# NTSB ANC85LA097: Cessna 170B, N4570C, Fairbanks, AK, June 19, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 19, 1985, 07:54 local (15:54 UTC)
- Place: Fairbanks, AK
- Coordinates: 64.809127, -147.720718 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=64.8091&lon=-147.7207&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4502
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC85LA097
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4502/pdf
- Page: https://openairdocs.org/ntsb/ANC85LA097

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - on ground/water, landing - roll
  - aircraft handling - improper, pilot in command (cause)
  - ground loop/swerve - uncontrolled, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
  - lack of recent total experience, pilot in command (cause)

## Analysis

PLT LOST CONTROL ON LANDING AND GROUND LOOPED.  WX AND FIELD CONDITIONS NOT A FACTOR.

## Aircraft

- Registration: [N4570C](https://openairdocs.org/aircraft/N4570C), registered now, S/N 25514, built 1956 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Registry engine: [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series) (registry code 17025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 25514
- Airframe hours: 4292
- Engines: CONTINENTAL O-360D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: John A. Berglin
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 1, 1985
- Departed: FAI, FAIRBANKS, AK
- Destination: FAI, FAIRBANKS, AK
- Airport: FAI, Fairbanks International

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; airplane ratings: single-engine land; medical: class 3, unknown; seat: left; flight hours: 80 total, 50 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 70° at 3 knots
- Visibility: 80 statute miles
- Lowest ceiling: 7,500 ft broken
- Temperature: 55 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: FAI

## 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 19850619030379A](https://openairdocs.org/incident/19850619030379A), Jun 19, 1985: Cessna 170B, Fairbanks, AK, Substantial damage. The aircraft ran off the side of the runway during landing. Pilot reported fading brake but no malfunction found.

## Other investigations on N4570C (3)

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 ANC87LA046](https://openairdocs.org/ntsb/ANC87LA046), Mar 8, 1987: Cessna 170B (N4570C), Fairbanks, AK, substantial damage
- [NTSB ANC70FAA10](https://openairdocs.org/ntsb/ANC70FAA10), May 20, 1970: Cessna 170B (N4570C), College, AK, substantial damage
- [NTSB CHI67F0060](https://openairdocs.org/ntsb/CHI67F0060), Jul 4, 1966: Cessna 170B (N4570C), Grand Rapids, MI, 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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