# NTSB investigations, CO: Preflight or dispatch event

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 CEN26LA165](https://openairdocs.org/ntsb/CEN26LA165.md): Pipistrel Alpha Trainer · Peyton, CO · Accident · No injuries · Class 4 · Limited · Final report · Apr 14, 2026 · N495LP · Substantial damage
  > The pilots’ inadequate preflight fuel planning and improper in-flight fuel management, which resulted in a total loss of engine power due to fuel exhaustion and subsequent forced landing to a field.
- [NTSB CEN25LA403](https://openairdocs.org/ntsb/CEN25LA403.md): Aeronca 11AC · Longmont, CO · Accident · No injuries · Class 4 · Limited · Final report · Sep 29, 2025 · N86326 · Substantial damage
  > The pilot’s inadequate preflight fuel planning, which resulted in a total loss of engine power due to fuel exhaustion and the pilot’s improper landing flare which resulted in a hard landing.
- [NTSB CEN25LA332](https://openairdocs.org/ntsb/CEN25LA332.md): Cessna 172 · Air Force Academy, CO · Accident · No injuries · Class 4 · Limited · Final report · Aug 21, 2025 · N1401E · Substantial damage
  > The student pilot’s failure to perform an adequate preflight inspection.
- [NTSB CEN23LA413](https://openairdocs.org/ntsb/CEN23LA413.md): Powrachute Airwolf · Erie, CO · Incident · 1 fatal · Class 3 · Limited · Final report · Sep 20, 2023 · N820PP · Substantial damage
  > The pilot’s inadvertent manipulation of the throttle, which resulted in the aircraft traveling on the ground and the unsecured pilot being ejected from the aircraft and sustaining fatal injuries.
- [NTSB CEN23LA179](https://openairdocs.org/ntsb/CEN23LA179.md): Textron 172S · Englewood, CO · Accident · No injuries · Class 4 · Limited · Final report · May 6, 2023 · N34BL · Substantial damage
  > The pilot’s decision to adjust his seat during taxi, which resulted in his seat sliding aft, and subsequent loss of directional control.
- [NTSB CEN21FA305](https://openairdocs.org/ntsb/CEN21FA305.md): Hawker Beechcraft G36 · Aspen, CO · Accident · 2 fatal · Class 3 · Field · Final report · Jul 4, 2021 · N36JJ · Destroyed
  > The pilot’s failure to navigate through mountainous terrain, which resulted in controlled flight into terrain.
- [NTSB CEN21FA272](https://openairdocs.org/ntsb/CEN21FA272.md): Antenor Velazco Lancair Evolution · Parker, CO · Accident · 2 fatal · Class 3 · Field · Final report · Jun 16, 2021 · N704AK · Destroyed
  > The pilot’s diversion of attention following an asymmetric flap deployment, which resulted in a descent and collision with powerlines. Contributing to the accident was maintenance personnel’s failure to properly secure the flap control rod attachment bolts,…
- [NTSB CEN15MA290](https://openairdocs.org/ntsb/CEN15MA290.md): Airbus Helicopters AS350B3E · Frisco, CO · Accident · 1 fatal · Class 1 · Major · Final report · Jul 3, 2015 · N390LG · Destroyed
  > Airbus Helicopters' dual-hydraulic AS350 B3e helicopter's (1) preflight hydraulic check, which depleted hydraulic pressure in the tail rotor hydraulic circuit, and (2) lack of salient alerting to the pilot that hydraulic pressure was not restored before…
- [NTSB CEN12LA374](https://openairdocs.org/ntsb/CEN12LA374.md): Yakovlev Yak-52 · Loveland, CO · Accident · No injuries · Limited investigation · Final report · Jun 14, 2012 · N76YK · Substantial damage
  > The pilot’s inadvertent closure of the pneumatic system valve, which resulted in the nose landing gear not fully extending before landing. Contributing to the accident was the pilot's reliance on the mechanical landing gear position indicators instead of the…
- [NTSB CEN10LA204](https://openairdocs.org/ntsb/CEN10LA204.md): Cessna 680 · Eagle, CO · Accident · No injuries · Limited investigation · Final report · Feb 13, 2010 · N606CS · Substantial damage
  > The airplane’s encounter with localized severe to extreme mountain wave turbulence which resulted in substantial damage to both wings.
- [NTSB DEN08FA141](https://openairdocs.org/ntsb/DEN08FA141.md): Cessna 182T · Georgia Pass, CO · Accident · 4 fatal · Field investigation · Final report · Aug 15, 2008 · N487TC · Destroyed
  > The pilot's failure to maintain aircraft control after inadvertantly encountering instrument meteorological conditions. Contributing to the accident were the pilot's failure to obtain a weather brief and the severe weather conditions.

## 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" = '030' 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/030/sequence?state=CO

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