# NTSB ANC86LA106: Cessna 207, N1704U, Ekuk, AK, July 14, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 14, 1986, 10:30 local (18:30 UTC)
- Place: Ekuk, AK
- Coordinates: 58.81985, -157.859054 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=58.8199&lon=-157.8591&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4700
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC86LA106
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4700/pdf
- Page: https://openairdocs.org/ntsb/ANC86LA106

## Sequence of events

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

- In flight collision with object, landing
  - object - tree(s) (contributing factor)
  - planned approach - misjudged, pilot in command (cause)
  - airspeed - not maintained, pilot in command (cause)
  - proper altitude - not attained, pilot in command (cause)
- Loss of control - in flight, landing
- In flight collision with terrain/water, landing

## Analysis

THE PILOT STATED THAT DURING THE APPROACH TO LANDING, THE AIRCRAFT STRUCK A TREE STUMP SHORT OF THE APPROACH END OF THE RUNWAY.

## Aircraft

- Registration: [N1704U](https://openairdocs.org/aircraft/N1704U), registered now, S/N 20700304, built 1975 (OpenAirDocs)
- Reported make and model: CESSNA 207
- Registry model: [Cessna 207](https://openairdocs.org/model/cessna-207) (registry code 2073602) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 20700304
- Airframe hours: 8799
- Engines: CONTINENTAL IO-520-F-13 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Philip L. Bingham
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 6, 1985, 99 hours before
- Departed: PLG, DILLINGHAM, AK
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 1,212 total, 90 in this make and model, 591 as pilot in command, 80 in the last 90 days, 40 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 70° at 12 knots
- Visibility: 25 statute miles
- Lowest ceiling: 18,000 ft broken
- Temperature: 52 °F, dew point 45 °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 19860714032629A](https://openairdocs.org/incident/19860714032629A), Jul 14, 1986: Cessna 207, Ekuk, AK, Substantial damage. After touch and go to verify landing conditions, aircraft encountered downdraft on final and struck a log in grass.

## Other investigations on N1704U (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 ANC13LA029](https://openairdocs.org/ntsb/ANC13LA029), Mar 6, 2013: Cessna 207 (N1704U), Bethel, AK, substantial damage. Probable cause: The failure of the engine’s No. 1 piston connecting rod retaining bolts due to fatigue fracturing, which resulted in a loss of engine power during cruise flight.

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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