NTSB investigations: Lycoming 0-540 series, CO
122 cases on aircraft whose registry engine model is Lycoming 0-540 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1964 | 3 |
|---|---|
| 1965 | 4 |
| 1966 | 5 |
| 1967 | 7 |
| 1968 | 4 |
| 1969 | 2 |
| 1970 | 2 |
| 1971 | 6 |
| 1972 | 6 |
| 1973 | 4 |
| 1974 | 3 |
| 1975 | 3 |
| 1976 | 2 |
| 1977 | 4 |
| 1978 | 1 |
| 1979 | 2 |
| 1981 | 2 |
| 1982 | 1 |
| 1983 | 2 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 3 |
| 1989 | 2 |
| 1990 | 2 |
| 1991 | 1 |
| 1992 | 1 |
| 1994 | 1 |
| 1995 | 3 |
| 1996 | 2 |
| 1997 | 2 |
| 1999 | 1 |
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 5 |
| 2003 | 1 |
| 2004 | 3 |
| 2005 | 1 |
| 2006 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2012 | 4 |
| 2014 | 3 |
| 2016 | 1 |
| 2019 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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 ('41532'))
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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 ('41532'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB CEN26LA042Accident · Minor injuriesClass 3 · LimitedPreliminary reportPiper PA-28-235 · Castle Rock, COOn November 10, 2025, about 1815 mountain standard time, a Piper PA-28-235 airplane, N9143W, was substantially damaged when it was involved in an accident near Castle Rock, Colorado. The pilot and one passenger reported no injuries. A second passenger…NTSB CEN25LA001Accident · No injuriesClass 4 · LimitedFinal reportCessna TR182 · Englewood, COThe collapse of the right main landing gear during landing rollout.NTSB CEN24LA206Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-24-250 · Colorado Springs, COThe pilot’s failure to use the carburetor heat during a descent that resulted in the loss of engine power due to carburetor icing.NTSB CEN23LA274Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-24-250 · Durango, COThe pilot’s failure to extend the landing gear before landing.NTSB CEN23LA253Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-24-250 · Watkins, COThe pilot’s failure to extend the landing gear before landing. Contributing to the accident was the pilot’s failure to utilize the prelanding checklist to ensure the landing gear was extended before landing.NTSB CEN23LA132Accident · No injuriesClass 4 · LimitedFinal reportMaule M-7-235B · Hotchkiss, COThe pilot’s loss of control during landing rollout on a snow-covered, turf airstrip.NTSB CEN22FA208Accident · 2 fatalClass 3 · FieldFinal reportPiper PA-32-260 · Broomfield, COThe pilot’s failure to abort the takeoff due to degraded engine performance. Contributing to the accident was the reduced performance of the engine, the reason for which could not be determined.NTSB CEN22LA165Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-28-235 · Calhan, COThe pilot’s failure to maintain directional control during landing, which resulted in a runway excursion.NTSB CEN21LA261Accident · No injuriesClass 4 · LimitedFinal reportPiper PA32 · Lafayette, COThe flight crew’s improper fuel management that resulted in fuel starvation and the loss of engine power.NTSB GAA19CA471Accident · No injuriesData collectionFinal reportPiper PA28 · Falcon, COThe pilot's failure to maintain a proper approach path and his delayed decision to go around, which resulted in impact with a construction barrier before the runway. Contributing to the accident was the pilot's decision to land on a runway closed for landing.NTSB CEN19LA183Accident · No injuriesClass 3 · LimitedFinal reportPiper PA24 · Greeley, COThe pilot’s improper landing flare, which resulted in failure of the right main landing gear and a subsequent loss of control.NTSB GAA17CA016Accident · No injuriesData collectionFinal reportRobinson Stewart J Bearhawk · Calhan, COThe pilot’s failure to maintain directional control during takeoff, which resulted in a runway excursion.NTSB CEN14FA328Accident · 3 fatalField investigationFinal reportPiper PA 28-235 · Georgetown, COThe pilot’s inability to maintain a climb while maneuvering the airplane in high-density altitude conditions that degraded the airplane’s climb performance and his exceedance of the airplane’s critical angle-of-attack, which led to an aerodynamic stall and…NTSB CEN14FA230Accident · No injuriesField investigationFinal reportPiper PA 25-235 · Northglenn, COThe pilot's decision to operate the banner-tow flight below the minimum safe altitude specified by federal regulation, which likely limited his ability to recover from a potential loss of airspeed due to a gusting wind condition. Also causal was the pilot’s…NTSB CEN14CA160Accident · Minor injuriesData collectionFinal reportPiper PA 28-235 · De Beque, COThe pilot's failure to maintain control of the airplane while maneuvering at low altitude.NTSB CEN13CA005Accident · No injuriesData collectionFinal reportPiper PA-24-250 · Colorado Springs, COThe pilot’s failure to maintain airspeed during the landing with known structural icing, which resulted in the airplane’s stall. Contributing to the accident was the pilot’s failure to divert to an area where conditions were not conducive to icing.NTSB CEN12FA571Accident · 1 fatalField investigationFinal reportPiper PA-24-250 · Milner, COThe student pilot's impairment from alcohol, marijuana, and hypoxia, which adversely affected his ability to maintain control of the airplane.NTSB CEN12LA473Accident · No injuriesLimited investigationFinal reportCessna TR182 · Steamboat Springs, COThe pilot's failure to extend the landing gear before landing.NTSB CEN12CA157Accident · Minor injuriesData collectionFinal reportCessna R182 · Colorado Springs, COThe pilot did not extend the landing gear before landing.NTSB CEN11FA428Accident · 1 fatalField investigationFinal reportCessna R182 · Thornton, COThe pilot's inadvertent encounter with a microburst while operating at a low altitude, which resulted in a loss of control from which the pilot could not recover. Contributing to the accident was the pilot’s inadequate preflight planning for the forecasted…NTSB CEN10FA115Accident · 3 fatalField investigationFinal reportPiper PA-25-235 · Boulder, COThe failure of both pilots to see and avoid the other resulting in a midair collision. Contributing to the accident was the lack of perceived visual relative motion of the Piper and the Cirrus to the pilot of each airplane, the terrain background, and the…NTSB CEN09LA171Accident · No injuriesLimited investigationFinal reportPiper PA-28C-235 · Falcon, COA loss of engine power due to fuel starvation as a result of the pilot's inadequate fuel management.NTSB DEN06LA070Accident · No injuriesLimited investigationFinal reportCessna T-R182RG · Englewood, COthe pilot inadvertently retracting the landing gear.NTSB DEN06LA059Accident · No injuriesLimited investigationFinal reportCessna TR182 · Fort Collins, COthe loss of engine power due to fuel exhaustion. Contributing factors were the pilot's improper preflight planning, the pilot's failure to refuel the airplane, and the lack of suitable terrain for the forced landing.NTSB DEN06LA024Accident · No injuriesLimited investigationFinal reportPiper PA-28-235 · Peyton, COthe pilot's delay in applying carburetor heat that resulted in the partial loss of engine power due to carburetor ice. A contributing factor was the lack of suitable terrain for the forced landing.NTSB DEN04LA129Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Sterling, COthe failure of the landing gear extension system for undetermined reasons.NTSB DEN04CA121Accident · Minor injuriesData collectionFinal reportPiper PA-24-250 · Model, COthe pilot's improper in-flight planning and decision making resulting in a loss of engine power due to fuel exhaustion. A contributing factor was the trees.NTSB DEN04CA073Accident · No injuriesData collectionFinal reportPiper PA-25-235 · Flagler, COthe pilot's improper in-flight planning/decision which led to fuel exhaustion and subsequent loss of engine power. Factors contributing to the accident were the low altitude, low airspeed, and the inoperative fuel quantity gauge.NTSB DEN03LA080Accident · No injuriesLimited investigationFinal reportMaule MX-7-235 · Watkins, COthe pilot's failure to maintain directional control of the aircraft during the landing roll out. Contributing factors were the unlocked tailwheel.NTSB DEN02LA096Accident · Minor injuriesLimited investigationFinal reportPiper PA-25-235 · Boulder, COthe pilot's inadequate preflight preparation, which resulted in fuel exhaustion and a subsequent loss of engine power, and his failure to maintain adequate airspeed during the forced landing, which resulted in an inadvertent stall/mush. Factors included the…NTSB DEN02LA090Accident · Serious injuriesLimited investigationFinal reportPiper PA-32-260 · Victor, COthe pilot's failure to refuel, resulting in fuel exhaustion and a subsequent loss of engine power. Contributing factors were the pilot's use of inappropriate medication, and the unsuitable terrain on which to make a forced landing.NTSB DEN02LA054Accident · Minor injuriesLimited investigationFinal reportCessna TR182 · Glenwood Sprngs, COthe pilot's failure to maintain clearance from a tree while conducting an aborted landing. Contributing factors were the pilot’s low approach airspeed, and his failure to maintain directional control during landing roll.NTSB DEN02LA040Accident · No injuriesLimited investigationFinal reportCessna TR182 · Kersey, COThe pilot's inadequate planning decision which led to fuel exhaustion and subsequent loss of engine power.NTSB DEN02LA020Accident · No injuriesLimited investigationFinal reportMaule M-5-235C · Grand Junction, COthe failure of the tail wheel left steering cable. A contributing factor was the pilot's loss of aircraft control (not possible) and the subsequent inadvertent ground loop.NTSB DEN02LA015Accident · No injuriesLimited investigationFinal reportPiper PA-28-235 · Crested Butte, COa wet brake that later froze resulting in a loss of directional control on landing. A contributing factor was the snow bank.NTSB DEN01LA083Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Telluride, COthe pilot's failure to maintain control of the airplane during initial climb. Factors include the gusty wind and high density altitude conditions.NTSB DEN01LA031Accident · No injuriesLimited investigationFinal reportCessna R182 · Broomfield, COthe flight instructor's inadequate supervision of the dual student, which resulted in a hard landing. Contributing factors were the dual student flaring the airplane prematurely, resulting in an inadvertent stall/mush.NTSB DEN00LA178Accident · No injuriesLimited investigationFinal reportPiper PA-28-235 · Broomfield, COThe pilot's failure to maintain adequate clearance from a vehicle parked beside the ramp while he was taxiing the aircraft from landing.NTSB DEN99LA146Accident · Minor injuriesLimited investigationFinal reportPiper PA-32-260 · Aspen, COThe pilot's inadequate in flight planning. Factors were the high density altitude, the lack of suitable terrain for a forced landing, and the sign post that the right wing impacted.NTSB FTW97LA202Accident · No injuriesLimited investigationFinal reportPiper PA-25-235 · Lamar, COFailure of the left magneto and crank shaft idler drive gears. Factors were failure to perform a 100 hour inspection and unsuitable terrain for a forced landing.NTSB FTW97LA111Accident · No injuriesLimited investigationFinal reportCessna TR182 · Pueblo, COImproper repair to the nose landing gear assembly. A factor was binding of the nose gear extension assembly due to the improper repair.NTSB FTW96LA402Accident · No injuriesLimited investigationFinal reportCessna TR182 · Telluride, COfailure of the generator control unit (GCU), which resulted in a total electrical failure and failure of the main landing gear to lock in place.NTSB FTW96LA214Accident · No injuriesLimited investigationFinal reportMaule M-5-235C · Akron, COthe pilot's failure to maintain directional control.NTSB FTW96LA031Accident · Serious injuriesLimited investigationFinal reportCessna 182TR · Boulder, COThe pilot's failure to determine the amount of fuel aboard the aircraft during preflight, and his failure to refuel the aircraft.NTSB FTW95LA314Accident · Minor injuriesLimited investigationFinal reportCessna TR182 · Center, COImproper recovery from a bounced landing by the pilot-in-command. A factor was a premature landing flare.NTSB FTW95LA304Accident · No injuriesLimited investigationFinal reportPiper PA-25-235 · Stratton, COThe pilot's excessive rate of descent as he initiated the swath run and operation of the aircraft over the maximum allowable gross weight.NTSB FTW95FA030Accident · 2 fatalField investigationFinal reportPiper PA-28-235 · Aurora, COTHE CFI's FAILURE TO MAINTAIN AIRCRAFT CONTROL DUE TO SPATIAL DISORIENTATION. FACTORS WERE: A DARK, MOONLESS NIGHT WITH NO VISIBLE HORIZON AND RECENCY OF NIGHT EXPERIENCE BY THE FLIGHT INSTRUCTOR.NTSB DEN92LA031Accident · No injuriesLimited investigationFinal reportMaule M-5-235C · Durango, COThe pilot's failure to maintain directional control. A factor was: crosswind.NTSB DEN92LA006Accident · Minor injuriesLimited investigationFinal reportPiper PA-24-250 · Ellicott, COA power loss for undetermined reasons, the pilot's poorly planned approach, and excessive airspeed. Factors were: the pilot's intentional flight into IMC, accumulation of wing ice and his becoming lost disoriented.NTSB DEN90DTE08Accident · No injuriesFinal reportPiper PA-25-235 · Idalia, COThe encounter with an unfavorable wind, a dust devil. A factor was the inability of the pilot to maintain directional control.