# NTSB ANC88LA107: Artic S-1B2, N58AT, Kotzebue, AK, August 10, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: August 9, 1988, 18:00 local (Aug 10, 1988, 02:00 UTC)
- Place: Kotzebue, AK
- Coordinates: 60.489295, -149.820541 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.4893&lon=-149.8205&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report June 9, 1989
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5049
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88LA107
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5049/pdf
- Page: https://openairdocs.org/ntsb/ANC88LA107

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - terrain condition - rising (contributing factor)
  - in-flight planning/decision - poor, pilot in command (cause)
  - weather condition - unfavorable wind (contributing factor)
  - airspeed - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - high terrain

## Analysis

THE AIRPLANE CRASHED AT 2700 FEET M.S.L. IN A BOX CANYON WHILE MANEUVERING AT LOW LEVEL & SCOUTING FOR SHEEP. THE TOP OF THE RIDGE WAS APPROXIMATELY 3200 FEET M.S.L. THE INVESTIGATION REVEALED THAT THE PILOT WAS TRYING TO OUTCLIMB THE RIDGE WHEN THE AIRPLANE STALLED AND CRASHED. ACCORDING TO WITNESSES THE WINDS IN THE ACC WERE NOT CONDUCIVE TO SAFE OPERATION AND THE PLT HAD BEEN WARNED TO STAY CLEAR. OTHER OPERATORS CANCELED FLTS DURING THE PERIOD OF UNFAVORABLE WINDS IN THE AREA.

## Aircraft

- Registration: [N58AT](https://openairdocs.org/deregistered/N58AT-1989-09-13), registration cancelled 1989-09-13, S/N 1009 (OpenAirDocs)
- Reported make and model: Artic Aircraft Corp. S-1B2
- Registry model: [Arctic S-1B2](https://openairdocs.org/model/arctic-s-1b2) (registry code 0790208) (OpenAirDocs)
- Category: Airplane
- Serial number: 1009
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Jerome Augdahl
- Airworthiness certificate: Standard, Normal
- Departed: OTZ, KOTZEBUE, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; toxicology performed; flight hours: 1,050 total, 30 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 20 knots, gusting 25
- Visibility: 35 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 50 °F, dew point 30 °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 19880809035539A](https://openairdocs.org/incident/19880809035539A), Aug 9, 1988: Arctic S1B2, Kotzebue, AK, Substantial damage, 2 fatal. Tried to outclimb rising terrain in a canyon with turbullent winds. Stalled and spun into ground on side of canyon.

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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