# NTSB investigations: Lycoming TI0-540 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.

Page 1 of 2 · 72 cases

## Latest cases

- [NTSB CEN26LA300](https://openairdocs.org/ntsb/CEN26LA300.md): Cessna T206H · Marble, CO · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 21, 2026 · N464PM · Substantial damage
  > The pilot's failure to maintain directional control during the final approach in variable and gusting wind conditions. Contributing to the accident were localized wind effects associated with mountainous terrain and with nearby convective activity.
- [NTSB CEN21LA065](https://openairdocs.org/ntsb/CEN21LA065.md): Piper PA32R · Canon City, CO · Accident · No injuries · Class 3 · Limited · Final report · Nov 20, 2020 · N4187H · Substantial damage
  > The failure of the alternator drive belt, which resulted in insufficient electrical power to extend the landing gear and a subsequent gear-up landing..
- [NTSB CEN20LA160](https://openairdocs.org/ntsb/CEN20LA160.md): Aerostar 601 · Craig, CO · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 24, 2020 · N601X · Destroyed
  > The student pilot’s flight into terrain for undetermined reasons.
- [NTSB CEN14FA467](https://openairdocs.org/ntsb/CEN14FA467.md): Piper PA 46 350P · Erie, CO · Accident · 5 fatal · Field investigation · Final report · Aug 31, 2014 · N228LL · Destroyed
  > The pilot's failure to maintain adequate airspeed and exceedance of the critical angle of attack during a go-around with a tailwind condition, which resulted in an aerodynamic stall. A contributing factor to the accident was the pilot's decision to continue…
- [NTSB CEN14FA163](https://openairdocs.org/ntsb/CEN14FA163.md): Smith Aerostar 601P · Aurora, CO · Accident · 1 fatal · Field investigation · Final report · Mar 19, 2014 · N90464 · Destroyed
  > The pilot's operation of the airplane while intoxicated, which resulted in a loss of airplane control.
- [NTSB CEN14FA084](https://openairdocs.org/ntsb/CEN14FA084.md): Piper PA 24-250 · Collbran, CO · Accident · 3 fatal · Field investigation · Final report · Dec 12, 2013 · N8037P · Substantial damage
  > The pilot’s failure to maintain adequate airspeed while maneuvering at a low altitude, which resulted in an aerodynamic stall/spin and subsequent impact with terrain.
- [NTSB CEN13LA362](https://openairdocs.org/ntsb/CEN13LA362.md): Piper PA-24-260 · Eagle, CO · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 2013 · N856CC · Substantial damage
  > The pilots’ improper fuel management, which resulted in the loss of engine power due to fuel starvation. Contributing to the accident was worn and corroded fuel senders, which transmitted inaccurate fuel readings to the fuel monitoring system.
- [NTSB CEN13CA236](https://openairdocs.org/ntsb/CEN13CA236.md): Cessna T182T · Colorado Springs, CO · Accident · No injuries · Data collection · Final report · Apr 21, 2013 · N538MA · Substantial damage
  > The pilot’s improper recovery from a bounced landing.
- [NTSB CEN12FA098](https://openairdocs.org/ntsb/CEN12FA098.md): Socata TB21 · Silverton, CO · Accident · 4 fatal · Field investigation · Final report · Dec 3, 2011 · N25153 · Substantial damage
  > The non-instrument-rated pilot’s decision to embark on a flight through forecasted instrument meteorological conditions (IMC), and his subsequent flight into IMC, which resulted in the pilot’s spatial disorientation and subsequent maneuvering of the airplane…
- [NTSB CEN11FA150](https://openairdocs.org/ntsb/CEN11FA150.md): Piper PA 46-350P · Westcliffe, CO · Accident · 2 fatal · Field investigation · Final report · Jan 9, 2011 · N727MC · Substantial damage
  > The pilot's loss of control following an encounter with moderate to severe weather.
- [NTSB CEN10LA524](https://openairdocs.org/ntsb/CEN10LA524.md): Piper PA-46-350P · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Aug 24, 2010 · N4167A · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN09CA465](https://openairdocs.org/ntsb/CEN09CA465.md): Piper PA32R · Colorado Springs, CO · Accident · No injuries · Data collection · Final report · Jul 23, 2009 · N301RT · Substantial damage
  > The pilot's low altitude encounter with windshear during takeoff.
- [NTSB DEN08LA118](https://openairdocs.org/ntsb/DEN08LA118.md): Mooney M20M · Elbert, CO · Accident · No injuries · Limited investigation · Final report · Jul 4, 2008 · N17RA · Substantial damage
  > The pilot's failure to maintain aircraft control during a go-around, resulting in an aerodynamic stall. Contributing to the accident was the high density altitude.
- [NTSB DEN08LA012](https://openairdocs.org/ntsb/DEN08LA012.md): Piper PA-31-350 · Trinidad, CO · Accident · No injuries · Limited investigation · Final report · Oct 9, 2007 · N313RA · Substantial damage
  > The pilot's failure to extend the landing gear.
- [NTSB DEN07LA119](https://openairdocs.org/ntsb/DEN07LA119.md): Cessna T206H · Gunnison, CO · Accident · Serious injuries · Limited investigation · Final report · Jul 11, 2007 · N97PP · Substantial damage
  > An inadvertent stall during takeoff/initial climb. Contributing factors in this accident were a partial loss of engine power for reasons undetermined, and high density altitude conditions.
- [NTSB DEN07CA112](https://openairdocs.org/ntsb/DEN07CA112.md): Grumman-Schweizer G-164B · Joes, CO · Accident · Minor injuries · Data collection · Final report · Jul 4, 2007 · N8459K · Substantial damage
  > the pilot's improper takeoff planning and subsequent failure to maintain aircraft control during the takeoff. Contributing factors were the high density altitude and tailwind.
- [NTSB DEN07CA110](https://openairdocs.org/ntsb/DEN07CA110.md): Cessna T206H · Steamboat Spngs, CO · Accident · No injuries · Data collection · Final report · Jun 29, 2007 · N72638 · Substantial damage
  > The pilot's inadvertent encounter with adverse weather conditions (dirt devils/whirlwinds) and his inability to control the airplane during that encounter resulting in the airplane impacting the runway, subsequently going off the side of the runway, and…
- [NTSB DEN07CA057](https://openairdocs.org/ntsb/DEN07CA057.md): Smith, Ted Aerostar 601P · Craig, CO · Accident · No injuries · Data collection · Final report · Jan 21, 2007 · N88JE · Substantial damage
  > The pilot's improper in-flight planning and unsuitable area selected for landing. A contributing factor was the snow covered terrain and runway.
- [NTSB DEN06CA127](https://openairdocs.org/ntsb/DEN06CA127.md): Piper PA-46T-350P · Colo. Springs, CO · Accident · No injuries · Data collection · Final report · Sep 13, 2006 · N71DH · Substantial damage
  > The pilot's failure to maintain control of the airplane, resulting in an inadvertent stall. Contributing factors in this accident were the jet blast encounter, and the pilot's failure to initiate a go-around when he felt an unsafe condition existed.
- [NTSB DEN06CA105](https://openairdocs.org/ntsb/DEN06CA105.md): Schweizer G-164B · Joes, CO · Accident · No injuries · Data collection · Final report · Jul 27, 2006 · N8459K · Substantial damage
  > A loss of engine power due to the failure of the supercharger. Contributing to the accident was a lack of suitable terrain for a forced landing.
- [NTSB DEN05FA128](https://openairdocs.org/ntsb/DEN05FA128.md): Piper PA-32-300 · Vail, CO · Accident · Serious injuries · Field investigation · Final report · Aug 19, 2005 · N4222R · Destroyed
  > the pilot's improper in-flight planning and decision making and failure to maintain clearance from the terrain. Contributing factors include the pilot's attempt to takeoff from the highway, high density altitude, the downdrafts, and the sign.
- [NTSB DEN03FA028](https://openairdocs.org/ntsb/DEN03FA028.md): Piper PA-32-300 · Steamboat Spgs, CO · Accident · 1 fatal · Field investigation · Final report · Dec 29, 2002 · N7989C · Destroyed
  > the pilot's inadequate in-flight planning/decision making resulting in insufficient altitude to fly over the mountain, and the subsequent inadvertent stall/mush into tree covered mountainous terrain. Contributing factors were the tail wind and high density…
- [NTSB DEN02LA093](https://openairdocs.org/ntsb/DEN02LA093.md): Cessna 310N · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Aug 9, 2002 · N111KC · Substantial damage
  > The dual student's inadequate aircraft control resulting in a hard landing. Contributing factors include, the dual student's inadequate airspeed and high flare, the inadequate supervision by the instructor, the in-flight separation of the right main landing…
- [NTSB DEN02LA018](https://openairdocs.org/ntsb/DEN02LA018.md): Piper PA-23-250 · Pagosa Springs, CO · Accident · Minor injuries · Limited investigation · Final report · Jan 14, 2002 · N6935Y · Substantial damage
  > the total power failure of the right engine due to the failure of its lubricating system. Contributing factors were the lack of suitable terrain for a forced landing, and the terrain being above the airplane's single engine performance capability.
- [NTSB DEN01FA161](https://openairdocs.org/ntsb/DEN01FA161.md): Piper PA-31-350 · Pagosa Springs, CO · Accident · 2 fatal · Field investigation · Final report · Sep 24, 2001 · N161RB · Destroyed
  > the flight crews' intentional low altitude flight, and failure to maintain obstacle clearance.
- [NTSB DEN01LA132](https://openairdocs.org/ntsb/DEN01LA132.md): Piper PA-31-350 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Jul 29, 2001 · N114SA · Substantial damage
  > the failure of the nose landing gear right drag brace (link assembly) due to fatigue.
- [NTSB DEN01LA100](https://openairdocs.org/ntsb/DEN01LA100.md): Cessna T206H · Watkins, CO · Accident · No injuries · Limited investigation · Final report · May 2, 2001 · N72582 · Substantial damage
  > the pilot's failure to maintain the proper decent rate during the flare resulting in a hard landing. Contributing factors icing conditions and accumulations of wing ice.
- [NTSB DEN01LA023](https://openairdocs.org/ntsb/DEN01LA023.md): Cessna 310N · Montrose, CO · Accident · No injuries · Limited investigation · Final report · Oct 14, 2000 · N111KC · Substantial damage
  > the pilot's inadequate airspeed on final approach which resulted in a hard landing. A contributing factor was wind shear.
- [NTSB DEN01LA005](https://openairdocs.org/ntsb/DEN01LA005.md): Piper PA-31-350 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Sep 27, 2000 · N159SW · Substantial damage
  > Total failure of the right forward inboard landing gear door hinge pin for undetermined reasons.
- [NTSB DEN00IA093](https://openairdocs.org/ntsb/DEN00IA093.md): Piper PA-32R-300 · Erie, CO · Incident · No injuries · Incident investigation · Final report · May 22, 2000 · N424TP · Minor damage
  > Improper installation of cylinders by unknown maintenance personnel who failed to torque the cylinder stud nuts sufficiently.
- [NTSB DEN00FA086](https://openairdocs.org/ntsb/DEN00FA086.md): Smith, Ted Aerostar Aerostar 601 · Estes Park, CO · Accident · 2 fatal · Field investigation · Final report · Apr 30, 2000 · N7421S · Destroyed
  > A descent below the surrounding terrain, by the pilot, in IMC conditions. Factors were high mountainous terrain, clouds, inaccurate weather evaluation by the pilot, and the pilot's flight into IMC conditions.
- [NTSB FTW98IA361](https://openairdocs.org/ntsb/FTW98IA361.md): Piper PA-31-350 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Aug 18, 1998 · N66906 · Minor damage
  > A hydraulic failure due to a ruptured hydraulic line, preventing the extension of the nose and right main landing gear.
- [NTSB FTW97LA357](https://openairdocs.org/ntsb/FTW97LA357.md): Mooney M20M · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Sep 20, 1997 · N9140Z · Substantial damage
  > The pilot's flaring of the airplane prematurely at a low airspeed that resulted in a hard landing, and an inadvertent stall during the attempted go-around and subsequent loss of control.
- [NTSB FTW97LA267](https://openairdocs.org/ntsb/FTW97LA267.md): Piper PA-31-350 · Denver, CO · Accident · No injuries · Limited investigation · Final report · Jul 15, 1997 · N800SA · Substantial damage
  > inadequate visual lookout by the bus driver. Factors relating to the accident were: darkness and bright background lighting.
- [NTSB FTW97LA206](https://openairdocs.org/ntsb/FTW97LA206.md): Piper PA-31-350 · Greeley, CO · Accident · No injuries · Limited investigation · Final report · May 28, 1997 · N491SC · Substantial damage
  > unlatching of the left outboard engine cowling latches for undetermined reason(s), which allowed the left engine cowling to separate inflight and strike the vertical stabilizer.
- [NTSB FTW97FA171](https://openairdocs.org/ntsb/FTW97FA171.md): Piper PA-32RT-300T · Rye, CO · Accident · 3 fatal · Field investigation · Final report · Apr 26, 1997 · N2225A · Destroyed
  > The pilot initiating flight into IMC conditions in mountainous terrain. Factors were mountainous terrain, low ceiling, snow, preflight planning, and in-flight planning and decision making.
- [NTSB FTW97LA107](https://openairdocs.org/ntsb/FTW97LA107.md): Piper PA-32R-300 · Salida, CO · Accident · No injuries · Limited investigation · Final report · Feb 18, 1997 · N4477F · Substantial damage
  > The airplane's performance being exceeded due to the pilot's inadequate preflight planning. Factors were the uphill runway, high density altitude, and the pilot's lack of experience performing takeoffs from a high altitude airport.
- [NTSB FTW95LA113](https://openairdocs.org/ntsb/FTW95LA113.md): Piper PA-32-300 · Howard, CO · Accident · 1 fatal · Limited investigation · Final report · Feb 8, 1995 · N41345 · Destroyed
  > The pilot's flight into known adverse weather over mountainous terrain at an inadequate altitude to recover from turbulence/downdraft. Factors related to the accident were: inadequate preflight planning/preparation by the pilot, his inadequate weather…
- [NTSB FTW94LA024](https://openairdocs.org/ntsb/FTW94LA024.md): Bellanca BL17-31ATC · Pagosa Springs, CO · Accident · No injuries · Limited investigation · Final report · Nov 3, 1993 · N9516E · Substantial damage
  > Failure by the pilot in command to maintain control of the aircraft during landing roll.
- [NTSB DEN93LA074](https://openairdocs.org/ntsb/DEN93LA074.md): Piper PA-24-260 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Jul 8, 1993 · N8967P · Substantial damage
  > Failure of the pilot in command to follow manual gear extension procedures. A factor was a total electrical failure.
- [NTSB DEN93FA012](https://openairdocs.org/ntsb/DEN93FA012.md): Piper PA-32RT-300T · Kersey, CO · Accident · 2 fatal · Field investigation · Final report · Nov 20, 1992 · N39683 · Destroyed
  > Inadvertent stall and loss of control due to structural icing. Factors were: icing conditions, and flight into known adverse weather.
- [NTSB FTW92LA110](https://openairdocs.org/ntsb/FTW92LA110.md): Piper PA-23-250 · Denver, CO · Accident · No injuries · Limited investigation · Final report · Apr 3, 1992 · N6460Y · Substantial damage
  > The loss of hydraulic fluid due to a ruptured hydraulic line in the landing gear system.
- [NTSB DEN91LA090](https://openairdocs.org/ntsb/DEN91LA090.md): Piper PA-32-300 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Jun 19, 1991 · N4064R · Substantial damage
  > The pilot's failure to maintain visual lookout. A factor was: the pilot's improper use of the throttle controls and brakes.
- [NTSB DEN91FA065](https://openairdocs.org/ntsb/DEN91FA065.md): Piper PA-31B-310 · Bennett, CO · Accident · 1 fatal · Field investigation · Final report · May 1, 1991 · N7407L · Destroyed
  > In-flight separation of the left engine cowl assembly that was not properly latched, and failure of the pilot to maintain minimum control speed, which resulted in his loss of aircraft control. Factors related to the accident were: an inadequate preflight…
- [NTSB DEN89LA164](https://openairdocs.org/ntsb/DEN89LA164.md): Piper PA-32R-301T · Telluride, CO · Accident · No injuries · Limited investigation · Final report · Jun 30, 1989 · N82908 · Substantial damage
  > The pilot's failure to maintain aircraft control during an encounter with turbulence. Contributing to the accident was the turbulence.
- [NTSB DEN88LA024](https://openairdocs.org/ntsb/DEN88LA024.md): Piper PA-24-260B · Akron, CO · Accident · Minor injuries · Limited investigation · Final report · Nov 15, 1987 · N9039P · Substantial damage
  > Bfr tkof, snow was melted off the acft in a heated hangar. The flt was bgn in blowing snow with a forecast of ocnl mod icing to 20,000'. The plt said the snow lasted only 5 to 10 min & only a trace of ice (less 1/16 inch) accumulated drg the 1st 15 min of…
- [NTSB DEN87IA056](https://openairdocs.org/ntsb/DEN87IA056.md): Piper PA-31 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Feb 14, 1987 · N7559L · No damage
  > While taxiing from a cargo ramp for takeoff on an IFR flt, the acft taxied off the ramp into the infield on the arpt and came to rest with the engines running. Ramp personnel boarded the acft, shut the engines down and summoned medical help for the plt who…
- [NTSB DEN86LA121](https://openairdocs.org/ntsb/DEN86LA121.md): Piper PA-25-260C · Lamar, CO · Accident · No injuries · Limited investigation · Final report · Apr 30, 1986 · N76LF · Substantial damage
  > During the initial telephone interview, the plt stated the eng quit due to fuel exhaustion while returning from an ag spraying flt. However, in the plt accident report, the plt states that he could not rule out mechanical problems.
- [NTSB DEN84LA091](https://openairdocs.org/ntsb/DEN84LA091.md): Piper PA-24-260 · Crested Butte, CO · Accident · Minor injuries · Limited investigation · Final report · Feb 12, 1984 · N8984P · Substantial damage
  > The acft was damaged during a forced landing on snow covered terrain after the engine failed during climb. An investigaiton revealed that the acft had 50 weight oil in it and the temperature was about 15 degrees f. the engine had been, pre-heated from the top…
- [NTSB DEN84LA024](https://openairdocs.org/ntsb/DEN84LA024.md): Bellanca 17-31ATC · Crested Butte, CO · Accident · No injuries · Limited investigation · Final report · Nov 14, 1983 · N14780 · Substantial damage
  > According to the plt, the ground was covered with about 6 inches of light snow & the wind was from the southwest at 5 to 10 KTS. A snow plow preceeded him to the rwy & had cleared a strip about 10 to 12 ft wide on the 1st 1/3 of the rwy. When the plt was…

Next page: https://openairdocs.org/ntsb.md?engine=41533&state=CO&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."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 ('41533'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41533&state=CO

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