# NTSB ANC81DAA32: Cessna 170B, N8259A, Ackerman Lake, AK, September 16, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 16, 1981
- Place: Ackerman Lake, AK · ACKERMAN LAKE, AK
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 13, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 123616
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC81DAA32
- Page: https://openairdocs.org/ntsb/ANC81DAA32

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1856  81/9/16    ACKERMAN LAKE,AK    CESSNA 170B         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 45, 500
        TIME - 1415                    N8259A              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 420 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ACKERMAN LAKE
        DEPARTURE POINT             INTENDED DESTINATION
          ACKERMAN LAKE,AK            FAIRBANKS,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - INCORRECT TRIM SETTING
           MISCELLANEOUS ACTS,CONDITIONS - SUNGLARE
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        REMARKS- FLOAT EQUIPPED.ELEVATOR TRIM LEFT IN AFT PSN AFTER PREVIOUS FLT.
```

## Aircraft

- Registration: N8259A (not matched to a registry record)
- Reported make and model: CESSNA 170B
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Ackerman Lake

## 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 19810916065189A](https://openairdocs.org/incident/19810916065189A), Sep 16, 1981: Cessna 170B, Ackerman Lake, AK, Substantial damage. Failed to neutralize nose up trim prior to water takeoff. Airplane entered climbing turn and stalled. 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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