# NTSB investigations: Lycoming VO-540 series: Hard landing

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 ERA22LA118](https://openairdocs.org/ntsb/ERA22LA118.md): Hiller UH-12E4 · Shrewsbury, PA · Accident · No injuries · Class 4 · Limited · Final report · Feb 9, 2022 · N64741 · Substantial damage
  > The pilot’s failure to maintain control during the descent which resulted in a hard landing.
- [NTSB CEN15LA322](https://openairdocs.org/ntsb/CEN15LA322.md): Bell 47G 4A · Gilbert, IA · Accident · No injuries · Limited investigation · Final report · Jul 24, 2015 · N1396X · Substantial damage
  > The total loss of engine power due to fuel starvation because the available fuel shifted within the tanks due to an abrupt nose-low maneuver to avoid an obstacle, which resulted in a hard forced landing.
- [NTSB CEN11CA403](https://openairdocs.org/ntsb/CEN11CA403.md): Bell 47G-4A · Montgomery City, MO · Accident · No injuries · Data collection · Final report · Jun 18, 2011 · N24HM · Substantial damage
  > A loss of control during the precautionary landing, which resulted in inadvertent contact between the main rotor and the tailboom. Contributing to the accident was the overloaded condition.
- [NTSB WPR10LA117](https://openairdocs.org/ntsb/WPR10LA117.md): Bell 47G-4A · Shafter, CA · Accident · Minor injuries · Limited investigation · Final report · Jan 22, 2010 · N28938 · Substantial damage
  > The loss of a main rotor blade counterweight due to corrosion. Contributing to the accident was the failure of the operator to perform the initial and recurrent inspections required by a Service Bulletin to detect the corrosion in the counterweight.
- [NTSB WPR09CA008](https://openairdocs.org/ntsb/WPR09CA008.md): Bell 47J-2A · Florence, AZ · Accident · No injuries · Data collection · Final report · Oct 11, 2008 · N8567F · Substantial damage
  > The pilot’s inadequate compensation for a wind shift encountered during the landing approach, which resulted in a hard landing and rollover. Contributing to the accident was the encounter with the wind shift.

## 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 ('41534', '41582')
    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" = '092'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/092/cases?engine=41534

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