# NTSB investigations: Robinson Helicopter R44 II, AZ

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 WPR21LA359](https://openairdocs.org/ntsb/WPR21LA359.md): Robinson Helicopter R44 II · Phoenix, AZ · Accident · Minor injuries · Class 4 · Limited · Final report · Sep 30, 2021 · N74706 · Substantial damage
  > The student pilot's failure to maintain helicopter control while making a clearing turn which resulted in a hard landing.
- [NTSB WPR21LA341](https://openairdocs.org/ntsb/WPR21LA341.md): Robinson R44 · Camp Verde, AZ · Accident · No injuries · Class 4 · Limited · Final report · Aug 28, 2021 · N544SH · Substantial damage
  > The pilot's inadequate preflight performance calculations which resulted in an aborted takeoff and collision with trees.
- [NTSB WPR13CA424](https://openairdocs.org/ntsb/WPR13CA424.md): Robinson R44 - II · Flagstaff, AZ · Accident · Minor injuries · Data collection · Final report · Sep 25, 2013 · N190SH · Substantial damage
  > The pilot's failure to maintain rotor rpm while landing in a gusty wind at a high density altitude.
- [NTSB WPR13CA064](https://openairdocs.org/ntsb/WPR13CA064.md): Robinson Helicopter R44 II · Roosevelt Lake, AZ · Accident · Serious injuries · Data collection · Final report · Dec 7, 2012 · N557AC · Substantial damage
  > The pilot's visual disorientation, which resulted in a collision with the lake.
- [NTSB WPR12LA267](https://openairdocs.org/ntsb/WPR12LA267.md): Robinson Helicopter R44 II · Scottsdale, AZ · Accident · Minor injuries · Limited investigation · Final report · Jun 17, 2012 · N808WH · Substantial damage
  > The flight instructor’s failure to maintain adequate rotor rpm during a practice autorotation, which resulted in a loss of helicopter control and subsequent hard landing.
- [NTSB WPR09CA224](https://openairdocs.org/ntsb/WPR09CA224.md): Robinson R44 · Cottonwood, AZ · Accident · No injuries · Data collection · Final report · May 3, 2009 · N441CB · Substantial damage
  > The pilot's inadequate visual lookout and failure to maintain clearance from wires.
- [NTSB LAX08CA057](https://openairdocs.org/ntsb/LAX08CA057.md): Robinson R44 II · Bullhead City, AZ · Accident · No injuries · Data collection · Final report · Feb 3, 2008 · N44NV · Substantial damage
  > The pilot's misjudged landing flare, inadequate bounced landing recovery, and failure to maintain directional control during a bounced landing that resulted in the tail rotor blades colliding with a hangar. Contributing to the accident was the burned out…
- [NTSB LAX06LA247](https://openairdocs.org/ntsb/LAX06LA247.md): Robinson R44 · Flagstaff, AZ · Accident · Minor injuries · Limited investigation · Final report · Jul 28, 2006 · N74780 · Substantial damage
  > the pilot's inadequate preflight planning decision to take off under a low ceiling into an area of mountainous terrain that resulted in an encounter with lowering clouds and forced the pilot to land in unfavorable terrain.
- [NTSB LAX03LA123](https://openairdocs.org/ntsb/LAX03LA123.md): Robinson R-44 II · Willcox, AZ · Accident · No injuries · Limited investigation · Final report · Apr 2, 2003 · N233TR · Substantial damage
  > The failure of the alternator belt which resulted in the failure of the main drive belt.

## 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" = 'AZ' 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 ('7640122', '7640123'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7640122&state=AZ

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