# NTSB FTW86FA115: Cessna P206C, N8621Z, Grand Chenier, LA, June 16, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 16, 1986, 18:00 local (23:00 UTC)
- Place: Grand Chenier, LA
- Coordinates: 29.759656, -92.969596 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.7597&lon=-92.9696&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): 21911
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86FA115
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21911/pdf
- Page: https://openairdocs.org/ntsb/FTW86FA115

## Analysis

THE AIRCRAFT IMPACTED THE MARSHY TERRAIN WHILE IN A VERY SHALLOW DESCENT AND WINGS LEVEL ATTITUDE AND AT A RELATIVELY HIGH SPEED (I.E.,CRUISE). IT THEN CARTWHEELED AND SLID TO A STOP. THERE WAS EVIDENCE OF SUBSTANTIAL ENGINE POWER BEING DEVELOPED AT IMPACT. EXTENDED RANGE FUEL TANKS HAD BEEN ADDED TO THE WING TIPS ALONG WITH AN IN-CABIN TANK FOR AN EXTRA FUEL CAPACITY OF 75-80 GALLONS. ALL TANKS APPARENTLY HAD BEEN FILLED. THE POINTS OF DEPARTURE AND INTENDED LANDING ALONG WITH THE TIME OF THE ACCIDENT, ARE UNKNOWN. THE AIRCRAFT WAS LOADED WITH CONTRABAND CARGO. THE AUTOPILOT 'ALTITUDE HOLD' WAS ENGAGED. NO RADAR TRACK OF THE AIRCRAFT WAS FOUND, PROBABLY DUE TO LOW ALTITUDE FLIGHT. THE AIRCRAFT MOST PROBABLY DESCENDED DUE TO A BAROMETRIC PRESSURE CHANGE WHILE THE PILOT WAS ASLEEP OR INATTENTIVE AND IMPACTED THE TERRAIN.

## Sequence of events

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

- In flight collision with terrain/water, descent - normal
  - altitude - not maintained, pilot in command (cause)
  - in-flight planning/decision - inadequate, pilot in command (cause)
  - visual lookout - inadequate, pilot in command (cause)
  - flt with inadqt en route/destn facilities - performed, pilot in command (cause)

## Aircraft

- Registration: [N8621Z](https://openairdocs.org/deregistered/N8621Z-2013-05-15), registration cancelled 2013-05-15, S/N P206-0421, built 1967 (OpenAirDocs)
- Reported make and model: CESSNA P206C
- Registry model: [Cessna P206C](https://openairdocs.org/model/cessna-p206c) (registry code 2073312) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: P206-0421
- Engines: CONTINENTAL IO-520-A 285 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Billy H. Tucker
- Airworthiness certificate: Standard, Normal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, expired; seat: left; toxicology performed; flight hours: 16,000 total

## Weather

- Conditions: Not reported

## 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 19860616025369A](https://openairdocs.org/incident/19860616025369A), Jun 16, 1986: Cessna P206C, Grand Chenier, LA, Destroyed. Aircraft flew into the ground. Marajuana found on board. Medication and alcohol may have caused pilot to fall asleep.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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