# NTSB investigations: Robinson Helicopter R22: 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 WPR23LA191](https://openairdocs.org/ntsb/WPR23LA191.md): Robinson Helicopter R22 · Spanish Fork, UT · Accident · No injuries · Class 4 · Limited · Final report · May 15, 2023 · N227WM · Substantial damage
  > The instructor pilot’s improper landing flare during a straight-in autorotation, which resulted in a hard landing.
- [NTSB WPR20CA140](https://openairdocs.org/ntsb/WPR20CA140.md): Robinson R22 · Caldwell, ID · Accident · No injuries · Data collection · Final report · Apr 22, 2020 · N6703S · Substantial damage
  > The flight instructor's failure to set the proper rotor rpm during a practice autorotation, which led to his failure to maintain a proper descent rate and resulted in a hard, bounced landing.
- [NTSB WPR18LA041](https://openairdocs.org/ntsb/WPR18LA041.md): Robinson Helicopter R22 · Truckee, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 30, 2017 · N47WH · Substantial damage
  > The flight instructor’s failure to execute a power recovery from a non-stabilized autorotative descent, which resulted in a hard landing.
- [NTSB GAA17CA434](https://openairdocs.org/ntsb/GAA17CA434.md): Robinson Helicopter R22 · Bozeman, MT · Accident · No injuries · Data collection · Final report · Jul 21, 2017 · N28VH · Substantial damage
  > The flight instructor’s unstabilized autorotation, which resulted in a hard landing.
- [NTSB ERA17LA046](https://openairdocs.org/ntsb/ERA17LA046.md): Robinson Helicopter R22 · West Chester, PA · Accident · No injuries · Limited investigation · Final report · Nov 15, 2016 · N306RL · Substantial damage
  > The flight instructor's decision to continue the practice autorotation in known gusting wind conditions, which resulted in a hard landing and roll over.
- [NTSB ERA16LA055](https://openairdocs.org/ntsb/ERA16LA055.md): Robinson R22 · Venice, FL · Accident · Serious injuries · Limited investigation · Final report · Dec 1, 2015 · N8560M · Substantial damage
  > The flight instructor's failure to maintain control of the helicopter during an autorotation, which resulted in a hard landing.
- [NTSB ERA13LA045](https://openairdocs.org/ntsb/ERA13LA045.md): Robinson Helicopter R22 · Alexander City, AL · Accident · Serious injuries · Limited investigation · Final report · Nov 1, 2012 · N231TM · Substantial damage
  > The pilot’s delayed decision to initiate an autorotation and her subsequent improper conduct of the autorotation, which resulted in a hard landing, after the helicopter started vibrating for reasons that could not be determined because postaccident…
- [NTSB WPR12CA307](https://openairdocs.org/ntsb/WPR12CA307.md): Robinson Helicopter R22 · Bountiful, UT · Accident · No injuries · Data collection · Final report · Jul 16, 2012 · N47WH · Substantial damage
  > The student’s failure to maintain adequate rotor rpm and the flight instructor’s delayed remedial action, which resulted in a hard landing.
- [NTSB WPR09CA448](https://openairdocs.org/ntsb/WPR09CA448.md): Robinson Helicopter R22 · Irvine, CA · Accident · No injuries · Data collection · Final report · Sep 15, 2009 · N796SH · Substantial damage
  > The flight instructor's failure to maintain an adequate airspeed and his delayed recovery action during the practice autorotation, which resulted in a hard landing.

## 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.aircraft_model_code IN ('7640102')
    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?model=7640102

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