# NTSB ANC90LA092: Cessna 185-A, N4145Y, Anchorage, AK, June 22, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 21, 1990, 18:42 local (Jun 22, 1990, 02:42 UTC)
- Place: Anchorage, AK
- Coordinates: 61.220149, -149.850738 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.2201&lon=-149.8507&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1992
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5384
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90LA092
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5384/pdf
- Page: https://openairdocs.org/ntsb/ANC90LA092

## Probable cause

FAILURE OF THE RIGHT MAIN GEAR TORQUE PLATE CAUSING AN UNCONTROLLABLE LANDING ROLL OUT.

## Sequence of events

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

- Nose over, landing - roll
  - landing gear,main gear attachment - fractured (cause)

## Analysis

UPON LANDING AT THE MERRILL FIELD AIRPORT THE AIRPLANE BEGAN TO VEER TO THE RIGHT AND THE PILOT WAS UNABLE TO CONTROL THE GROUND TRACK. THE AIRPLANE NOSED OVER ON THE RUNWAY. EXAMINATION OF THE WRECKAGE SHOWED THAT THE RIGHT MAIN GEAR TORQUE PLATE HAD BROKEN IN TWO AND PART OF THE TORQUE PLATE FELL OUT ONTO THE RUNWAY.

## Aircraft

- Registration: [N4145Y](https://openairdocs.org/deregistered/N4145Y-2025-02-08), registration cancelled 2025-02-08, S/N 1850345, built 1962 (OpenAirDocs)
- Reported make and model: CESSNA 185-A
- Registry model: [Cessna 185A](https://openairdocs.org/model/cessna-185a) (registry code 2072804) (OpenAirDocs)
- Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 0345
- Engines: CONTINENTAL IO-470 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Richard L. Blodgett
- Airworthiness certificate: Standard, Normal
- Departed: MCG, MCGRATH, AK
- Flight plan: VFR
- Airport: MRI, Merrill, runway 24, 4,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 5,000 total, 200 in this make and model, 50 in the last 90 days, 25 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 15 knots
- Visibility: 50 statute miles
- Lowest ceiling: 12,000 ft broken
- Temperature: 63 °F, dew point 43 °F
- Altimeter: 29.00 inHg
- Observed at: MRI

## 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 19900621025229A](https://openairdocs.org/incident/19900621025229A), Jun 21, 1990: Cessna 185A, Anchorage, AK, Substantial damage. Swerved on landing,hit brakes to correct and nosed over. Gear torque plate had failed,axle nut was loose.

## Other investigations on N4145Y (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 LAX02LA258](https://openairdocs.org/ntsb/LAX02LA258), Aug 16, 2002: Cessna 185A (N4145Y), Fillmore, CA, substantial damage. Probable cause: the pilot's continued visual flight rules flight into instrument meteorological conditions, which resulted in the in-flight collision with terrain during a climb.
- [NTSB ANC95LA140](https://openairdocs.org/ntsb/ANC95LA140), Aug 15, 1995: Cessna 185A (N4145Y), Teller, AK, substantial damage. Probable cause: DEFLATION OF THE LEFT MAIN TUNDRA TIRE DUE TO VALVE STEM DAMAGE (FAILURE) WHEN THE TIRE ROTATED INDEPENDENTLY OF THE WHEEL RIM, RESULTING IN LOSS OF DIRECTIONAL CONTROL AND A GROUND SWERVE.
- [NTSB SEA67D0167](https://openairdocs.org/ntsb/SEA67D0167), Sep 15, 1966: Cessna 185 (N4145Y), Great Falls, MT, 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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