# NTSB ANC84LA057: Cessna 180, N4747U, Anchorage, AK, April 15, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 15, 1984, 13:30 local (17:30 UTC)
- Place: Anchorage, AK
- Coordinates: 61.219821, -149.850112 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2198&lon=-149.8501&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor, 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4282
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC84LA057
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4282/pdf
- Page: https://openairdocs.org/ntsb/ANC84LA057

## Sequence of events

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

- In flight encounter with weather, cruise - normal
  - weather condition - clouds (contributing factor)
  - weather condition - low ceiling (contributing factor)
  - weather condition - snow (contributing factor)
  - weather condition - whiteout (contributing factor)
  - vfr flight into imc - continued, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - precautionary landing - delayed, pilot in command (cause)
  - terrain condition - sand bar (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command
- Nose over, landing - roll

## Analysis

THE PLT ENCOUNTERED IMC WX CONDITIONS & ELECTED TO MAKE A WATER LANDING. ALSO, HE STATED THAT HE ENCOUNTERED A WHITE-OUT CONDITION JUST PRIOR TO LANDING. SHORTLY AFTER TOUCHING DOWN, THE ACFT STRUCK A SAND BAR & NOSED OVER.

## Aircraft

- Registration: [N4747U](https://openairdocs.org/deregistered/N4747U-2012-12-13), registration cancelled 2012-12-13, S/N 18051447, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 180
- Registry model: [Cessna 180H](https://openairdocs.org/model/cessna-180h) (registry code 2072618) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18051447
- Airframe hours: 6000
- Engines: CONTINENTAL O-470-R 230 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Roger Murphy
- Registered owner: Marlena P. Burns
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 3, 1983, 130 hours before
- Departed: MONTAGUE I'S, AK
- Destination: ENA, KENAI, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine sea, single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 2,000 total, 2,000 in this make and model, 2,000 as pilot in command, 42 in the last 90 days, 20 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 260° at 15 knots, gusting 25
- Lowest ceiling: 50 ft
- Temperature: 23 °F, dew point 19 °F
- Observed at: ANC, 10 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 19840415013779A](https://openairdocs.org/incident/19840415013779A), Apr 15, 1984: Cessna 180H, Anchorage, AK, Destroyed. Encountered white out. Elected for a water landing near a shoreline. Struck a sandbar and nosed over.

## Other investigations on N4747U (1)

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.

- [NTSB ANC72AA045](https://openairdocs.org/ntsb/ANC72AA045), May 9, 1972: Cessna 180H (N4747U), Kenai, AK, substantial damage

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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