# NTSB ANC75DAG09: Piper PA-18, N6891B, Port Alswrth, AK, August 1, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 1, 1974
- Place: Port Alswrth, AK · PORT ALSWRTH, AK
- Location: 60.1578° N, 154.3406° W: Placed by OpenAirDocs: center of Port Alsworth, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=60.1578&lon=-154.3406&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 19, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 134464
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC75DAG09
- Page: https://openairdocs.org/ntsb/ANC75DAG09

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2369   74/8/1  NR.PORT ALSWRTH,ALAS  PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 53, 348
        TIME - 1400                    N6891B              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 262 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         PORT ALSWRTH,ALAS            LAKE CLARK,ALAS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
        FACTOR(S)
           TERRAIN - OTHER
        REMARKS- FLOAT EQUIPPED,SHORT LAKE.
```

## Aircraft

- Registration: [N6891B](https://openairdocs.org/aircraft/N6891B), registered now, S/N 18-5080 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18S-150](https://openairdocs.org/model/piper-pa-18s-150) (registry code 7101832) (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

## 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 19740801025779A](https://openairdocs.org/incident/19740801025779A), Aug 1, 1974: Piper PA18S150, Port Alswrth, AK, Substantial damage. Float equipped,short lake.

## Other investigations on N6891B (1)

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.

- [NTSB ANC10CA034](https://openairdocs.org/ntsb/ANC10CA034), May 1, 2010: Piper PA-18-150 (N6891B), Willow, AK, substantial damage. Probable cause: The pilot's failure to maintain adequate airspeed while maneuvering, which resulted in an aerodynamic stall.

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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