# NTSB MIA86LA031: Enstrom F-28F, N86229, Miami, FL, November 22, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 22, 1985, 09:15 local (14:15 UTC)
- Place: Miami, FL
- Coordinates: 25.650058, -80.4095 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=25.6501&lon=-80.4095&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31548
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA86LA031
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31548/pdf
- Page: https://openairdocs.org/ntsb/MIA86LA031

## Sequence of events

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

- Loss of engine power, cruise - normal
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
  - terrain condition - none suitable
- Roll over, landing - roll
  - terrain condition - rough/uneven
  - run on landing - attempted, pilot in command

## Analysis

THE PLT STATED HE FELT THE ENG RPM DECREASE, SO HE OPENED UP THE THROTTLE AND LOWERED THE COLLECTIVE. WHEN THESE ACTIONSDID NOT PRODUCE THE DESIRED RPM HE TRIED TO LAND IN A PLOWED FLD, THE SKIDS DUG IN THE SOFT DIRT AND CAUSED THE HELICOPTER TO ROLL OVER. EXAMINATION OF THE ENG DISCLOSED NO EVIDENCE OF A PRE-IMPACT MALFUNCTION OF FAILURE. HOWEVER, THE ROTOR SYSTEM WAS NOT CHECKED. NO DETERMINATION WAS MADE AS TO THE REASON FOR THE LOSS OF RPM.

## Aircraft

- Registration: N86229 (not matched to a registry record)
- Reported make and model: ENSTROM F-28F
- Category: Helicopter
- Serial number: 723
- Airframe hours: 1293
- Engines: LYCOMING HIO-360-F1AD 225 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Alfred M. Gore
- Registered owner: Burnside-Ott Aviation Training
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, October 10, 1985, 93 hours before
- Departed: TMB

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 9,695 total, 24 in this make and model, 6,718 as pilot in command, 24 in the last 90 days, 24 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 12 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 72 °F
- Altimeter: 30.00 inHg
- Observed at: MIA, 3 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 19851122057979A](https://openairdocs.org/incident/19851122057979A), Nov 22, 1985: Enstrm F28F, Miami, FL, Substantial damage. Aircraft rolled over during run in landing in field. RPM decreased in flight. Cause undetermined.

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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