# NTSB ANC85LA134: Cessna 206, N4649U, Kustatan River, AK, July 27, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 27, 1985, 13:50 local (21:50 UTC)
- Place: Kustatan River, AK
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4530
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85LA134
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4530/pdf
- Page: https://openairdocs.org/ntsb/ANC85LA134

## Sequence of events

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

- In flight collision with terrain/water, takeoff
  - planning/decision - improper, pilot in command (cause)
  - terrain condition - water,glassy
  - airspeed - not obtained, pilot in command (cause)
  - lift-off - premature, pilot in command (cause)
  - stall/mush - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, takeoff
  - terrain condition - wet (contributing factor)
  - terrain condition - high vegetation (contributing factor)
- Nose over, other

## Analysis

THE PLT REPORTED THAT HE WAS TAKING OFF FROM A RIVER/LAKE AREA WITH GLASSY WATER ON A HOT/SULTRY DAY. AFTER INITIAL LIFT-OFF, THE ACFT SETTLED & TOUCHED DOWN ON THE WATER, THEN LIFTED OFF AGAIN. IT FLEW BEYOND THE EDGE OF THE LAKE, THEN SETTLED & NOSED OVER IN A SWAMPY AREA WITH HIGH VEGETATION. NO PREIMPACT PART FAILURE OR MALFUNCTION WAS NOTED DURING THE INVESTIGATION.

## Aircraft

- Registration: [N4649U](https://openairdocs.org/aircraft/N4649U), registered now, S/N U20605028, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA 206
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U20605028
- Airframe hours: 1600
- Engines: CONTINENTAL IO-520 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Lynwood R. Marshall
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 7, 1985, 35 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 68; commercial; airplane ratings: single-engine sea, multi-engine land, single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 17,000 total, 16,182 as pilot in command, 35 in the last 90 days, 15 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 4 knots
- Visibility: 45 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 37 °F
- Altimeter: 29.00 inHg

## 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 19850727034349A](https://openairdocs.org/incident/19850727034349A), Jul 27, 1985: Cessna U206G, Kustatan River, AK, Substantial damage. Aircraft would not climb after liftoff from small lake with glassy water. Flipped over after settling in a swamp.

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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