# NTSB investigations, CO: Unknown or undetermined

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.

## Latest cases

- [NTSB CEN27LA005](https://openairdocs.org/ntsb/CEN27LA005.md): Diamond Aircraft Ind DA 40 · Eldorado Springs, CO · Accident · 2 fatal · Class 3 · Limited · Preliminary report · Oct 5, 2026 · N162GL · Destroyed
  > On October 4, 2026, about 2130 mountain daylight time, a Diamond Aircraft DA-40 airplane, N162GL, was destroyed when it was involved in an accident near Eldorado Springs, Colorado. The pilot and passenger were fatally injured. The airplane was operated as a…
- [NTSB ANC26FA097](https://openairdocs.org/ntsb/ANC26FA097.md): Cessna T206H · Dunton, CO · Accident · 2 fatal · Class 3 · Field · Preliminary report · Sep 3, 2026 · N919CW · Destroyed
  > On September 3, 2026, about 1518 mountain daylight time, a Cessna T206H airplane, N919CW, was destroyed when it was involved in an accident near Dunton, Colorado. The pilot and passenger were fatally injured. The flight was operated as a Title 14 Code of…
- [NTSB CEN25FA247](https://openairdocs.org/ntsb/CEN25FA247.md): Zenith CH601 · Pawnee National Grassland, CO · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jul 12, 2025 · N314LB · Destroyed
  > On July 12, 2025, about 1250 mountain daylight time, a Zenith CH601 HDS airplane, N314LB was destroyed when it was involved in an accident in the Pawnee National Grasslands, Colorado. The pilot was fatally injured. The airplane was operated under the…
- [NTSB CEN24LA344](https://openairdocs.org/ntsb/CEN24LA344.md): Bellanca 7GCAA · Rifle, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 8, 2024 · N36008 · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB CEN23FA391](https://openairdocs.org/ntsb/CEN23FA391.md): Schleicher Alexander ASH 26 E · Wellington, CO · Accident · 1 fatal · Class 3 · Field · Final report · Aug 31, 2023 · N50FU · Substantial damage
  > The pilot’s loss of glider control during approach for reasons that could not be determined, which resulted in an aerodynamic stall at an altitude too low for recovery.
- [NTSB CEN23LA049](https://openairdocs.org/ntsb/CEN23LA049.md): Cessna 182A · Durango, CO · Accident · No injuries · Class 3 · Limited · Final report · Nov 24, 2022 · N3886D · Substantial damage
  > A complete loss of engine power for reasons that could not be determined from the available evidence.
- [NTSB CEN22FA376](https://openairdocs.org/ntsb/CEN22FA376.md): Cessna 182Q · Centennial, CO · Accident · 1 fatal · Class 3 · Field · Final report · Aug 9, 2022 · N727PC · Destroyed
  > The loss of engine power during a departure climb for undetermined reasons and the aerodynamic stall, which resulted in an uncontrolled descent and impact with terrain.
- [NTSB WPR22FA256](https://openairdocs.org/ntsb/WPR22FA256.md): Cessna T337G · Gold Hill, CO · Accident · 4 fatal · Class 3 · Field · Final report · Jul 17, 2022 · N337KN · Destroyed
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering with one engine inoperative, which resulted in an aerodynamic stall/spin and impact with terrain.
- [NTSB CEN22LA308](https://openairdocs.org/ntsb/CEN22LA308.md): Vans RV6 · Aurora, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 3, 2022 · N184CB · Substantial damage
  > A total loss of engine power due to foreign object debris blockage of engine air intake. The source of the debris could not be determined based on the available information.
- [NTSB CEN22FA208](https://openairdocs.org/ntsb/CEN22FA208.md): Piper PA-32-260 · Broomfield, CO · Accident · 2 fatal · Class 3 · Field · Final report · May 22, 2022 · N85CT · Substantial damage
  > The pilot’s failure to abort the takeoff due to degraded engine performance. Contributing to the accident was the reduced performance of the engine, the reason for which could not be determined.
- [NTSB CEN22FA197](https://openairdocs.org/ntsb/CEN22FA197.md): Cessna 172 · Broomfield, CO · Accident · 1 fatal · Class 3 · Field · Final report · May 11, 2022 · N73670 · Destroyed
  > The pilot’s failure to maintain control of the airplane for reasons that could not be determined.
- [NTSB CEN22LA137](https://openairdocs.org/ntsb/CEN22LA137.md): Cessna P210N · Englewood, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 8, 2022 · N210GE · Destroyed
  > A total loss of engine power on short final for reasons that could not be determined based on the available evidence.
- [NTSB CEN22LA093](https://openairdocs.org/ntsb/CEN22LA093.md): Zenith CH750 · Montrose, CO · Accident · No injuries · Class 3 · Limited · Final report · Jan 2, 2022 · N750DP · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB CEN21LA414](https://openairdocs.org/ntsb/CEN21LA414.md): Cessna 172S · LaSalle, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 10, 2021 · N2099J · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN21LA404](https://openairdocs.org/ntsb/CEN21LA404.md): Cessna 182 · Delta, CO · Accident · No injuries · Class 3 · Limited · Final report · Sep 3, 2021 · N9114W · Substantial damage
  > A total loss of engine power that resulted in a forced landing and subsequent noseover. The reason for the total loss of engine power could not be determined based on the available evidence.
- [NTSB CEN21LA325](https://openairdocs.org/ntsb/CEN21LA325.md): Beech 35-C33 · Longmont, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 18, 2021 · N18AR · Substantial damage
  > The airplane’s lack of climb performance after takeoff in high density altitude conditions for reasons that could not be determined based on the available evidence.
- [NTSB CEN20LA278](https://openairdocs.org/ntsb/CEN20LA278.md): Grumman G164 · Springfield, CO · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 10, 2020 · N6917K · Destroyed
  > The pilot’s loss of visibility in the cockpit due to foam created by the chemicals loaded in the hopper, which resulted in collision with terrain. Contributing to the accident was the combining of chemicals known to produce foam and the pilot’s failure to…
- [NTSB CEN19LA085](https://openairdocs.org/ntsb/CEN19LA085.md): Tecnam P92 · Englewood, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 21, 2019 · N108TE · Substantial damage
  > The loss of engine power for undetermined reasons, because the airplane wreckage was sold and relocated before the engine could be examined.
- [NTSB CEN18LA335](https://openairdocs.org/ntsb/CEN18LA335.md): Cessna R172E · Colorado Springs, CO · Accident · No injuries · Limited investigation · Final report · Aug 16, 2018 · N146AC · Substantial damage
  > The airplane’s failure to maintain a climb after takeoff, which resulted in a forced landing on unsuitable terrain; the reason for the airplane’s failure to climb could not be determined based on the available evidence.
- [NTSB CEN15FA141](https://openairdocs.org/ntsb/CEN15FA141.md): Richard Lacourse Wheeler Express · Kersey, CO · Accident · 2 fatal · Field investigation · Final report · Feb 11, 2015 · N564ER · Destroyed
  > The pilot's failure to maintain airplane control during an off-airport forced landing following a total loss of engine power for reasons that could not be determined during postaccident examination of the engine. Contributing to the accident was the pilots'…
- [NTSB CEN11CA662](https://openairdocs.org/ntsb/CEN11CA662.md): Piper PA-30 · Saguache, CO · Accident · No injuries · Data collection · Final report · Aug 26, 2011 · N75BA · Substantial damage
  > The pilot's failure to maintain airplane control during the aborted takeoff.
- [NTSB CEN11FA130](https://openairdocs.org/ntsb/CEN11FA130.md): Cessna 210B · Loveland, CO · Accident · 1 fatal · Field investigation · Final report · Dec 27, 2010 · N200EP · Substantial damage
  > The pilot's intentional flight into terrain.
- [NTSB CEN10CA362](https://openairdocs.org/ntsb/CEN10CA362.md): Hiller UH-12E · Grand Junction, CO · Accident · Minor injuries · Data collection · Final report · Jun 25, 2010 · N9754C · Substantial damage
  > The total loss of engine power for undetermined reasons.

## 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."eventStateOrRegion" = 'CO' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '000' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/000/sequence?state=CO

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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.