# NTSB investigations: Bell 47G-3B-1: 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 FTW04CA207](https://openairdocs.org/ntsb/FTW04CA207.md): Bell 47G-3B-1 · Troy, TX · Accident · No injuries · Data collection · Final report · Aug 5, 2004 · N47713 · Substantial damage
  > The flight instructor's improper flare, resulting in a hard landing. A contributing factor was the high density altitude.
- [NTSB DEN04LA047](https://openairdocs.org/ntsb/DEN04LA047.md): Bell 47G-3B-1 · Kremmling, CO · Accident · No injuries · Limited investigation · Final report · Feb 13, 2004 · N83702 · Substantial damage
  > the pilot's failure to attain landing flare and maintain adequate rotor rpm.
- [NTSB SEA94LA042](https://openairdocs.org/ntsb/SEA94LA042.md): Bell 47G3B1 · Mesa, WA · Accident · No injuries · Limited investigation · Final report · Nov 15, 1993 · N1181W · Substantial damage
  > The pilot's improper flare. Factors include excessive airspeed while approaching the flare.
- [NTSB DEN87LA019](https://openairdocs.org/ntsb/DEN87LA019.md): Bell 47G-3B-1 · Goshen, UT · Accident · No injuries · Limited investigation · Final report · Nov 10, 1986 · N47042 · Substantial damage
  > The plt was practicing power recovery autorotations then attempted one power off, full stop. The plt allowed the main rotor RPM to decay during approach and took no corrective action. The acft landed hard with slight forward motion and the plt applied aft…
- [NTSB SEA85LA174](https://openairdocs.org/ntsb/SEA85LA174.md): Bell 47G-3B-1 · Lebanon, OR · Accident · No injuries · Limited investigation · Final report · Jul 19, 1985 · N9417A · Substantial damage
  > The plt stated he performed 4 circling approaches over a sand bar and on the 5th approcah, rotor RPM decayed. Unable to regain the RPM, a hard landing resulted during which the main rotor blades severed the tailrotor.

## 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 ('1181028', '118103A')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 200))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1181028&occurrence=200

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