# NTSB investigations: Lycoming IO-320 series, 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 CEN24LA055](https://openairdocs.org/ntsb/CEN24LA055.md): Piper PA-30 · Alamosa, CO · Accident · No injuries · Class 4 · Limited · Final report · Dec 6, 2023 · N7790Y · Substantial damage
  > The pilot’s failure to maintain directional control during landing with an excessive touchdown speed that resulted in a loss of control and impact with terrain.
- [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 DEN06FA107](https://openairdocs.org/ntsb/DEN06FA107.md): American Champion 7KCAB · Winter Park, CO · Accident · 2 fatal · Field investigation · Final report · Jul 30, 2006 · N5232X · Destroyed
  > The pilot's failure to maintain adequate airspeed to avoid a stall while maneuvering at a low altitude in mountainous terrain. Factors associated with the accident are the pilot's performance of a low altitude flight maneuver, an inadvertent stall/spin, and…
- [NTSB DEN06LA041](https://openairdocs.org/ntsb/DEN06LA041.md): Piper PA-30 · Greeley, CO · Accident · Minor injuries · Limited investigation · Final report · Feb 17, 2006 · N7743Y · Substantial damage
  > the pilot's flight into adverse weather conditions, the airframe ice, and the wheels up landing. Factors contributing to the accident were the icing conditions, the frozen landing gear, the frozen alternate gear extension system, and the runway sign.
- [NTSB DEN03LA037](https://openairdocs.org/ntsb/DEN03LA037.md): Rothrock Cozy Mark IV · Erie, CO · Accident · Minor injuries · Limited investigation · Final report · Jan 26, 2003 · N320FR · Destroyed
  > The pilot's failure to maintain aircraft control during landing. Contributing factors were the high crosswinds and the gusts.
- [NTSB DEN03LA011](https://openairdocs.org/ntsb/DEN03LA011.md): Bellanca 7KCAB · Fort Collins, CO · Accident · Minor injuries · Limited investigation · Final report · Oct 22, 2002 · N41807 · Destroyed
  > The pilot's improper recovery from a bounced landing, and his failure to maintain airspeed resulting in a stall.
- [NTSB DEN00LA013](https://openairdocs.org/ntsb/DEN00LA013.md): Bellanca 8KCAB · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Oct 27, 1999 · N8707V · Substantial damage
  > A failure of the left main landing gear attachment (u-bolt) due to fatigue.
- [NTSB FTW98LA312](https://openairdocs.org/ntsb/FTW98LA312.md): Piper PA-30 · Watkins, CO · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1998 · N444BP · Substantial damage
  > The pilot misjudged his altitude. Contributing to the accident were unfavorable wind and dark night conditions.
- [NTSB FTW98LA094](https://openairdocs.org/ntsb/FTW98LA094.md): Champion 7KCAB · Leadville, CO · Accident · No injuries · Limited investigation · Final report · Jan 10, 1998 · N5275X · Substantial damage
  > The failure of the pilot to maintain directional control of the airplane. Factors were a sudden windshift from a headwind to a quartering tailwind, and the snowbank.
- [NTSB FTW97LA368](https://openairdocs.org/ntsb/FTW97LA368.md): Bellanca 7KCAB · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Sep 19, 1997 · N88314 · Substantial damage
  > failure of the right main landing gear due to multiple fatigue cracks.
- [NTSB FTW94LA322](https://openairdocs.org/ntsb/FTW94LA322.md): Bellanca 7KCAB · Frederick, CO · Accident · No injuries · Limited investigation · Final report · Sep 28, 1994 · N53844 · Substantial damage
  > A fatigue failure of the left main landing gear axle.
- [NTSB DEN93LA014](https://openairdocs.org/ntsb/DEN93LA014.md): Champion 7KCAB · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Dec 2, 1992 · N2751G · Substantial damage
  > Undetermined.
- [NTSB DEN92LA019](https://openairdocs.org/ntsb/DEN92LA019.md): Bellanca 7KCAB · Aurora, CO · Accident · No injuries · Limited investigation · Final report · Dec 24, 1991 · N53883 · Substantial damage
  > The pilot failed to maintain control of the aircraft. A factor was: improper supervision by the flight instructor.
- [NTSB DEN91FA126](https://openairdocs.org/ntsb/DEN91FA126.md): Piper PA-30 · Ft. Carson, CO · Accident · 1 fatal · Field investigation · Final report · Sep 11, 1991 · N7730Y · Destroyed
  > The loss of power to both engines due first to fuel starvation followed by fuel exhaustion, the pilot's failure to refuel, and the inadvertent stall. A factor was: the pilot's improper use of powerplant controls.
- [NTSB DEN87LA063](https://openairdocs.org/ntsb/DEN87LA063.md): Champion 7KCAB · Erie, CO · Accident · No injuries · Limited investigation · Final report · Mar 5, 1987 · N2629G · Substantial damage
  > Acft lifted off at slow airspeed and stalled/mushed back to rwy.
- [NTSB DEN86LA024](https://openairdocs.org/ntsb/DEN86LA024.md): Champion 7KCAB · Berthoud, CO · Accident · No injuries · Limited investigation · Final report · Nov 17, 1985 · N1832G · Substantial damage
  > The plt stated that he made 7-9 high speed taxies to pack the snow on the grass strip, aborting mid-strip when flying speed was not attained. On the final run, the plt said the acft again failed to reach flying speed and decided to abort mid-strip. The plt…
- [NTSB DEN84LA227](https://openairdocs.org/ntsb/DEN84LA227.md): Bellanca 8KCAB · Longmont, CO · Accident · Minor injuries · Limited investigation · Final report · Jul 19, 1984 · N57394 · Substantial damage
  > Shortly after lift off from a touch-and-go landing, the engine sputtered and lost power. A forced landing was performed in a field where the aircraft struck a dirt bank and nosed over. No reason was found for the power loss.
- [NTSB DEN82FTE09](https://openairdocs.org/ntsb/DEN82FTE09.md): Aeronca 7KCAB · Morrison, CO · Accident · 1 fatal · Closed · Nov 14, 1981 · N6340N · Substantial damage
- [NTSB DEN80FTE60](https://openairdocs.org/ntsb/DEN80FTE60.md): Piper PA-30 · Elbert, CO · Accident · No injuries · Closed · Jun 24, 1980 · N8172Y · Substantial damage
- [NTSB DEN77DTE37](https://openairdocs.org/ntsb/DEN77DTE37.md): Bellanca 8KCAB · Loveland, CO · Accident · No injuries · Closed · May 1, 1977 · N36436 · Substantial damage
- [NTSB DEN77FTE24](https://openairdocs.org/ntsb/DEN77FTE24.md): Bellanca 7KCAB · Mack, CO · Accident · Minor injuries · Closed · Feb 26, 1977 · N41807 · Destroyed
- [NTSB DEN76FTE76](https://openairdocs.org/ntsb/DEN76FTE76.md): Bellanca 8KCAB · Boulder, CO · Accident · Serious injuries · Closed · Jun 5, 1976 · N8751V · Substantial damage
- [NTSB DEN73FTE62](https://openairdocs.org/ntsb/DEN73FTE62.md): Champion 7KCAB · Boulder, CO · Accident · No injuries · Closed · Mar 4, 1973 · N11FS · Substantial damage
- [NTSB DEN70DXD23](https://openairdocs.org/ntsb/DEN70DXD23.md): Champion 7KCAB · Fountain, CO · Accident · No injuries · Closed · Apr 7, 1970 · N7572F · Substantial damage
- [NTSB DEN70DXD21](https://openairdocs.org/ntsb/DEN70DXD21.md): Champion 7KCAB · Pueblo, CO · Accident · No injuries · Closed · Apr 5, 1970 · N7572F · Substantial damage
- [NTSB DEN69D0077](https://openairdocs.org/ntsb/DEN69D0077.md): Piper PA-30 · Littleton, CO · Accident · No injuries · Closed · Aug 24, 1968 · N8469Y · Substantial damage
- [NTSB DEN67F0106](https://openairdocs.org/ntsb/DEN67F0106.md): Piper PA-30 · Fountain, CO · Accident · No injuries · Closed · Sep 27, 1966 · N7903Y · Substantial damage

## 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 ('41509'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41509&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.