# NTSB ANC82IA076: Cessna 206B, N3870G, Scammon Bay, AK, August 25, 1982

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: August 25, 1982
- Place: Scammon Bay, AK
- Coordinates: 61.790725, -165.959121 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.7907&lon=-165.9591&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 25, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 72565
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82IA076
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72565/pdf
- Page: https://openairdocs.org/ntsb/ANC82IA076

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, approach - vfr pattern - final approach
  - fluid,fuel - water (cause)
- Forced landing, approach - vfr pattern - final approach
  - emergency procedure - delayed, pilot in command
- Nose gear collapsed, landing - flare/touchdown
  - terrain condition - rough/uneven (contributing factor)
  - landing gear,nose gear - overload

## Analysis

WHEN ON SHORT FINAL THE PILOT ATTEMPTED TO ADD POWER FOR GLIDE PATH CORRECTION BUT RECEIVED NO ENGINE RESPONSE. HE SWITCHED TANKS AND OPENED THE STRAINER DRAIN VALVE BECAUSE OF PREVIOUS WATER CONTAMINATION PROBLEMS. HE MADE A LEFT TURN TO MAKE AN EMERGENCY LANDING ON A RIVER BANK, AND ABOUT FIVE SECONDS BEFORE TOUCH DOWN, SWITCHED ON THE FUEL BOOST PUMP. STILL NO RESPONSE FROM THE ENGINE OCCURRED. THE AIRCRAFT LANDED ON THE RIVER BANK, COLLAPSING THE NOSE GEAR AND RECEIVING OTHER AIRFRAME DAMAGE. SUBSEQUENT INVESTIGATION REVEALED THE PRESENCE OF WATER IN THE FUEL SUMP. THE PILOT STATED THAT HE HAD BEEN EXPERIENCING FUEL CONTAMINATION FROM A VARIETY OF SOURCES.

## Aircraft

- Registration: [N3870G](https://openairdocs.org/deregistered/N3870G-2018-05-30), registration cancelled 2018-05-30, S/N U206-0870, built 1967 (OpenAirDocs)
- Reported make and model: CESSNA 206B
- Registry model: [Cessna U206B](https://openairdocs.org/model/cessna-u206b) (registry code 2073322) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: U206-0870
- Airframe hours: 2728
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 91
- Operator: Frank Allen Borman
- Registered owner: Frank Allen Borman
- Departed: SZ0, EMMONAK, AK
- Airport: SCM, Scammon Bay, runway 10, 2,800 × 100 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 3,830 total, 3,167 in this make and model, 3,667 as pilot in command, 240 in the last 90 days, 91 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 10 knots
- Visibility: 30 statute miles
- Lowest ceiling: 3,500 ft broken

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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