# NTSB ANC91LA009: Cessna 180, N4597B, Anchorage, AK, November 4, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 4, 1990, 15:25 local (19:25 UTC)
- Place: Anchorage, AK
- Coordinates: 61.219242, -149.850845 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2192&lon=-149.8508&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 2, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5507
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC91LA009
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5507/pdf
- Page: https://openairdocs.org/ntsb/ANC91LA009

## Probable cause

THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRPLANE DURING THE LANDING ROLL.

## 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
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - not identified, pilot in command (cause)
- Dragged wing,rotor,pod,float or tail/skid, landing - roll

## Analysis

THE PILOT STATED THAT DURING THE LANDING ROLL ON THE RUNWAY, HE LOST DIRECTIONAL CONTROL OF THE AIRPLANE. THE AIRPLANE THEN GROUND LOOPED TO THE LEFT.

## Aircraft

- Registration: [N4597B](https://openairdocs.org/aircraft/N4597B), registered now, S/N 31496, built 1955 (OpenAirDocs)
- Reported make and model: CESSNA 180
- Registry model: [Cessna 180](https://openairdocs.org/model/cessna-180) (registry code 2072602) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 31496
- Engines: CONTINENTAL O-470-J 225 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Davey Adams
- Registered owner: Unknown
- Airworthiness certificate: Standard, Normal
- Airport: MRI, Merrill, runway 6, 3,988 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, valid medical--w/ waivers/lim; flight hours: 206 total, 50 in this make and model, 737 as pilot in command, 14 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 4 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 19 °F, dew point -0 °F
- Altimeter: 29.00 inHg
- Observed at: MRI, 1 nm away

## 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 19901104048599A](https://openairdocs.org/incident/19901104048599A), Nov 4, 1990: Cessna 180, Anchorage, AK, Substantial damage. Ground looped after landing. Had light tailwind.

## Other investigations on N4597B (1)

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 ANC79DAG40](https://openairdocs.org/ntsb/ANC79DAG40), Mar 27, 1979: Cessna 180 (N4597B), Soldotna, 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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