# NTSB MKC84LA144: Enstrom F-28C, N51792, Louisville, NE, May 23, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 23, 1984, 17:15 local (22:15 UTC)
- Place: Louisville, NE
- Coordinates: 40.99002, -96.160148 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.9900&lon=-96.1601&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33686
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA144
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33686/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA144

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, hover
  - supervision - inadequate, pilot in command (cause)
  - proper altitude - not maintained, passenger (cause)
  - inadequate initial training, other crewmember
  - terrain condition - soft
- Roll over, hover

## Analysis

ACCORDING TO THE PLT, THE HELICOPTER WAS INVOLVED IN A GROUND SEARCH WITH A NON-TRAINED PAX IN THE RIGHT SEAT. WITH THE PAX FLYING THE ACFT IN A HOVER THE RIGHT SKID CONTACTED THE MUDDY TERRAIN CAUSING THE ACFT TO ROLL OVER.

## Aircraft

- Registration: [N51792](https://openairdocs.org/deregistered/N51792-2013-07-09), registration cancelled 2013-07-09, S/N 455-2 (OpenAirDocs)
- Reported make and model: ENSTROM F-28C
- Registry model: [Enstrom F-28C](https://openairdocs.org/model/enstrom-f-28c) (registry code 3300407) (OpenAirDocs)
- Category: Helicopter
- Serial number: 455-2
- Airframe hours: 1414
- Engines: LYCOMING HIO-360-E1AD 205 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Don'S Helicopter Service
- Airworthiness certificate: Standard, Normal
- Departed: GRETNA, NE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial, flight instructor; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 3,885 total, 3,885 in this make and model, 3,851 as pilot in command, 210 in the last 90 days, 148 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 15 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: OMA, 23 nm away

## 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 19840523018479A](https://openairdocs.org/incident/19840523018479A), May 23, 1984: Enstrm F28C, Louisville, NE, Substantial damage. Student was hovering helicopter near the ground when one skid struck the ground causing helicopter to roll over.

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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