# NTSB ANC75DAD04: Piper PA-18, N6791B, Ketchikan, AK, April 3, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 3, 1975
- Place: Ketchikan, AK · KETCHIKAN, AK
- Location: 55.3571° N, 131.6746° W: Placed by OpenAirDocs: center of Ketchikan, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=55.3571&lon=-131.6746&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 14, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148335
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC75DAD04
- Page: https://openairdocs.org/ntsb/ANC75DAD04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0617   75/4/3  NR.KETCHIKAN,AK       PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 42, 730
        TIME - 2015                    N6791B              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 400 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         KETCHIKAN,AK                 RETURN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           TERRAIN - SNOW-COVERED
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- PLT LND FLOAT EQUIPPD ACFT ON SNOW COVERED LAKE.FLOATS BROKE THRU CRUST.
```

## Aircraft

- Registration: [N6791B](https://openairdocs.org/aircraft/N6791B), registered now, S/N 18-5025, built 1956 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (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 19750403006349A](https://openairdocs.org/incident/19750403006349A), Apr 3, 1975: Piper PA18150, Ketchikan, AK, Substantial damage. Plt lnd float equippd acft on snow covered lake. Floats broke thru crust.

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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