# NTSB ANC88LA064: Cessna 206, N4571K, Chugiak, AK, June 2, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 1, 1988, 16:28 local (Jun 2, 1988, 00:28 UTC)
- Place: Chugiak, AK
- Coordinates: 61.409301, -149.169754 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.4093&lon=-149.1698&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 25, 1989
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5009
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88LA064
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5009/pdf
- Page: https://openairdocs.org/ntsb/ANC88LA064

## 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
  - directional control - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch

## Analysis

THE PILOT STATED THAT DURING THE LANDING ROLL HE LOST DIRECTIONAL CONTROL OF THE AIRCRAFT CAUSING THE AIRCRAFT TO EXIT THE LEFT SIDE OF THE RUNWAY INTO AN OPEN DITCH. THE AIRCRAFT TRAVELED APPROXIMATELY 1000 FEET OF THE RUNWAY.

## Aircraft

- Registration: [N4571K](https://openairdocs.org/deregistered/N4571K-2014-07-01), registration cancelled 2014-07-01, S/N U2060464, built 1965 (OpenAirDocs)
- Reported make and model: CESSNA 206
- Registry model: [Cessna U206A](https://openairdocs.org/model/cessna-u206a) (registry code 2073316) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U2060464
- Airframe hours: 1984
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Leo F. Leuenberger
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 29, 1987
- Departed: GKN, GULKANA, AK
- Airport: Z-15, Birchwood

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 17,630 total, 220 in this make and model, 17,600 as pilot in command, 10 in the last 90 days, 7 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 4 knots
- Visibility: 25 statute miles
- Lowest ceiling: 10,000 ft overcast
- Temperature: 59 °F, dew point 36 °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 19880601017599A](https://openairdocs.org/incident/19880601017599A), Jun 1, 1988: Cessna 206CESSNA, Chugiak, AK, Substantial damage. Lost directional control on landing. Ran off the runway into a dirt bank.

## Other investigations on N4571K (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 ANC13CA052](https://openairdocs.org/ntsb/ANC13CA052), May 31, 2013: Cessna U206A (N4571K), Fairbanks, AK, substantial damage. Probable cause: The pilot’s inadequate flare, which resulted in a nose-low impact with glassy water and a subsequent nose-over.

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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