# NTSB investigations: Lycoming 0-235 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 · 75 cases ## Latest cases - [NTSB CEN26LA053](https://openairdocs.org/ntsb/CEN26LA053.md): Piper PA-22-108 · Colorado Springs, CO · Accident · No injuries · Class 4 · Limited · Final report · Nov 26, 2025 · N4588Z · Substantial damage > The pilot’s failure to maintain directional control during the landing. - [NTSB CEN25LA235](https://openairdocs.org/ntsb/CEN25LA235.md): Piper PA12 · Brush, CO · Accident · No injuries · Class 4 · Limited · Final report · Jul 2, 2025 · N7635H · Substantial damage > The pilot’s failure to maintain directional control while performing a touch and go landing. - [NTSB GAA20CA014](https://openairdocs.org/ntsb/GAA20CA014.md): Piper PA38 · Colorado Springs, CO · Accident · No injuries · Data collection · Final report · Oct 15, 2019 · N9708T · Substantial damage > The pilot's failure to maintain the runway heading while taking off with a gusting tailwind, which resulted in impact with a fence. - [NTSB GAA17CA528](https://openairdocs.org/ntsb/GAA17CA528.md): Cessna 152 · Broomfield, CO · Accident · No injuries · Data collection · Final report · Sep 9, 2017 · N89732 · Substantial damage > The student pilot’s failure to maintain directional control while landing in gusting crosswind conditions. - [NTSB GAA16CA336](https://openairdocs.org/ntsb/GAA16CA336.md): Cessna 152 · Delta, CO · Accident · No injuries · Data collection · Final report · Jun 25, 2016 · N152L · Substantial damage > The pilot exceeded the critical angle of attack during the initial climb in tailwind conditions, which resulted in an aerodynamic stall. - [NTSB CEN12CA627](https://openairdocs.org/ntsb/CEN12CA627.md): Schneider John W PT-2A · Watkins, CO · Accident · No injuries · Data collection · Final report · Sep 4, 2012 · N6744J · Substantial damage > The pilot's loss of control during takeoff resulting in a runway excursion. Contributing to the accident was an unexpected wind gust. - [NTSB CEN12FA594](https://openairdocs.org/ntsb/CEN12FA594.md): Piper PA-12 · Rye, CO · Accident · 2 fatal · Field investigation · Final report · Aug 31, 2012 · N3031M · Substantial damage > The pilot’s selection of a flightpath toward rising terrain that exceeded the climb capability of the airplane. - [NTSB CEN11CA677](https://openairdocs.org/ntsb/CEN11CA677.md): Piper PA-22-108 · Monte Vista, CO · Accident · No injuries · Data collection · Final report · Sep 4, 2011 · N5934Z · Substantial damage > The student pilot's loss of control while landing, which resulted in a ground loop. - [NTSB CEN11CA284](https://openairdocs.org/ntsb/CEN11CA284.md): Piper PA38 · Peyton, CO · Accident · No injuries · Data collection · Final report · Apr 13, 2011 · N107WC · Substantial damage > The pilot's loss of directional control during landing. - [NTSB CEN09CA367](https://openairdocs.org/ntsb/CEN09CA367.md): Cessna 152 · Fort Collins, CO · Accident · No injuries · Data collection · Final report · Jun 18, 2009 · N95144 · Substantial damage > The pilot's failure to control the airplane after engine startup, resulting in a ground collision with a nearby airplane. - [NTSB DEN08CA047](https://openairdocs.org/ntsb/DEN08CA047.md): Cessna 152 · Loveland, CO · Accident · No injuries · Data collection · Final report · Jan 2, 2008 · N24965 · Substantial damage > the student pilot's premature flare resulting in the loss of aircraft control. - [NTSB DEN07CA141](https://openairdocs.org/ntsb/DEN07CA141.md): Eaa Biplane P · Parker, CO · Accident · Minor injuries · Data collection · Final report · Aug 21, 2007 · N6193 · Substantial damage > The loss of engine power for undetermined reasons. A contributing factor was the pilot's intentional maneuver into a piece of machinery. - [NTSB DEN06CA134](https://openairdocs.org/ntsb/DEN06CA134.md): Cessna 152 · Bennett, CO · Accident · No injuries · Data collection · Final report · Sep 26, 2006 · N93873 · Substantial damage > The pilot's failure to maintain control of the airplane during the aborted takeoff. Factors contributing to the accident were the low airspeed and the pilot's improper in-flight planning. - [NTSB DEN05LA141](https://openairdocs.org/ntsb/DEN05LA141.md): Denight 100D2 · Hudson, CO · Accident · 2 fatal · Limited investigation · Final report · Sep 16, 2005 · N197D · Destroyed > the pilot's failure to maintain adequate airspeed resulting in an inadvertent stall/spin. - [NTSB DEN05CA129](https://openairdocs.org/ntsb/DEN05CA129.md): Piper PA-18A-135 · Cedaredge, CO · Accident · No injuries · Data collection · Final report · Aug 17, 2005 · N7172K · Substantial damage > the pilot's failure to maintain aircraft control, and the pilot's improper in-flight planning. Contributing to the accident was the wind shift, resultant tailwind, and the inadvertent stall. - [NTSB DEN05LA060](https://openairdocs.org/ntsb/DEN05LA060.md): Piel Emeraude CP-305 · Del Norte, CO · Accident · 2 fatal · Limited investigation · Final report · Mar 1, 2005 · N9091 · Destroyed > The pilot's failure to maintain clearance with the terrain for undetermined reasons. - [NTSB DEN05LA023](https://openairdocs.org/ntsb/DEN05LA023.md): Cessna 152 · Lyons, CO · Accident · No injuries · Limited investigation · Final report · Nov 14, 2004 · N48943 · Destroyed > the pilot's inadequate in-flight planning/decision by his intentional VFR flight into IMC, and his failure to maintain obstacle clearance. - [NTSB DEN03LA154](https://openairdocs.org/ntsb/DEN03LA154.md): Bellanca 7ECA · Byers, CO · Accident · No injuries · Limited investigation · Final report · Sep 20, 2003 · N41698 · Substantial damage > The pilot not maintaining adequate clearance from the ground and his improper in-flight planning/decision. Factors contributing to the accident were the tailwind, the low altitude, the tree, the people, the embankment, and the ravine. - [NTSB SEA02LA048](https://openairdocs.org/ntsb/SEA02LA048.md): Cessna 152 · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Mar 4, 2002 · N24933 · Substantial damage > The pilot's failure to maintain directional control of the aircraft during landing. Factors were a contaminated runway, which was icy and covered with snow, and a snow bank. - [NTSB DEN01LA063](https://openairdocs.org/ntsb/DEN01LA063.md): Cessna 152 · Grand Junction, CO · Accident · No injuries · Limited investigation · Final report · Mar 3, 2001 · N24950 · Substantial damage > the student pilot's failure to recover from a bounced landing, which resulted in porpoising and subsequently a nose over. - [NTSB DEN01LA009](https://openairdocs.org/ntsb/DEN01LA009.md): Grumman American AA-1A · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Oct 29, 2000 · N41RC · Substantial damage > Carburetor ice formation due to the pilot's improper use of the carburetor heat control. Factors were the fence and fence post. - [NTSB DEN00LA180](https://openairdocs.org/ntsb/DEN00LA180.md): Grumman American AA-1B · Erie, CO · Accident · No injuries · Limited investigation · Final report · Sep 29, 2000 · N9622L · Substantial damage > Inadequate supervision by the certified flight instructor. Factors were loss of control by the student pilot, the flight instructor's failure to properly monitor the student pilot's rate of descent on final approach, and the flight instructor's lack of recent… - [NTSB FTW98LA412](https://openairdocs.org/ntsb/FTW98LA412.md): Cessna 152 · Durango, CO · Accident · No injuries · Limited investigation · Final report · Sep 27, 1998 · N4568F · Substantial damage > Improper maintenance by an unknown person and the subsequent throttle cable disconnect due to a castellated nut separation. Factors were the none suitable soft terrain for the forced landing, and the failure of the nose wheel landing gear during the landing… - [NTSB FTW98LA199](https://openairdocs.org/ntsb/FTW98LA199.md): Cessna 152 · Fort Collins, CO · Accident · No injuries · Limited investigation · Final report · Apr 30, 1998 · N25525 · Substantial damage > the student pilot's improper use of the rudder controls, which resulted in loss of directional control, a ground swerve, an encounter with soft terrain, and a nose over. The soft terrain was a related factor. - [NTSB FTW97LA005](https://openairdocs.org/ntsb/FTW97LA005.md): Cessna 152 · Colorado Spgs, CO · Accident · No injuries · Limited investigation · Final report · Oct 4, 1996 · N25772 · Substantial damage > the student pilot attempting to exit the runway onto a taxiway at excessive speed. A factor was the pilot's failure to land the aircraft in the proper touchdown zone. - [NTSB FTW95LA196](https://openairdocs.org/ntsb/FTW95LA196.md): Cessna 152 · Durango, CO · Accident · Minor injuries · Limited investigation · Final report · May 14, 1995 · N67492 · Substantial damage > The student pilot's improper landing flare and improper bounced landing recovery. - [NTSB FTW95LA048](https://openairdocs.org/ntsb/FTW95LA048.md): Cessna 152 · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Nov 16, 1994 · N6386L · Substantial damage > The pilot's loss of directional control. - [NTSB DEN93LA024](https://openairdocs.org/ntsb/DEN93LA024.md): Cessna 152 · Durango, CO · Accident · No injuries · Limited investigation · Final report · Jan 28, 1993 · N67492 · Substantial damage > Power loss due to water contaminated fuel. A factor was: unsuitable terrain for a forced landing. - [NTSB DEN92LA023](https://openairdocs.org/ntsb/DEN92LA023.md): Cessna 152 · Falcon, CO · Accident · No injuries · Limited investigation · Final report · Jan 4, 1992 · N774WS · Substantial damage > Engine failure over unsuitable terrain due to fuel exhaustion. Factors were: pilot inexperience and becoming lost and disoriented. - [NTSB DEN92LA010](https://openairdocs.org/ntsb/DEN92LA010.md): Bellanca 7ECA · Watkins, CO · Accident · No injuries · Limited investigation · Final report · Nov 27, 1991 · N41698 · Substantial damage > Failure to maintain directional control of the airplane during landing flare. A factor was the crosswind condition that existed at the time of the accident. - [NTSB DEN91LA115](https://openairdocs.org/ntsb/DEN91LA115.md): Luscombe 8A · Parker, CO · Accident · Minor injuries · Limited investigation · Final report · Aug 17, 1991 · N2253K · Substantial damage > Physical impairment of the pilot in command for unknown reasons. - [NTSB DEN91LA104](https://openairdocs.org/ntsb/DEN91LA104.md): Cessna 152 · Fountain, CO · Accident · No injuries · Limited investigation · Final report · Jul 24, 1991 · N24204 · Substantial damage > The pilot's selection of unsuitable terrain on which to make a landing. Factors were: the pilot's inadequate preflight planning, and weather conditions that included low ceiling, obscuration, fog, and drizzle. - [NTSB DEN90LA034](https://openairdocs.org/ntsb/DEN90LA034.md): Piper PA-38-112 · Firestone, CO · Accident · Minor injuries · Limited investigation · Final report · Dec 26, 1989 · N9570T · Substantial damage > Premature liftoff by the pilot which resulted in insufficient airspeed. - [NTSB DEN89LA050](https://openairdocs.org/ntsb/DEN89LA050.md): Cessna 152 II · Gilcrest, CO · Accident · No injuries · Limited investigation · Final report · Dec 29, 1988 · N46974 · Substantial damage > The plt, with his wife as a pax, departed greeley, CO, on a cross-country flt to clayton, NM. After landing, the pilot had his aircraft refueled. It took 23.5 gallons of fuel to fill the fuel tanks. The plt then took off, flew 46 miles southeast, then turned… - [NTSB DEN89LA042](https://openairdocs.org/ntsb/DEN89LA042.md): Cessna 152 · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Dec 16, 1988 · N49209 · Substantial damage > The plt was flying a cross-country flight. She said that 3 miles from her destination, the engine quit when the plane ran out of fuel. A landing on an ice covered asphalt road was performed. During roll out, the left main gear went off the road and the left… - [NTSB DEN89LA039](https://openairdocs.org/ntsb/DEN89LA039.md): Cessna 152 · Watkins, CO · Accident · No injuries · Limited investigation · Final report · Dec 4, 1988 · N4782B · Substantial damage > The student plt was practicing touch and go landings during an unsupervised solo flight. Runway 26 was in use, with winds reported as 320 deg at 5 KTS. At the first landing, the acft touched down nose first, thirty feet left of the center line. The acft… - [NTSB DEN88LA187](https://openairdocs.org/ntsb/DEN88LA187.md): Cessna 152 · Leadville, CO · Accident · Minor injuries · Limited investigation · Final report · Aug 19, 1988 · N93538 · Substantial damage > The student plt was lost during a solo cross country instructional flight. After landing and refueling at Leadville, Colorado, he attempted to fly through a mountain pass towards his destination. He climbed the acft to 12,000 and tried to continue the climb.… - [NTSB DEN88LA155](https://openairdocs.org/ntsb/DEN88LA155.md): Cessna 152 · Aurora, CO · Accident · Minor injuries · Limited investigation · Final report · Jul 9, 1988 · N67712 · Substantial damage > This was the student pilot's first solo landing. She said the acft drifted to the left of the centerline during the landing roll and she attempted to correct with right rudder. However, the acft continued to the left and ran off the left side of the rwy. The… - [NTSB DEN88LA082](https://openairdocs.org/ntsb/DEN88LA082.md): Cessna 152 · Fort Collins, CO · Accident · No injuries · Limited investigation · Final report · Mar 9, 1988 · N47567 · Substantial damage > The private plt was performing a night solo training flight in the local area. After several stop and go landings, the plt was returning to her home airport. At 6300FT MSL, in cruise flight, the plt reported that the engine quit. Attempts to restart were not… - [NTSB DEN88LA042](https://openairdocs.org/ntsb/DEN88LA042.md): Cessna 152 · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Jan 8, 1988 · N280SV · Substantial damage > The plt reported that he was making touch and go landings on rwy 09, an asphalt rwy 6200 x 75 ft. the wind was light and variable. The plt said that during the 4th t&g, he landed a little fast and not perfectly aligned with the rwy. When he applied pwr to… - [NTSB DEN88LA019](https://openairdocs.org/ntsb/DEN88LA019.md): Cessna 152 · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Nov 4, 1987 · N49209 · Substantial damage > The recently certificated private plt was taxiing his acft to rwy 9 for a night takeoff. Another acft began its takeoff roll on rwy 9. As a courtesy, the taxiing plt switched off his taxi light so as not to blind the other plt. The taxiing plt used the glow… - [NTSB DEN87LA198](https://openairdocs.org/ntsb/DEN87LA198.md): Cessna 152 · Watkins, CO · Accident · No injuries · Limited investigation · Final report · Jul 25, 1987 · N52MA · Substantial damage > The plt was practicing touch-and-go landings on rwy 26. He estimated the wind to be 180 deg at 8 KTS. The plt said that on the third landing attempt, a 15 kt gust of wind caused the acft to drift to the right. He attempted to correct with left aileron and… - [NTSB DEN87FA035](https://openairdocs.org/ntsb/DEN87FA035.md): Piper PA-12-150 · Gilcrest, CO · Accident · 1 fatal · Field investigation · Final report · Dec 27, 1986 · N78475 · Destroyed > The plt made a low pass at aprx 200 ft AGL & waved at TW0 friends who were duck hunting. He then made a 2nd pass at aprx 150 ft & left the area. About 10 min later, the acft returned & was seen flying down a river at tree top level. The acft struck 3 of 4… - [NTSB DEN86LA197](https://openairdocs.org/ntsb/DEN86LA197.md): Cessna A150N · Akron, CO · Accident · No injuries · Limited investigation · Final report · Jul 14, 1986 · N757GH · Substantial damage > The plt stated the acft he was piloting encountered a severe downdraft during initial climbout, which forced the acft to the ground. Upon ground contact, the acft nosed over onto its back. - [NTSB DEN86LA123](https://openairdocs.org/ntsb/DEN86LA123.md): Cessna 152 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · May 1, 1986 · N94703 · Substantial damage > According to the student plt, he flared too high during landing & landed hard, collapsing the nose gear. - [NTSB DEN86FA070](https://openairdocs.org/ntsb/DEN86FA070.md): Cessna 152 · Berthoud, CO · Accident · 2 fatal · Field investigation · Final report · Feb 2, 1986 · N46193 · Substantial damage > Student plt rented acft from flying club, acft was observed by witnesses to approach the lake from the south end at a low alt. Acft struck water with right main lnd gear and rt wing tip, and nosed over. The water was described as being 'glassy' and the sun… - [NTSB DEN86LA036](https://openairdocs.org/ntsb/DEN86LA036.md): Cessna 152 II · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Dec 1, 1985 · N49209 · Substantial damage > According to the plt, during the landing roll the acft veered to the left of the rwy and struck a snow berm. The plt stated that the accident could have been prevented if he had held the 'nose wheel off the ground' longer and not relaxed his attention. - [NTSB DEN85LA077](https://openairdocs.org/ntsb/DEN85LA077.md): Cessna 152 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Feb 8, 1985 · N94703 · Substantial damage > The student plt lost directional control of the acft when pwr was added to takeoff during a touch and go landing. The plt stated the acft began to veer right when pwr was added and he applied 'too much right rudder' to correct. The acft veered left and… - [NTSB DEN84LA174](https://openairdocs.org/ntsb/DEN84LA174.md): Cessna 152 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Jun 9, 1984 · N5420P · Substantial damage > After receiving clearance to rwy 16L, the plt began taxiing thru a congested area where the taxiway & an arpt road were routed thru a hangar/parking area. In that area, the roadway was adjacent to the taxiway & to the right of the plt as he was taxiing. The… - [NTSB DEN84LA055](https://openairdocs.org/ntsb/DEN84LA055.md): Cessna 152 · Hudson, CO · Accident · No injuries · Limited investigation · Final report · Dec 30, 1983 · N49786 · Substantial damage > After returning from a maintenance test flt, the plt made a normal apch to land on a snow covered rwy. According to the plt & his passenger, the acft touched down along the right side of the rwy in snow. The plane then veered to the right & nosed over. No… Next page: https://openairdocs.org/ntsb.md?engine=41505&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 ('41505')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=41505&state=CO --- 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.