# NTSB ANC87LA074: Cessna 185, N177BM, Anchorage, AK, May 30, 1987

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 30, 1987, 14:35 local (22:35 UTC)
- Place: Anchorage, AK
- Coordinates: 69.219894, -146.789505 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=69.2199&lon=-146.7895&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 10, 1988
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4853
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC87LA074
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4853/pdf
- Page: https://openairdocs.org/ntsb/ANC87LA074

## 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
  - landing gear,tire - other (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - uncontrolled, pilot in command (cause)
- Nose over, landing - roll

## Analysis

THE PILOT LANDED ON AN ASPHALT SURFACED RUNWAY WITH A CESSNA 185 AIRPLANE THAT HAD BEEN MODIFIED TO ACCEPT EXTREMELY LARGE 'TUNDRA' TIRES, WHICH ARE INTENDED PRIMARILY FOR OFF-AIRPORT AND GRAVEL RUNWAY LANDINGS. THE PILOT LOST DIRECTIONAL CONTROL DURING THE LANDING ROLL AND THE ACFT NOSED OVER.

## Aircraft

- Registration: N177BM (not matched to a registry record)
- Reported make and model: CESSNA 185
- Category: Airplane
- Serial number: 18504157
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: William R. Martin
- Airworthiness certificate: Standard, Normal
- Departed: DLG, DILLINGHAM, AK
- Destination: ANC, ANCHORAGE, AK
- Flight plan: VFR
- Airport: ANC, Anchorage International, runway 6L, 10,300 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial; airplane ratings: single-engine land, single-engine sea; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 9,565 total, 850 in this make and model, 9,500 as pilot in command, 65 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 6 knots
- Visibility: 90 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 36 °F
- Altimeter: 29.00 inHg
- Observed at: ANC

## 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 19870530017109A](https://openairdocs.org/incident/19870530017109A), May 30, 1987: Cessna STC185, Anchorage, AK, Substantial damage. Aircraft nosed over on landing. Suspect poor pilot technique on STC aircraft equipped with oversized tundra tires.

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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