# NTSB ANC89LA138: Cessna 207-A, N6370H, Tanana, AK, August 11, 1989

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: August 11, 1989, 11:30 local (19:30 UTC)
- Place: Tanana, AK
- Location: 65.1840° N, 152.0551° W: Placed by OpenAirDocs: center of Tanana, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=65.1840&lon=-152.0551&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed, report March 29, 1991
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5237
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC89LA138
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5237/pdf
- Page: https://openairdocs.org/ntsb/ANC89LA138

## Probable cause

PILOT-IN-COMMAND'S IMPROPER INFLIGHT PLANNING AND DECISIONS. HE FLEW INTO WEATHER THAT WAS KNOWN TO BE ADVERSE, AND THE ENVIRONMENTAL CONDITIONS ADVERSELY AFFECTED HIS ABILITY TO SAFELY COMPLETE THE FLIGHT.

## Sequence of events

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

- In flight collision with terrain/water, maneuvering
  - weather condition - fog (cause)
  - flight into known adverse weather - intentional, pilot in command (cause)
  - psychological condition, pilot in command (contributing factor)
  - weather condition - rain (contributing factor)
  - in-flight planning/decision - improper, pilot in command (cause)
  - overconfidence in personal ability, pilot in command (contributing factor)
  - weather condition - turbulence (contributing factor)

## Aircraft

- Registration: [N6370H](https://openairdocs.org/deregistered/N6370H-2001-08-22), registration cancelled 2001-08-22, S/N 20700497 (OpenAirDocs)
- Reported make and model: CESSNA 207-A
- Registry model: [Cessna 207A](https://openairdocs.org/model/cessna-207a) (registry code 2073604) (OpenAirDocs)
- Category: Airplane
- Serial number: 20700497
- Airframe hours: 6680
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Warbelow, Charles, doing business as 40 Mile Air, Ltd
- Registered owner: 40 Mile Air Ltd
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 2, 1989, 23 hours before
- Departed: FAI, FAIRBANKS, AK
- Destination: HSL, HUSLIA, AK
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 2,000 total, 4 in this make and model, 1,900 as pilot in command, 150 in the last 90 days, 50 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 30 knots, gusting 40
- Visibility: 2 statute miles
- Lowest ceiling: 500 ft
- Temperature: 59 °F, dew point 55 °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 19890811028759A](https://openairdocs.org/incident/19890811028759A), Aug 11, 1989: Cessna 207A, Tanana, AK, Substantial damage. Encountered unforecast weather, began to climb to file IFR but collided with a mountainside. Fog, rain in area.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.