# NTSB MIA84LA089: Cessna P-210N, N731NJ, Key West, FL, February 21, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: February 21, 1984, 11:41 local (16:41 UTC)
- Place: Key West, FL
- Location: 24.5651° N, 81.7755° W: Placed by OpenAirDocs: center of Key West, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=24.5651&lon=-81.7755&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31086
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84LA089
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31086/pdf
- Page: https://openairdocs.org/ntsb/MIA84LA089

## Sequence of events

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

- Undetermined, unknown
  - weather condition - thunderstorm (contributing factor)
  - weather condition - icing conditions (contributing factor)
  - reason for occurrence undetermined (cause)

## Analysis

DURING HIS WX BRIEFING THE PLT WAS GIVEN THE FLIGHT PRECAUTIONS & ENROUTE FORECAST ALONG HIS PROPOSED ROUTE OF FLT. ENROUTE AT 14,000 FT THE PLT ADVISED ARTCC THAT THE FLT HAD ENCOUNTERED RIME ICE. THE CONTROLLER CLEARED THE FLT TO DESCEND TO 12,000 FT & THE ACFT DISAPPEARED FROM RADAR DURING THE DESCENT. ON 2/22 AN OIL SLICK WAS SIGHTED IN THE AREA WHERE IT WAS BELIEVED THAT THE ACFT CRASHED. DEBRIS WAS FOUND FLOATING IN THE WATER WHICH IS BELIEVED TO HAVE COME FROM THE ACFT WRECKAGE. THE ACFT IS PRESUMED TO BE LOST AT SEA & THE INJURIES ARE PRESUMED. SIGMET PAPA-2, FORECASTING THUNDERSTORMS WITH CUMULUNIMBUS CLOUDS WITH TOPS UP TO 45,000 FT WAS ISSUED AT 0800 & WAS IN EFFECT UNTIL 1200 FOR THE AREA OF THE ACFT DISAPPEARANCE.

## Aircraft

- Registration: [N731NJ](https://openairdocs.org/deregistered/N731NJ-2013-07-08), registration cancelled 2013-07-08, S/N P21000505, built 1980 (OpenAirDocs)
- Reported make and model: CESSNA P-210N
- Registry model: [Cessna P210N](https://openairdocs.org/model/cessna-p210n) (registry code 2073454) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: P210N0050
- Airframe hours: 668
- Engines: CONTINENTAL TSIO-520P 310 horsepower reciprocating
- Damage: Destroyed
- Fire: In-Flight
- Flight: Personal, Part 91
- Registered owner: Joseph E. Hannon
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 13, 1983, 64 hours before
- Departed: EYE, KEY WEST, FL
- Destination: MEI, MERIDIAN, MS
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 65; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; flight hours: 642 total, 192 in this make and model, 79 in the last 90 days

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 360° at 13 knots, gusting 13
- Visibility: 1 statute miles
- Lowest ceiling: 500 ft overcast
- Temperature: 68 °F, dew point 61 °F
- Altimeter: 29.00 inHg
- Observed at: EYW, 60 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 19840221003799A](https://openairdocs.org/incident/19840221003799A), Feb 21, 1984: Cessna P210N, Ft Myers, FL, Destroyed, 1 fatal. Aircraft disappeared from radar after requesting lower altitude because of airframe icing.

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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