# NTSB investigations: Robinson Helicopter R22 BETA: Abnormal runway contact

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 GAA16CA530](https://openairdocs.org/ntsb/GAA16CA530.md): Robinson R22 · Taylor, TX · Accident · No injuries · Data collection · Final report · Feb 5, 2016 · N1777V · Substantial damage
  > The flight instructor's improper collective input during a simulated engine failure autorotation with a power recovery, which resulted in a hard, bounced landing and the main rotor blade striking the tailboom.
- [NTSB GAA15CA200](https://openairdocs.org/ntsb/GAA15CA200.md): Robinson Helicopter R-22 · Corona, CA · Accident · No injuries · Data collection · Final report · Jul 23, 2015 · N520NS · Substantial damage
  > The flight instructor's delayed remedial action to arrest the descent rate, which resulted in a running landing, the left skid catching rough terrain, and the main rotor blades impacting the ground.
- [NTSB WPR13CA068](https://openairdocs.org/ntsb/WPR13CA068.md): Robinson R22 · Logan, UT · Accident · No injuries · Data collection · Final report · Dec 15, 2012 · N393LE · Substantial damage
  > The flight instructor’s delayed remedial action and inadequate supervision during a practice autorotation, which resulted in a failure to maintain adequate main rotor rpm. Contributing to the accident was the wet landing surface.
- [NTSB ANC12CA111](https://openairdocs.org/ntsb/ANC12CA111.md): Robinson Helicopter R22 Beta II · Anchorage, AK · Accident · No injuries · Data collection · Final report · Sep 26, 2012 · N4171J · Substantial damage
  > The flight instructor's inadequate supervision of the student pilot during a hovering autorotation, which resulted in a dynamic rollover.
- [NTSB DFW08CA075](https://openairdocs.org/ntsb/DFW08CA075.md): Robinson R-22 · Meraux, LA · Accident · No injuries · Data collection · Final report · Mar 4, 2008 · N120KC · Substantial damage
  > The pilot's failure to ensure calculate weight and balance prior to flight. A contributing factor was the prevailing gusty winds.

## 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 ('7640110', '7640103')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '090' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/090/sequence?model=7640110

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