond Aircraft Ind DA20-C1 · North Las Vegas, NV · Incident · No injuries · Class 4 · Limited · Final report · Dec 9, 2023 · N857PA · 2 aircraft · No damage
  > The local controller’s loss of situational awareness, inadequate provision of traffic advisory or safety alert information, and lack of positive control, that resulted in a near-midair collision.
- [NTSB WPR24FA035](https://openairdocs.org/ntsb/WPR24FA035.md): Cessna 172G · Provo, UT · Accident · 2 fatal · Class 3 · Field · Final report · Nov 14, 2023 · N3971L · Substantial damage
  > The pilot's exceedance of the airplane's critical angle of attack during a chandelle maneuver, which resulted in an aerodynamic stall and descent into trees and terrain. Contributing to the accident was the pilot’s decision to maneuver into a canyon and…
- [NTSB WPR24LA022](https://openairdocs.org/ntsb/WPR24LA022.md): Cessna 172N · Bandera, WA · Accident · No injuries · Class 4 · Limited · Final report · Oct 18, 2023 · N734LJ · Substantial damage
  > The pilot’s decision to land at a closed water-soaked grass runway, which resulted in a runway excursion.
- [NTSB WPR24FA014](https://openairdocs.org/ntsb/WPR24FA014.md): Piper PA-28-140 · Williams, AZ · Accident · 3 fatal · Class 3 · Field · Final report · Oct 17, 2023 · N6192J · Substantial damage
  > The pilot’s failure to maintain sufficient airspeed and exceedance of the airplane’s critical angle of attack during initial climb after takeoff, resulting in an aerodynamic stall. Contributing was the pilot’s inadequate preflight airplane performance…
- [NTSB ERA24FA001](https://openairdocs.org/ntsb/ERA24FA001.md): Cessna 177RG · Lake Placid, NY · Accident · 2 fatal · Class 3 · Field · Final report · Oct 1, 2023 · N545PZ · Substantial damage
  > A partial loss of engine power for undetermined reasons. Contributing to the accident was the pilot’s inadequate preflight weight and balance planning and his aggressive low altitude maneuvering, which resulted in an aerodynamic stall and loss of control.
- [NTSB WPR23LA338](https://openairdocs.org/ntsb/WPR23LA338.md): Bell 212 · Balch Camp, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 10, 2023 · N873HL · Destroyed
  > The pilot’s inadequate performance planning for the operation that resulted in an excessive gross weight for the operating conditions, leading to a loss of altitude during maneuvering and contact with trees. Contributing to the accident was the pilot’s…
- [NTSB WPR23LA334](https://openairdocs.org/ntsb/WPR23LA334.md): Piper PA-28-140 · Prescott, AZ · Accident · No injuries · Class 3 · Limited · Final report · Sep 2, 2023 · N6834W · Substantial damage
  > The pilot-in-command’s inadequate preflight planning for the high density altitude and relative humidity conditions and his failure to recognize the need to reject the takeoff, allowing the student pilot to execute an abnormally long takeoff roll and apply…
- [NTSB WPR23FA296](https://openairdocs.org/ntsb/WPR23FA296.md): Cessna T206H · Yellow Pine, ID · Accident · 1 fatal · Class 3 · Field · Final report · Jul 30, 2023 · N918KG · Substantial damage
  > The pilot’s decision to perform a go-around into rising mountainous terrain. Contributing to the accident was the pilot’s failure to follow published airport guidance about go-arounds, and landings and takeoffs with unfavorable winds.
- [NTSB WPR23LA282](https://openairdocs.org/ntsb/WPR23LA282.md): Piper PA-28-140 · Elko, NV · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 20, 2023 · N4149J · Substantial damage
  > The pilot’s failure to ensure adequate airplane performance before taking off from a significantly shorter runway than originally planned for.
- [NTSB ERA23FA235](https://openairdocs.org/ntsb/ERA23FA235.md): Honda HA-420 · Summerville, SC · Accident · No injuries · Class 3 · Field · Final report · May 18, 2023 · N255HJ · Substantial damage
  > The pilot’s improper calculation of the airplane’s landing approach speed and required landing distance, which resulted in the airplane touching down fast with inadequate runway available, and a subsequent runway excursion.
- [NTSB WPR22LA320](https://openairdocs.org/ntsb/WPR22LA320.md): Cessna 152 · Ione, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 26, 2022 · N49430 · Substantial damage
  > The flight instructor’s delayed decision to abort the takeoff, which resulted in impact with a fence and a tree. Contributing to the accident was the instructor’s decision to land at the unfamiliar airstrip without determining whether it was within the…
- [NTSB CEN22LA390](https://openairdocs.org/ntsb/CEN22LA390.md): Aero Commander 100-180 · Pueblo, CO · Accident · No injuries · Class 4 · Limited · Final report · Aug 13, 2022 · N3727X · Substantial damage
  > The flight instructor’s failure to maintain adequate airspeed during the demonstrated soft-field takeoff, which led to the airplane exceeding its critical angle-of-attack and experiencing an aerodynamic stall.
- [NTSB ANC21LA079](https://openairdocs.org/ntsb/ANC21LA079.md): Robinson Helicopter R44 II · Pelican, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 30, 2021 · N878CB · Substantial damage
  > The pilot’s improper preflight planning to ensure adequate power to hover out-of-ground effect while conducting external load operations.
- [NTSB WPR21LA341](https://openairdocs.org/ntsb/WPR21LA341.md): Robinson R44 · Camp Verde, AZ · Accident · No injuries · Class 4 · Limited · Final report · Aug 28, 2021 · N544SH · Substantial damage
  > The pilot's inadequate preflight performance calculations which resulted in an aborted takeoff and collision with trees.
- [NTSB CEN21FA377](https://openairdocs.org/ntsb/CEN21FA377.md): Aeronca 7AC · Fort Worth, TX · Accident · 2 fatal · Class 3 · Field · Final report · Aug 21, 2021 · N1472E · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall. Contributing to the accident was the pilot’s inadequate preflight planning, which resulted in an exceedance of the airplane’s…
- [NTSB WPR21LA319](https://openairdocs.org/ntsb/WPR21LA319.md): Piper PA-28-140 · Panguitch, UT · Accident · No injuries · Class 4 · Limited · Final report · Aug 13, 2021 · N1651J · Substantial damage
  > The airplane’s inability to maintain altitude during the initial climb due to a degradation in the airplane’s performance due to high-density altitude conditions. Contributing to the accident was the pilot’s failure to conduct preflight performance planning…
- [NTSB ERA21LA271](https://openairdocs.org/ntsb/ERA21LA271.md): Cessna 150 · Bentleyville, PA · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 28, 2021 · N22307 · Substantial damage
  > The flight instructor and student pilot’s inadequate preflight performance planning which resulted in a takeoff attempt with insufficient available runway, a loss of control, and impact with terrain.
- [NTSB WPR21LA239](https://openairdocs.org/ntsb/WPR21LA239.md): Mooney M20J · West Glacier, MT · Accident · No injuries · Class 4 · Limited · Final report · Jun 20, 2021 · N5765N · Substantial damage
  > The pilot’s inadequate performance planning and decision to continue the takeoff which, resulted in a runway overrun and collision with terrain.
- [NTSB ERA21LA173](https://openairdocs.org/ntsb/ERA21LA173.md): Piper PA-23-250 · Springfield, TN · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 5, 2021 · N5018Y · Substantial damage
  > The flight instructor’s failure to abort the takeoff following a loss of left engine power due to fuel starvation. Also causal was the inadequate maintenance of the left fuel cap by unknown maintenance personnel, which resulted in a blockage of the fuel…
- [NTSB WPR21LA110](https://openairdocs.org/ntsb/WPR21LA110.md): Dassault FALCON900EX · San Diego, CA · Accident · No injuries · Class 3 · Limited · Final report · Feb 13, 2021 · N823RC · Substantial damage
  > The flight crew’s operation of the airplane outside of the manufacturer’s specified weight and balance limitations and with an improper trim setting, which resulted in the airplane’s inability to rotate during the attempted takeoff. Contributing to the…
- [NTSB CEN21LA029](https://openairdocs.org/ntsb/CEN21LA029.md): Cessna 172 · Geuda Springs, KS · Accident · No injuries · Class 4 · Limited · Final report · Oct 24, 2020 · N5910A · Substantial damage
  > The pilot’s failure to determine the airplane’s takeoff performance from an off-airport field which resulted in an aborted takeoff and impact with a fence and terrain. Contributing to the accident was the delayed aborted takeoff.
- [NTSB CEN21FA007](https://openairdocs.org/ntsb/CEN21FA007.md): Beech S35 · Telluride, CO · Accident · 2 fatal · Class 3 · Field · Final report · Oct 5, 2020 · N4444K · Substantial damage
  > The pilot’s loss of control during the climb to cruise flight resulting in the airplane’s impact with terrain. Contributing to the accident was the pilot’s decision to not climb to a higher altitude before proceeding over high terrain.
- [NTSB ERA20LA288](https://openairdocs.org/ntsb/ERA20LA288.md): Cessna 170 · Ardmore, TN · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 13, 2020 · N3962V · Substantial damage
  > The pilot’s inadequate preflight planning and his decision to depart from a constrained, grass-covered field in elevated-density altitude conditions, which resulted in reduced takeoff and climb performance and a subsequent forced landing.
- [NTSB ERA20LA274](https://openairdocs.org/ntsb/ERA20LA274.md): Piper PA32RT · Honesdale, PA · Accident · No injuries · Class 3 · Limited · Final report · Aug 1, 2020 · N3025L · Substantial damage
  > The pilot’s premature rotation for takeoff, which resulted in a tail strike and subsequent runway excursion. Contributing to the accident was the pilot’s inadequate preflight planning, which failed to accurately determine and account for the effects of…
- [NTSB CEN20LA321](https://openairdocs.org/ntsb/CEN20LA321.md): Piper PA28R · Seiling, OK · Accident · No injuries · Class 3 · Limited · Final report · Aug 1, 2020 · N9765C · Substantial damage
  > The pilot’s incorrect takeoff performance calculations and delayed aborted takeoff, which resulted in a runway excursion and collision with trees.
- [NTSB CEN20CA307](https://openairdocs.org/ntsb/CEN20CA307.md): Vans Vans RV 6 · Imperial, NE · Accident · Serious injuries · Class 4 · Data collection · Final report · Jul 25, 2020 · N327WB · Substantial damage
  > The pilot's inadequate preflight performance planning and his decision not to utilize all available runway during high density altitude operations which led to an inflight loss of control and subsequent collision with terrain.
- [NTSB WPR20CA221](https://openairdocs.org/ntsb/WPR20CA221.md): Quickie Q2 · Preston, ID · Accident · No injuries · Class 4 · Data collection · Final report · Jul 11, 2020 · N85BJ · Substantial damage
  > The pilot's failure to maintain airplane control during takeoff in high density altitude conditions, which resulted in a collision with terrain. Contributing to the accident was the pilot's failure to accomplish performance calculations for the atmospheric…
- [NTSB WPR20CA159](https://openairdocs.org/ntsb/WPR20CA159.md): Grumman G164 · Maxwell, CA · Accident · No injuries · Class 4 · Data collection · Final report · May 29, 2020 · N9716 · Substantial damage
  > The pilot's delayed decision to abort the takeoff when the airplane was not attaining sufficient airspeed for takeoff and subsequently departed the end of the runway and collided with terrain. Contributing to the accident was the pilot's inadequate preflight…
- [NTSB CEN20TA031](https://openairdocs.org/ntsb/CEN20TA031.md): Beech 36 · Spring Branch, TX · Accident · No injuries · Class 3 · Final report · Dec 6, 2019 · N408P · Substantial damage
  > The pilot's inadequate preflight performance planning and his operation of the airplane outside of the manufacturer's specified weight and balance limitations, which resulted in a failure of the airplane to become airborne, an aborted takeoff, and subsequent…
- [NTSB WPR19FA266](https://openairdocs.org/ntsb/WPR19FA266.md): American AA5 · Cowles, NM · Accident · 2 fatal · Class 3 · Field · Final report · Sep 27, 2019 · N9774U · Destroyed
  > The pilot's decision to fly into terrain that exceeded the performance capabilities of the airplane, which resulted in failure to maintain clearance from trees and terrain.
- [NTSB GAA19CA496](https://openairdocs.org/ntsb/GAA19CA496.md): Cessna TU206 · Regina, NM · Accident · No injuries · Data collection · Final report · Aug 19, 2019 · N6588X · Substantial damage
  > The pilot's improper preflight performance planning for a high-density altitude takeoff from a short, dirt airstrip, which resulted in impact with terrain.
- [NTSB WPR19LA223](https://openairdocs.org/ntsb/WPR19LA223.md): Beech 35 · Ruidoso, NM · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 17, 2019 · N5410D · Substantial damage
  > The airplane’s inability to maintain altitude during the initial climb due to a degradation in the airplane’s performance as a result of high-density altitude conditions at the time of takeoff. Contributing to the accident were the pilot’s inadequate…
- [NTSB CEN19LA173](https://openairdocs.org/ntsb/CEN19LA173.md): Just Highlander · Quinlan, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 13, 2019 · N324SB · Substantial damage
  > The pilot's decision to depart with minimal runway available and his improper soft-field takeoff procedure, which resulted in impact with trees due to a slow airspeed and settling effect during climb out.
- [NTSB GAA19CA281](https://openairdocs.org/ntsb/GAA19CA281.md): Cessna 340 · Carvers, NV · Accident · No injuries · Data collection · Final report · May 3, 2019 · N5418M · Substantial damage
  > The pilot’s failure to accurately assess the available runway for the takeoff, which resulted in impact with a gravel berm.
- [NTSB GAA19CA098](https://openairdocs.org/ntsb/GAA19CA098.md): Cessna 170 · Riggins, ID · Accident · No injuries · Data collection · Final report · Dec 16, 2018 · N4385B · Substantial damage
  > The pilot's improper preflight performance planning and his subsequent failure to attain sufficient speed for the airplane to climb with a tailwind.
- [NTSB GAA18CA571](https://openairdocs.org/ntsb/GAA18CA571.md): Eurocopter AS350 · Ruidoso, NM · Accident · No injuries · Data collection · Final report · Sep 29, 2018 · N894NA · Substantial damage
  > The pilot's failure to maintain the proper descent rate during landing. Contributing to the accident were the pilot’s failure to conduct preflight performance calculations, which resulted in his operating the helicopter in high-density altitude conditions,…
- [NTSB CEN18TA374](https://openairdocs.org/ntsb/CEN18TA374.md): Beech 35 · Harrisville, MI · Accident · Minor injuries · Final report · Sep 1, 2018 · N5321E · Substantial damage
  > The pilot’s delayed decision to abort the takeoff, which resulted in the loss of lateral control of the airplane and collision with trees at the end of the runway. Contributing to the accident was the pilot’s decision to depart with a center of gravity…
- [NTSB ERA18LA158](https://openairdocs.org/ntsb/ERA18LA158.md): Bellanca 7ECA · Warsaw, KY · Accident · No injuries · Class 3 · Limited · Final report · Jun 3, 2018 · N8698 · Substantial damage
  > The pilot’s inadequate preflight performance planning, and his delayed decision to abort the takeoff, which resulted in a ground loop.
- [NTSB ERA17LA311](https://openairdocs.org/ntsb/ERA17LA311.md): Piper PA32R · Merritt Island, FL · Accident · No injuries · Limited investigation · Final report · Sep 3, 2017 · N544DG · Substantial damage
  > The pilot's inadequate preflight planning and improper takeoff technique, which resulted in an exceedance of the airplane's critical angle of attack and an aerodynamic stall.
- [NTSB WPR17LA195](https://openairdocs.org/ntsb/WPR17LA195.md): Walker Edgar E Glastar · Cascade, ID · Accident · 1 fatal · Limited investigation · Final report · Sep 2, 2017 · N65EW · Destroyed
  > The pilot's inadequate flight planning, preparation, and navigation, which resulted in the airplane entering a canyon that the pilot was unable to exit by climbing the airplane. Also causal were his in-flight decision-making and his execution of the course…
- [NTSB ERA17LA286](https://openairdocs.org/ntsb/ERA17LA286.md): Air Tractor AT 402A · Shaw, MS · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 21, 2017 · N247LA · Substantial damage
  > The pilot’s decision to attempt takeoff at high gross weight, in high density altitude conditions, and with insufficient runway length. Contributing to the accident was the pilot’s inadequate preflight planning.
- [NTSB WPR17LA183](https://openairdocs.org/ntsb/WPR17LA183.md): Piper PA 28R-200 · West Jordan, UT · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 11, 2017 · N33732 · Substantial damage
  > The pilot's failure to account for operation at high density altitude at or near the airplane’s maximum gross weight, which led to degraded engine performance and prevented the airplane from achieving an adequate airspeed for a positive rate of climb,…

Next page: https://openairdocs.org/ntsb-findings/02061010/cases.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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", '02061010'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/02061010/cases

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