Ongoing NTSB investigations: Lycoming TI0-540 series

6 cases on aircraft whose registry engine model is Lycoming TI0-540 series, where the defining event was Loss of engine power (total). 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

20252026

Ongoing NTSB investigations: Lycoming TI0-540 series per year, 2025–2026: 6 cases
2025	3
2026	3

Where

Open the map

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."completionStatus" = 'Ongoing' 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') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '341')) 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.\"completionStatus\" = 'Ongoing'
    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')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '341'))
  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."completionStatus" = 'Ongoing'
  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')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '341'))
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 CEN26LA269Accident · No injuriesClass 3 · LimitedPreliminary reportAero Commander Callair A-9B · Livonia, MOOn July 27, 2026, about 0819 central daylight time, an Aero Commander Callair A-9B airplane, N7799V, was substantially damaged when it was involved in an accident near Livonia, Missouri. The pilot was not injured. The airplane was operated as a Title 14 Code…Jul 27, 2026 · N7799V · Substantial damage NTSB ANC26LA070Accident · Minor injuriesClass 3 · LimitedPreliminary reportMooney M20M · Tallahassee, FLOn July 8, 2026, at 1148 eastern daylight time, a Mooney M20 airplane was substantially damaged when it was involved in an accident near Tallahassee, Florida. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal…Jul 8, 2026 · N488AT · Substantial damage NTSB ERA26LA145Accident · Serious injuriesClass 3 · LimitedPreliminary reportRockwell International 114 · Whitmire, SCOn March 10, 2026, about 1915 eastern daylight time, a Rockwell International 114 airplane, N4832W, was substantially damaged when it was involved in an accident near Whitmire, South Carolina. The flight instructor received minor injuries. The pilot receiving…Mar 10, 2026 · N4832W · Substantial damage NTSB ERA26LA040Accident · Minor injuriesClass 3 · LimitedPreliminary reportPiper PA-32R-301T · Woodfin Mill, GAOn November 16, 2025, about 0845 eastern standard time, a Piper Pa-32R-301T, N327HP, was substantially damaged when it was involved in an accident near Woodfin Mill, Georgia. The commercial pilot sustained minor injuries. The airplane was operated as a Title…Nov 16, 2025 · N327HP · Substantial damage NTSB CEN25LA192Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA-32RT-300T · Tulsa, OKOn May 30, 2025, about 1627 central daylight time, a Piper PA-32RT-300T airplane, N130XR, was substantially damaged when it was involved in an accident near Tulsa, Oklahoma. The pilot sustained serious injuries, and the pilot-rated passenger sustained minor…May 30, 2025 · N130XR · Substantial damage NTSB CEN25LA175Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA 46-350P · Greenwood, INOn May 11, 2025, about 1231 central daylight time, a Piper PA46-350P, N253MA, sustained substantial damage when it was involved in an accident near Greenwood, Indiana. The pilot and passenger received serious injuries. The airplane was operated as a Title 14…May 11, 2025 · N253MA · Substantial damage