# NTSB investigations: Robinson Helicopter R22, UT

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 WPR13LA315](https://openairdocs.org/ntsb/WPR13LA315.md): Robinson Helicopter R22 · Alta, UT · Accident · Minor injuries · Limited investigation · Final report · Jul 8, 2013 · N712U · Destroyed
  > The flight instructor's decision to follow a route over mountainous terrain in conditions that exceeded the helicopter’s ability to maintain terrain clearance.
- [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 SEA07CA171](https://openairdocs.org/ntsb/SEA07CA171.md): Robinson R22 Beta II · Park City, UT · Accident · No injuries · Data collection · Final report · Jun 18, 2007 · N712U · Substantial damage
  > The pilot's failure to maintain rotor RPM during hover taxi. A contributing factor was the high density altitude weather condition.
- [NTSB DEN05LA036](https://openairdocs.org/ntsb/DEN05LA036.md): Robinson R22 · Provo, UT · Accident · Minor injuries · Limited investigation · Final report · Dec 15, 2004 · N333UH · Substantial damage
  > the flight instructor's failure to maintain clearance from the water. Contributing to the accident was the flight instructor's inability to detect a descent because of the obscuration between the water and the horizon due to the gray sky
- [NTSB DEN04LA142](https://openairdocs.org/ntsb/DEN04LA142.md): Robinson R22 · Spanish Fork, UT · Accident · Minor injuries · Limited investigation · Final report · Sep 14, 2004 · N777UH · Substantial damage
  > the instructor's premature flare, resulting in a hard landing, and his failure to align the helicopter with the direction of travel, resulting in a rollover.Contributing factors were the low rotor RPM and inadequate airspeed. The reason for the loss of engine…
- [NTSB DEN04CA061](https://openairdocs.org/ntsb/DEN04CA061.md): Robinson R22 · Nephi, UT · Accident · No injuries · Data collection · Final report · Apr 14, 2004 · N555UH · Substantial damage
  > the flight instructor's failure to maintain control of the helicopter resulting 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."eventStateOrRegion" = 'UT' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640102'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7640102&state=UT

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