# Accident 19910809033109A: Bell 47G3B1, Minneapolis, MN, August 9, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 9, 1991, 07:50 local time
- Place: Minneapolis, MN
- Airport: Crystal Airport
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: Agricultural (Part 137)
- Operator: CUHG
- Location: 45.1305° N, 93.4503° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=45.1305&lon=-93.4503&mi=10
- Aircraft: N73998, registered now (https://openairdocs.org/aircraft/N73998) (OpenAirDocs)
- Registry model: Bell 47G-3B-1 (registry code 1181028, https://openairdocs.org/model/bell-47g-3b-1) (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Reported engine: ALLSN 250C18C
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 1,522 total, 1,142 in this make and model, 144 in the last 90 days
- NTSB investigation: [NTSB CHI91DER13](https://openairdocs.org/ntsb/CHI91DER13) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910809033109A

## Narrative

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

LOW ROTOR RPM AND REPORTED POWER LOSS. RIGHT CYCLIC NEEDED TO LEVEL. ROLLED LANDING. LEFT HOPPER LOAD RIGHT EMPTY.

## 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 CHI91DER13](https://openairdocs.org/ntsb/CHI91DER13), Aug 9, 1991: Bell 47G-3B-1 (N73998), Maple Grove, MN, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE HELICOPTER DURING THE FORCED LANDING. RELATED FACTORS ARE THE LOSS OF ENGINE POWER, LOSS OF ROTOR RPM, THE ERODED COMPRESSOR BLADES, THE…

## Other reports on N73998 (3)

Matched to the same aircraft by N-number and date.

- [Accident 19940610015119A](https://openairdocs.org/incident/19940610015119A), Jun 10, 1994: Bell 47G3B1 (N73998), Medina, MN, Substantial damage. Hit powerline with main rotor.
- [Accident 19790706016429A](https://openairdocs.org/incident/19790706016429A), Jul 6, 1979: Bell 47G (N73998), Socorro, NM, Substantial damage. Made hard landing. No engine malfunction found. Possible factors, inexperience and density altitude.
- [Accident 19750723022859A](https://openairdocs.org/incident/19750723022859A), Jul 23, 1975: Bell 47G3B1 (N73998), Belen, NM, Substantial damage. Weld previously cracked,skid collapsed.m/r severed tailboom.

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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