# NTSB ANC90LA151: Artic S1B2, N52AT, Talkeetna, AK, August 20, 1990

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: August 20, 1990, 14:30 local (22:30 UTC)
- Place: Talkeetna, AK
- Coordinates: 62.449752, -149.790557 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=62.4498&lon=-149.7906&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5434
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA151
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5434/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA151

## Probable cause

THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN AIR SPEED ON TAKEOFF.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - airspeed - not maintained, pilot in command (cause)
- In flight collision with object, takeoff - initial climb

## Analysis

THE PILOT STATED THAT AFTER LIFT OFF FROM THE LAKE AND AT APPROXIMATELY 20 FEET OF ALTITUDE, THE AIRPLANE ABRUPTLY SETTLED BACK ONTO THE LAKE. THE PILOT LOST CONTROL OF THE AIRPLANE; THE AIRPLANE THEN CRASHED INTO THE BANK. THE AIRPLANE CAME TO REST 150 FEET FROM THE EDGE OF THE LAKE.

## Aircraft

- Registration: [N52AT](https://openairdocs.org/aircraft/N52AT), registered now, S/N 1003, built 1977 (OpenAirDocs)
- Reported make and model: Artic Aircraft Corp. S1B2
- Registry model: [Interstate S-1B2](https://openairdocs.org/model/interstate-s-1b2) (registry code 1850303) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1003
- Airframe hours: 1388
- Engines: LYCOMING O-320-A2B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Jenne, Eugene F.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 23, 1990, 13 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; private; airplane ratings: single-engine sea, single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 1,775 total, 150 in this make and model, 1,750 as pilot in command, 13 in the last 90 days, 12 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots
- Visibility: 30 statute miles
- Lowest ceiling: 7,000 ft broken
- Temperature: 61 °F, dew point 46 °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 19900820038159A](https://openairdocs.org/incident/19900820038159A), Aug 20, 1990: Arctic S1B2, Talkeetna, AK, Substantial damage. Lifted off from a lake but settled to water,continued to another liftoff then struck trees on climbout.

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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