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NTSB investigations: Lycoming 0-540 series, MN

49 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19642026

NTSB investigations: Lycoming 0-540 series, MN per year, 1964–2026: 49 cases
1964	2
1965	1
1967	1
1969	1
1970	1
1972	1
1973	3
1974	2
1975	3
1977	2
1978	3
1979	3
1980	1
1982	1
1983	1
1985	1
1986	1
1987	1
1988	1
1990	1
1993	1
1995	1
1996	2
1997	2
2000	1
2003	1
2005	1
2008	2
2017	1
2020	1
2021	1
2022	1
2025	1
2026	2

Where

Latest cases

Query with 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" = 'MN' 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

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\" = 'MN' 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" = 'MN' 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

Run 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 CEN26LA242Accident · No injuriesClass 3 · LimitedPreliminary reportPiper PA-25-235 · Forest Lake, MNOn July 4, 2026, about 0942 central daylight time, a Piper PA-25-235 airplane, N386AB, was substantially damaged when it was involved in an accident near Forest Lake, Minnesota. The pilot was not injured. The airplane was operated as a Title 14 Code of…Jul 4, 2026 · N386AB · Substantial damage NTSB CEN26LA211Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-28-235 · Montevideo, MNA total loss of engine power on approach due to carburetor icing.Jun 1, 2026 · N15291 · Substantial damage NTSB CEN26LA038Accident · No injuriesClass 4 · LimitedFinal reportCessna R182 · Brainerd, MNThe pilot’s failure to extended to landing gear before landing.Nov 5, 2025 · N9054C · Substantial damage NTSB CEN22LA404Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Beardsley, MNThe pilot’s failure to maintain aircraft control during the approach to land that resulted in an excessive descent rate and impact with terrain.Aug 30, 2022 · N7048C · Substantial damage NTSB CEN21LA461Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-32-260 · Hancock, MNA total loss of engine power as a result of fuel starvation. Contributing to the accident was the pilot’s failure to properly manage the fuel on board the airplane and his failure to perform an adequate preflight inspection.Sep 29, 2021 · N130GH · Substantial damage NTSB CEN20LA374Accident · 1 fatalClass 3 · LimitedFinal reportPiper PA28 · Walker, MNThe pilot’s impairment from the effects of an undiagnosed brain tumor.Sep 2, 2020 · N8957W · Substantial damage NTSB CEN17FA361Accident · 3 fatalField investigationFinal reportCessna TR182 · Thief River Falls, MNThe noninstrument-rated pilot's decision to depart into instrument meteorological conditions, and his subsequent loss of control due to spatial disorientation.Sep 23, 2017 · N4777T · Destroyed NTSB CEN09CA109Accident · No injuriesData collectionFinal reportPiper PA28 · Ely, MNThe pilot's failure to maintain directional control during landing. Contributing to the accident were the reduced left main landing gear wheel rotation for undetermined reasons and the snow-covered runway.Dec 17, 2008 · N845D · Substantial damage NTSB CHI08CA243Accident · Minor injuriesData collectionFinal reportPiper PA-25-235 · Cosmos, MNThe pilot's failure to maintain clearance from the guide wire while maneuvering on an aerial application flight. Contributing to the accident was the presence of the guide wire.Aug 11, 2008 · N7297Z · Substantial damage NTSB CHI05CA066Accident · No injuriesData collectionFinal reportRobinson R44 · Minneapolis, MNThe pilot's inadequate compensation for the wind conditions and his failure to maintain control of the helicopter while maneuvering to center the helicopter on a cart. A factor associated with the accident was the wind gusts.Feb 5, 2005 · N7091C · Substantial damage NTSB CHI03FA219Accident · 1 fatalField investigationFinal reportPiper PA-28-235 · Jackson, MNThe pilot's intentional flight into terrain as an act of suicide.Jul 21, 2003 · N33774 · Destroyed NTSB CHI00LA300Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · Sandstone, MNthe pilot exceeding the proper touchdown point on the runway.Sep 15, 2000 · N4584P · Substantial damage NTSB CHI98LA037Accident · No injuriesLimited investigationFinal reportPiper PA-32-260 · Lakeville, MNfuel starvation due a deteriorated grommet in an Adel clamp, and a loose mixture control cable.Oct 31, 1997 · N3359W · Substantial damage NTSB CHI97LA052Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Franklin, MNThe pilot's inadequate inflight planning and his fuel mismanagement, which resulted in fuel exhaustion and the loss of engine power. A contributing factor with this accident was a frost blocked cockpit windshield.Jan 13, 1997 · N6495P · Substantial damage NTSB CHI96LA245Accident · Minor injuriesLimited investigationFinal reportPiper PA-25-235 · Beltrami, MNthe pilot's inadequate preflight planning. Factors in the accident were the pilot's failure to jettison the load and the soft runway overrun area.Jul 17, 1996 · N4997Y · Substantial damage NTSB CHI96LA137Accident · No injuriesLimited investigationFinal reportPiper PA-32-260 · Aitkin, MNthe pilot's improper planning/decision, which resulted in his failure (or inability) to adequately compensation for wind conditions. Factors relating to the accident were: the gusty crosswind condition and the snowbank.Apr 22, 1996 · N4883S · Substantial damage NTSB CHI95LA245Accident · No injuriesLimited investigationFinal reportPiper PA-25-235 · Oklee, MNthe pilot failed to maintain clearance with trees. Factors associated with the accident were the trees and the pilot's diverted attention.Jul 28, 1995 · N7797Z · Destroyed NTSB CHI93LA087Accident · Minor injuriesLimited investigationFinal reportPiper PA-32 · Austin, MNThe pilot's failure to maintain altitude. The pilot's continued flight into IMC, diverted attention and the environmental conditions were factors.Feb 4, 1993 · N3658W · Substantial damage NTSB MKC90LA135Accident · No injuriesLimited investigationFinal reportCallair A-9 · Barrett, MNInadequate visual outlook and a delayed pull-up by the pilot in command.Jun 22, 1990 · N9621Z · Substantial damage NTSB CHI88DER04Accident · No injuriesFinal reportPiper PA-25 · Elbow Lake, MNThe pilot was practicing low level flight in preparation for his certification under 14 CFR 137 when the aircraft experienced a collision with wires. The aircraft was substantially damaged during this collision and the subsequent collision with trees and the…Jul 24, 1988 · N6590Z · Substantial damage NTSB CHI87DER04Accident · Minor injuriesFinal reportPiper PA-32-260 · Pine Center, MNAfter noticing a loss in oil pressure, the pilot initiated an emergency landing in a swamp. The aircraft impacted trees and received substantial damage. The pilot reported minor injuries. Subsequent investigation revealed that the oil sump contained several…Apr 10, 1987 · N56721 · Substantial damage NTSB CHI86FER12Accident · Minor injuriesFinal reportPiper PA-25-235 · New Richland, MNThe aircraft performed a forced landing which resulted in substantial damage. Water was found in the fuel system. Water was also found in the underground fuel supply used to refuel the crop duster.Jul 6, 1986 · N9824P · Substantial damage NTSB CHI85LA363Accident · No injuriesLimited investigationFinal reportCallair A-9 · Hollandale, MNDuring a maneuvering turn while crop dusting the pilot experienced a muffler failure and engine fire. He landed successfully and abandoned the aircraft. Subsequent investigation revealed that the bracket that holds the muffler/ exhaust pipe to the aircraft…Aug 30, 1985 · N8273H · Substantial damage NTSB CHI83LA243Accident · Minor injuriesLimited investigationFinal reportPiper PA-25 · Roseau, MNDuring an aerial application flt, the acft collided with power lines during a pull-up from a swath run. The plt reported no preimpact malfunctions.Jun 6, 1983 · N7221L · Substantial damage NTSB CHI82DA347Accident · No injuriesFinal reportBell 47G-4A · Near Brooten, MNThe pilot had been engaged in a spraying operation for 2.5 hrs when he returned and landed on a flat bed type trailer to service the helicopter. After the hopper was serviced with 60 gal of herbicide, the pilot began his take off. He stated that just after…Aug 20, 1982 · N4090G · Substantial damage NTSB CHI80DER58Accident · No injuriesClosedPiper PA-25 · Bingham Lake, MNSep 5, 1980 · N9785P · Substantial damage NTSB MKC79DER69Accident · No injuriesClosedPiper PA-32 · Minneapolis, MNAug 18, 1979 · N3641W · Substantial damage NTSB MKC79DER58Accident · Minor injuriesClosedPiper PA-25 · Warroad, MNJul 29, 1979 · N7298Z · Substantial damage NTSB MKC79DER55Accident · No injuriesClosedPiper PA-25 · Roseau, MNJul 17, 1979 · N9750P · Substantial damage NTSB MKC79DER03Accident · No injuriesClosedCessna 182RG · Wolverton, MNOct 21, 1978 · N3277C · Substantial damage NTSB MKC79DER57Accident · No injuriesClosedPiper PA-25 · Mahnomen, MNJun 16, 1978 · N7739Z · Substantial damage NTSB MKC78DER47Accident · Minor injuriesClosedPiper PA-25 · Warren, MNMay 27, 1978 · N6816Z · Substantial damage NTSB MKC77DER84Accident · No injuriesClosedPiper PA-28 · Starbuck, MNSep 20, 1977 · N8671W · Substantial damage NTSB MKC77FER71Accident · No injuriesClosedPiper PA-25 · Springfield, MNJul 30, 1977 · N7634Z · Substantial damage NTSB MKC76IK011Incident · Minor injuriesClosedPiper PA-24 · Houston, MNJul 28, 1975 · N7179P · Minor damage NTSB MKC76FER09Accident · No injuriesClosedPiper PA-25 · Olivia, MNJul 18, 1975 · N7630Z · Substantial damage NTSB MKC75FER41Accident · No injuriesClosedPiper PA-24 · Rochester, MNJan 15, 1975 · N7179P · Substantial damage NTSB MKC75DER06Accident · No injuriesClosedPiper PA-25 · Moorhead, MNJul 27, 1974 · N8600L · Substantial damage NTSB MKC74FER59Accident · Serious injuriesClosedCallair A-9 · Stephen, MNJun 20, 1974 · N7238V · Substantial damage NTSB MKC74DER06Accident · Minor injuriesClosedCallair A-9 · Stephen, MNAug 20, 1973 · N8414V · Substantial damage NTSB MKC73DER49Accident · No injuriesClosedPiper PA-32 · Starbuck, MNApr 7, 1973 · N3364W · Substantial damage NTSB MKC73FER45Accident · No injuriesClosedPiper PA-24 · Grand Rapids, MNMar 25, 1973 · N5671P · Substantial damage NTSB MKC73DER13Accident · No injuriesClosedPiper PA-25 · Mapleton, MNAug 19, 1972 · N7217Z · Substantial damage NTSB MKC71FDD13Accident · No injuriesClosedPiper PA-25 · Humboldt, MNSep 18, 1970 · N7767Z · Substantial damage NTSB MKC70D0025Accident · No injuriesClosedPiper PA-24 · Dora Lake, MNJun 22, 1969 · N5186P · Substantial damage NTSB MKC67D0542Accident · No injuriesClosedPiper PA-32 · Albert Lea, MNMar 22, 1967 · N3805W · Substantial damage NTSB MKC66F0121Accident · No injuriesClosedPiper PA-24 · Dodge Center, MNApr 22, 1965 · N5186P · Substantial damage NTSB UNK65X0208Accident · No injuriesClosedPiper PA28 · Duluth, MNOct 9, 1964 · N8769W · Substantial damage NTSB UNK64X0624Accident · No injuriesClosedPiper PA23 · Alexandria, MNFeb 20, 1964 · N4743P · Substantial damage