# NTSB ANC80FAD02: Interstate S1B2, N56AT, Sitka, AK, December 11, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 11, 1979
- Place: Sitka, AK · SITKA, AK
- Location: 57.0531° N, 135.3300° W: Placed by OpenAirDocs: center of Sitka, AK, within about 30 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=57.0531&lon=-135.3300&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 17, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 132918
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC80FAD02
- Page: https://openairdocs.org/ntsb/ANC80FAD02

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2885  79/12/11   SITKA,AK            INTERSTATE S1B2     CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1330                    N56AT               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  AGE 59, 6658 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            564 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - SITKA SEAPLANE
        DEPARTURE POINT             INTENDED DESTINATION
          SITKA,AK                    LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        REMARKS- FLOAT EQUIPPED.COURSE SNOW & ICE NOT COMPLETELY REMOVED FROM AERODYNAMIC SURFACES.
```

## Aircraft

- Registration: [N56AT](https://openairdocs.org/deregistered/N56AT-2022-05-09), registration cancelled 2022-05-09, S/N 1007, built 1977 (OpenAirDocs)
- Reported make and model: INTERSTATE S1B2
- Registry model: [Arctic S-1B2](https://openairdocs.org/model/arctic-s-1b2) (registry code 0790208) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sitka Seaplane

## 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 19791211034099A](https://openairdocs.org/incident/19791211034099A), Dec 11, 1979: Arctic S1B2, Sitka, AK, Substantial damage. Tried water takeoff with ice on aircraft. Left wing stalled on liftoff. Left float wing hit water.

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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