# NTSB FTW84FA237: Beech G35, N4239D, Tulsa, OK, May 20, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: May 20, 1984, 15:15 local (20:15 UTC)
- Place: Tulsa, OK
- Coordinates: 36.149543, -95.899246 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.1495&lon=-95.8992&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21121
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84FA237
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21121/pdf
- Page: https://openairdocs.org/ntsb/FTW84FA237

## Sequence of events

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

- Undetermined, climb - to cruise
  - precautionary landing - attempted, pilot in command (contributing factor)
  - power on landing - attempted, pilot in command (contributing factor)
  - go-around - attempted, pilot in command (cause)
- In flight collision with object, go-around (vfr)
  - object - wire,static (cause)
  - clearance - not attained, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

A WITNESS STATED IT APPEARED AS THOUGH THE PLT WAS ATTEMPTING TO PERFORM A PRECAUTIONARY LANDING ON A HIGHWAY. AS THE ACFT REACHED THE HIGHWAY, THE WITNESS HEARD THE ENGINE ACCELERATE TO 'FULL POWER' AND SAW THE ACFT PULL UP. THE ACFT CONTACTED THE TOP STATIC WIRE OF A 125 FT HIGH POWER LINE LOCATED APRX 100 YARDS WEST OF THE HIGHWAY. THE ACFT TUMBLED AND IMPACTED IN AN OPEN FIELD 588 FT FROM THE POINT OF WIRE IMPACT. NO MECHANICAL FAILURES/MALFUNCTIONS WERE FOUND DURING THE INVESTIGATION. AUTOPSY REVEALED EVIDENCE THAT THE PLT HAD SUFFERED A SUBENDOCARDIAL MYOCARDICAL INFRACTION SOME TIME BEFORE THE ACCIDENT. IT ALSO REVEALED SEVERE CARDIOVASCULAR AND CORONARY DISEASE WITH VESSEL WALL OCCLUSION OF UP TO 90%.

## Aircraft

- Registration: [N4239D](https://openairdocs.org/deregistered/N4239D-2013-03-11), registration cancelled 2013-03-11, S/N D-4452, built 1956 (OpenAirDocs)
- Reported make and model: BEECH G35
- Registry model: [Beech G35](https://openairdocs.org/model/beech-g35) (registry code 1151516) (OpenAirDocs)
- Registry engine: [Continental E225 series](https://openairdocs.org/engine/continental-e225-series) (registry code 17015, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: D4452
- Airframe hours: 4011
- Engines: CONTINENTAL E-225-8 225 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: Clifford L. Jones
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 14, 1984, 1 hours before
- Departed: TUL, TULSA, OK
- Destination: TUL, TULSA, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 71; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 2,787 total, 62 in this make and model, 2,600 as pilot in command, 3 in the last 90 days, 1 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 10° at 6 knots
- Visibility: 7 statute miles
- Lowest ceiling: 1,400 ft broken
- Temperature: 73 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: TUL, 12 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 19840520061619A](https://openairdocs.org/incident/19840520061619A), May 20, 1984: Beech G35, Tulsa, OK, Destroyed. Observed trying to land on a highway. Struck power lines. Indicates pilot illness from servere artery disease.

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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