# NTSB ANC74DAG90: Piper PA-18, N3686Z, Skwentna, AK, January 5, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 5, 1974
- Place: Skwentna, AK · SKWENTNA, AK
- Location: 61.9903° N, 151.3978° W: Placed by OpenAirDocs: center of Skwentna, AK, within about 12 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.9903&lon=-151.3978&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 11, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187026
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC74DAG90
- Page: https://openairdocs.org/ntsb/ANC74DAG90

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0289   74/1/5  NR.SKWENTNA,ALAS      PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 27, 883
        TIME - 1930                    N3686Z              PX-  0  0  1  PRACTICE                  TOTAL HOURS, 3 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         SKWENTNA,ALAS                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAKEOFF: RUN
           GEAR COLLAPSED                                           TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           TERRAIN - OTHER
        REMARKS- TKOF FROM FROZEN LAKE LIT BY FLARE POTS.
```

## Aircraft

- Registration: [N3686Z](https://openairdocs.org/deregistered/N3686Z-2016-07-29), registration cancelled 2016-07-29, S/N 18-7419, built 1960 (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 19740105002199A](https://openairdocs.org/incident/19740105002199A), Jan 5, 1974: Piper PA18150, Skwentna, AK, Substantial damage. Tkof from frozen lake lit by flare pots.

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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