# NTSB investigations: Lycoming IO-360-L2A, CO

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 CEN26LA133](https://openairdocs.org/ntsb/CEN26LA133.md): Cessna 172S · Denver, CO · Accident · No injuries · Class 4 · Limited · Final report · Feb 28, 2026 · N1071Z · Substantial damage
  > The solo student pilot's improper landing flare and subsequent improper recovery from a bounced landing which resulted in substantial damage to the airplane.
- [NTSB CEN25LA088](https://openairdocs.org/ntsb/CEN25LA088.md): Cessna 172S · Air Force Academy, CO · Accident · No injuries · Class 4 · Limited · Final report · Jan 27, 2025 · N51387 · Substantial damage
  > The pilot’s failure to maintain airplane control during final approach after encountering an unexpected windshear.
- [NTSB CEN24LA350](https://openairdocs.org/ntsb/CEN24LA350.md): Cessna 172 · Englewood, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 11, 2024 · N20747 · Substantial damage
  > A partial loss of engine power due to fuel-oil contamination of the fuel injection servo.
- [NTSB CEN24LA036](https://openairdocs.org/ntsb/CEN24LA036.md): Textron 172S · Erie, CO · Accident · No injuries · Class 3 · Limited · Final report · Nov 9, 2023 · N1817E · Substantial damage
  > A partial loss of engine power while maneuvering at a low altitude due to a stuck exhaust valve.
- [NTSB CEN23LA394](https://openairdocs.org/ntsb/CEN23LA394.md): Textron 172S · Englewood, CO · Accident · Minor injuries · Class 4 · Limited · Final report · Sep 2, 2023 · N20818 · Substantial damage
  > An in-flight collision with multiple geese during initial climb.
- [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 CEN23LA102](https://openairdocs.org/ntsb/CEN23LA102.md): Cessna 172S · Limon, CO · Accident · No injuries · Class 4 · Limited · Final report · Feb 1, 2023 · N5163H · Substantial damage
  > The pilot’s failure to maintain directional control during the takeoff roll.
- [NTSB CEN22FA424](https://openairdocs.org/ntsb/CEN22FA424.md): Cessna 172S · Longmont, CO · Accident · 3 fatal · Class 3 · Field · Final report · Sep 17, 2022 · N2117Y · 2 aircraft · Destroyed
  > The pilots’ inability to see and avoid each other, resulting in a midair collision.
- [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 CEN21LA160](https://openairdocs.org/ntsb/CEN21LA160.md): Cessna 172 · Watkins, CO · Accident · No injuries · Class 4 · Limited · Final report · Mar 17, 2021 · N786CP · Substantial damage
  > The pilot’s failure to maintain directional control during takeoff and the instructor pilot’s inadequate supervision of the pilot’s takeoff.
- [NTSB CEN20CA128](https://openairdocs.org/ntsb/CEN20CA128.md): Cessna 172 · Denver, CO · Accident · No injuries · Data collection · Final report · Mar 18, 2020 · N1132W · Substantial damage
  > The pilot's incorrect right rudder application during a touch-and go-landing, which resulted in a loss of directional control, runway excursion, and a collision with a runway sign.
- [NTSB CEN20CA094](https://openairdocs.org/ntsb/CEN20CA094.md): Cessna 172 · Boulder, CO · Accident · No injuries · Data collection · Final report · Feb 20, 2020 · N370SP · Substantial damage
  > The pilot's loss of directional control during the landing roll on the slush-covered runway.
- [NTSB CEN17FA111](https://openairdocs.org/ntsb/CEN17FA111.md): Cessna 172S · Berthoud, CO · Accident · 2 fatal · Field investigation · Final report · Feb 27, 2017 · N2461N · Substantial damage
  > The failure of the pilots to apply prompt and/or correct flight control inputs to adequately recover from the intentional aerodynamic spin.
- [NTSB GAA17CA060](https://openairdocs.org/ntsb/GAA17CA060.md): Cessna 172 · Englewood, CO · Accident · No injuries · Data collection · Final report · Nov 7, 2016 · N6026Z · Substantial damage
  > An in-flight collision with multiple birds.
- [NTSB CEN12LA414](https://openairdocs.org/ntsb/CEN12LA414.md): Cessna 172S · Glenwood Springs, CO · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 2012 · N917SA · Substantial damage
  > The pilot's decision to fly into a mountainous area where conditions were such that the airplane was unable to climb above rising terrain. Contributing to the accident was the pilot's insufficient pilot-in-command experience and inadequate training in…
- [NTSB CEN12FA199](https://openairdocs.org/ntsb/CEN12FA199.md): Cessna 172S · Longmont, CO · Accident · 2 fatal · Field investigation · Final report · Mar 23, 2012 · N10468 · 2 aircraft · Substantial damage
  > The inadequate visual lookout by the pilots of both airplanes, which resulted in a mid-air collision.
- [NTSB CEN11CA392](https://openairdocs.org/ntsb/CEN11CA392.md): Cessna 172S · Cortez, CO · Accident · No injuries · Data collection · Final report · Jun 14, 2011 · N6017J · Substantial damage
  > The pilot's failure to maintain aircraft control while landing in gusty crosswind conditions.
- [NTSB CEN10LA563](https://openairdocs.org/ntsb/CEN10LA563.md): Cessna 172S · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Sep 22, 2010 · N2459K · Substantial damage
  > The pilot's inadequate landing flare and improper recovery from a bounced landing.
- [NTSB CEN09CA530](https://openairdocs.org/ntsb/CEN09CA530.md): Cessna 172 · Centennial, CO · Accident · No injuries · Data collection · Final report · Aug 16, 2009 · N22265 · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during the landing flare in crosswind conditions.
- [NTSB DEN07CA154](https://openairdocs.org/ntsb/DEN07CA154.md): Cessna 172R · Fort Collins, CO · Accident · No injuries · Data collection · Final report · Aug 13, 2007 · N249FS · Substantial damage
  > The student pilot's improper flare and recovery from a bounced landing.
- [NTSB DEN04CA137](https://openairdocs.org/ntsb/DEN04CA137.md): Cessna 172S · Erie, CO · Accident · No injuries · Data collection · Final report · Aug 29, 2004 · N2099J · Substantial damage
  > the pilot's failure to maintain aircraft control resulting in a hard landing. Factors contributing to the accident were the pilot induced oscillation and the high approach airspeed.
- [NTSB DEN04LA053](https://openairdocs.org/ntsb/DEN04LA053.md): Cessna C172 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Mar 26, 2004 · N5345G · 2 aircraft · Substantial damage
  > the pilot of the Maule's failure to maintain a visual lookout.

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41597'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41597&state=CO

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