# NTSB ANC86LA133: Cessna U206, N39269, Kamishak Bay, AK, August 20, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 20, 1986, 08:15 local (16:15 UTC)
- Place: Kamishak Bay, AK
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (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): 4720
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC86LA133
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4720/pdf
- Page: https://openairdocs.org/ntsb/ANC86LA133

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - terrain condition - rough/uneven (cause)
  - in-flight planning/decision - inadequate, pilot in command (cause)
  - improper use of procedure, pilot in command (contributing factor)
  - wind information - not obtained, pilot in command (cause)
  - aircraft handling - not maintained, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)

## Analysis

AFTER TOUCHDOWN IN THE BAY, THE PILOT LOST DIRECTIONAL CONTROL OF THE AIRCRAFT CAUSING THE AIRCRAFT TO NOSE OVER ON ITS BACK IN THE WATER.

## Aircraft

- Registration: N39269 (not matched to a registry record)
- Reported make and model: CESSNA U206
- Category: Airplane
- Serial number: U20605781
- Airframe hours: 2026
- Engines: CONTINENTAL IO-520F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Timothy J. Laporte, doing business as Iliamna Air Taxi, Inc.
- Airworthiness certificate: Standard, Utility
- Last inspection: 100 hour, December 30, 1985, 32 hours before
- Departed: ILI, ILIAMNA, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; airline transport; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 9,642 total, 3,000 in this make and model, 9,490 as pilot in command, 151 in the last 90 days, 75 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 39 °F
- Altimeter: 30.00 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 19860820043959A](https://openairdocs.org/incident/19860820043959A), Aug 20, 1986: Cessna U206G, Kamishak Bay, AK, Substantial damage. Floats hit sand bottom during landing and aircraft flipped over in the water.

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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