# Accident 19901020046509A: Bell 47G, Grand Prairie, TX, October 20, 1990

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 20, 1990, 17:05 local time
- Place: Grand Prairie, TX
- Airport: Grand Prairie Municipal Airport
- Damage: Substantial damage
- Phase of flight: Aerial Taxi, Other Helicopter
- Operating rules: General operating rules (Part 91)
- Location: 32.7293° N, 97.0006° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=32.7293&lon=-97.0006&mi=10
- Aircraft: N1071Z, a cancelled registration (https://openairdocs.org/deregistered/N1071Z-2002-08-08) (OpenAirDocs)
- Registry model: Bell 47G (registry code 1181002, https://openairdocs.org/model/bell-47g) (OpenAirDocs)
- Registry engine: Franklin 6VS-335 series (registry code 27040, https://openairdocs.org/engine/franklin-6vs-335-series) (OpenAirDocs)
- Reported make and model: BELL 47G
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 8,000 total, 4,000 in this make and model, 100 in the last 90 days
- NTSB investigation: [NTSB FTW91LA007](https://openairdocs.org/ntsb/FTW91LA007) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19901020046509A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

WHILE HOVER TAXIING IN GUSTY SURFACE WIND ROTOR SPEED DECAYED. ELECTED TO LAND ON UNEVEN GROUND. ROLLED OVER.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW91LA007](https://openairdocs.org/ntsb/FTW91LA007), Oct 20, 1990: Bell 47G (N1071Z), Grand Prairie, TX, substantial damage. Probable cause: THE PILOT'S INADEQUATE COMPENSATION FOR THE EXISTING TAILWIND CONDITIONS AND HIS FAILURE TO MAINTAIN ROTOR RPM.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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