# NTSB ANC66F0077: Cessna 170, N2556C, Sterling, AK, November 28, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 28, 1965
- Place: Sterling, AK · STERLING, AK
- Location: 60.5372° N, 150.7647° W: Placed by OpenAirDocs: center of Sterling, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=60.5372&lon=-150.7647&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 8, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 174274
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC66F0077
- Page: https://openairdocs.org/ntsb/ANC66F0077

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3719  65/11/28   STERLING ALAS       CESSNA 170          CR-  0  0  1  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 1130                    N2556C              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  29, 6500 TOTAL HOURS, 150
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: SKI ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- SKI EQUIPPED AIRCRAFT.OFF AIRPORT OPERATION ON FROZEN LAKE.RIGHT SKI ATTACH BOLTS FAILED
```

## Aircraft

- Registration: [N2556C](https://openairdocs.org/deregistered/N2556C-2015-04-30), registration cancelled 2015-04-30, S/N 26200 (OpenAirDocs)
- Reported make and model: CESSNA 170
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N2556C (2)

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 ANC90LA094](https://openairdocs.org/ntsb/ANC90LA094), Jun 22, 1990: Cessna 170B (N2556C), Port Chalmers, AK, substantial damage. Probable cause: PILOT-IN-COMMAND'S FAILURE TO PROPERLY CALCULATE THE AIRPLANE'S TAKEOFF PERFORMANCE AND THE EFFECT OF THE CROSSWIND.
- [NTSB ANC70FAG30](https://openairdocs.org/ntsb/ANC70FAG30), Jun 22, 1970: Cessna 170B (N2556C), Anchorage, AK, substantial damage

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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