# NTSB DEN90T#A01: MBB BO-105S, N7EG, Mercury, NV, October 2, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 3 · Final report
- Date: October 1, 1989, 22:50 local (Oct 2, 1989, 05:50 UTC)
- Place: Mercury, NV
- Location: 36.6605° N, 115.9945° W: Placed by OpenAirDocs: center of Mercury, NV, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.6605&lon=-115.9945&mi=10
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Investigation class: Class 3
- NTSB case key (mKey): 17997
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90T#A01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17997/pdf
- Page: https://openairdocs.org/ntsb/DEN90T%23A01

## Aircraft

- Registration: [N7EG](https://openairdocs.org/deregistered/N7EG-2017-06-14), registration cancelled 2017-06-14, S/N S-604, built 1982 (OpenAirDocs)
- Reported make and model: MBB BO-105S
- Registry model: [Messerschmitt-Boelkow-Blohm BO-105S](https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s) (registry code 5626006) (OpenAirDocs)
- Registry engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Serial number: S-604
- Damage: Substantial damage
- Fire: Unknown
- Flight: Public aircraft, Public use
- Operator: Edgerton Germeshausen Grier, doing business as Eg And G
- Registered owner: US Department Of Energy
- Departed: AREA 25, NV

## Weather

- Conditions: Night/dark

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19891001064969A](https://openairdocs.org/incident/19891001064969A), Oct 1, 1989: Bolkms BO105S, Mercury, NV, Substantial damage. External night lighting system on belly of helicopter hit ground during low hover over dry lake testing equipment.

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.

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