# NTSB investigations: Lycoming O-540-F1B5: Collision during takeoff/land

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.

## Latest cases

- [NTSB ANC26LA082](https://openairdocs.org/ntsb/ANC26LA082.md): Robinson Helicopter R44 · Macedonia, IA · Accident · Minor injuries · Class 4 · Limited · Investigation open · Aug 9, 2026 · N197HL · Substantial damage
- [NTSB CEN20CA313](https://openairdocs.org/ntsb/CEN20CA313.md): Robinson R44 · Dakota, IL · Accident · No injuries · Class 4 · Data collection · Final report · Jul 27, 2020 · N570WH · Substantial damage
  > The pilot’s failure to maintain main rotor clearance from a ground obstacle during a landing.
- [NTSB ERA20CA260](https://openairdocs.org/ntsb/ERA20CA260.md): Robinson R44 · Whitehall, MD · Accident · No injuries · Class 4 · Data collection · Final report · Jul 24, 2020 · N350DM · Substantial damage
  > The pilot's failure to maintain adequate clearance from a known obstacle while landing from a hover.
- [NTSB ERA14CA413](https://openairdocs.org/ntsb/ERA14CA413.md): Robinson Helicopter R44 · Hayesville, NC · Accident · No injuries · Data collection · Final report · Aug 17, 2014 · N752EC · Substantial damage
  > The pilot's failure to maintain control of the helicopter, and adequate clearance, which resulted in a collision with a hangar.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('42353')
    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" = '490'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/490/cases?engine=42353

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