# NTSB SEA87FA180: Cessna U206G II, N756PS, Yakutat, AK, September 2, 1987

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: September 2, 1987, 12:30 local (20:30 UTC)
- Place: Yakutat, AK
- Coordinates: 59.510742, -139.709625 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=59.5107&lon=-139.7096&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report October 7, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 40536
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87FA180
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40536/pdf
- Page: https://openairdocs.org/ntsb/SEA87FA180

## Analysis

ACFT WAS OBSERVED TO DEPART FROM CONTROLLED FLIGHT WHILE IN A STEEP LEFT TURN AT SLOW SPEED AND LOW ALTITUDE, IMPACTING ON A RIVER SAND BAR. FIRE ENSUED, DEMOLISHING ACFT. FOLLOWING HEAVY RAINS, RIVER ROSE AND ACFT NOT RECOVERED.

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - maneuver - excessive, pilot in command (cause)
  - airspeed(vs) - not maintained, pilot in command (cause)
  - stall/spin - inadvertent
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - sand bar

## Aircraft

- Registration: [N756PS](https://openairdocs.org/deregistered/N756PS-1989-03-02), registration cancelled 1989-03-02, S/N U20604253 (OpenAirDocs)
- Reported make and model: CESSNA U206G II
- Registry model: [Cessna U206G](https://openairdocs.org/model/cessna-u206g) (registry code 2073356) (OpenAirDocs)
- Category: Airplane
- Serial number: 4253
- Airframe hours: 1650
- Engines: Continental IO-520 300 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Mortense, Dan E.
- Registered owner: Mortensen, Dan E.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 15, 1987, 110 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 6,357 total, 3,500 in this make and model, 6,149 as pilot in command, 250 in the last 90 days, 100 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 70° at 5 knots
- Visibility: 40 statute miles
- Lowest ceiling: 5,000 ft broken
- Temperature: 54 °F, dew point 46 °F
- Altimeter: 30.00 inHg
- Observed at: YAK, 26 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 19870902080039A](https://openairdocs.org/incident/19870902080039A), Sep 2, 1987: Cessna U206G, Yakutat, AK, Destroyed, 1 fatal. Stalled in a steep turn while maneuvering for landing on a sandbar. Aircraft was demolished by impact and post fire

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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