# NTSB MIA86LA147: Hughes 269C, N8993F, Jacksonville, FL, May 4, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 4, 1986, 17:45 local (21:45 UTC)
- Place: Jacksonville, FL
- Coordinates: 30.359243, -81.50949 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.3592&lon=-81.5095&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31622
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA86LA147
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31622/pdf
- Page: https://openairdocs.org/ntsb/MIA86LA147

## Sequence of events

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

- Roll over, standing - engine(s) operating
  - fuselage - vibration (cause)
  - emergency procedure - not performed, pilot in command (cause)
- Propeller/rotor contact to person, standing - engine(s) operating

## Analysis

THE PLT STATED THAT AS HE WAS LANDING ON A DOLLY, THE HELICOPTER EXPERIENCED GROUND RESONANCE & BEGAN TO SHAKE VIOLENTLY. IT THEN ROLLED OVER ON ITS SIDE, CAUSING THE MAIN ROTOR BLADES TO STRIKE THE TAIL BOOM & THE GROUND.

## Aircraft

- Registration: [N8993F](https://openairdocs.org/deregistered/N8993F-2013-05-17), registration cancelled 2013-05-17, S/N 830227, built 1973 (OpenAirDocs)
- Reported make and model: HUGHES 269C
- Registry model: [Hughes 269C](https://openairdocs.org/model/hughes-269c) (registry code 4470504) (OpenAirDocs)
- Registry engine: [Lycoming HO-360 series](https://openairdocs.org/engine/lycoming-ho-360-series) (registry code 41513, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 830227
- Airframe hours: 4980
- Engines: LYCOMING HIO-360-D1A 190 horsepower reciprocating
- Damage: Substantial damage
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: Helicopter Serv. Of Jacksonvil
- Airworthiness certificate: Standard, Utility
- Last inspection: 100 hour, August 28, 1985, 80 hours before
- Departed: 55J, FERNANDINA BCH, FL
- Airport: CRG, Craig Municipal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial, airline transport, flight instructor; airplane ratings: multi-engine land; instrument ratings: airplane, helicopter; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,207 total, 482 in this make and model, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 80° at 10 knots
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 70 °F, dew point 59 °F
- Altimeter: 30.00 inHg
- Observed at: CRG

## 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 19860504044629A](https://openairdocs.org/incident/19860504044629A), May 4, 1986: Hughes 269C, Jacksonville, FL, Substantial damage. Touching skids while landing on a dolly caused ground resonance and control loss. Helicopter rolled on its side.

## Other investigations on N8993F (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 MIA85LA048](https://openairdocs.org/ntsb/MIA85LA048), Nov 29, 1984: Hughes 269C (N8993F), Jacksonville, FL, substantial damage

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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