# NTSB SEA85LA072: Cessna 170A, N9166A, Christmasvalley, OR, March 10, 1985

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: March 10, 1985, 14:30 local (22:30 UTC)
- Place: Christmasvalley, OR
- Coordinates: 43.240707, -120.589035 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.2407&lon=-120.5890&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40126
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA85LA072
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40126/pdf
- Page: https://openairdocs.org/ntsb/SEA85LA072

## Sequence of events

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

- Main gear collapsed, landing - flare/touchdown
  - landing gear,axle - failure,total (cause)
- Nose over, landing - roll

## Analysis

UPON TOUCHDOWN THE LEFT AXLE BROKE AND THE LEFT MAIN GEAR S EPARATED FROM THE ACFT. THE ACFT LEFT THE RWY AND THE NOSED OVER. THE PLT DISCOVERED THAT THE AXLE HAD CRISTALIZED AND THEN CRACKED.

## Aircraft

- Registration: N9166A (not matched to a registry record)
- Reported make and model: CESSNA 170A
- Category: Airplane
- Serial number: 18927
- Engines: CONTINENTAL C-145-2 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Coe Durland
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 14, 1985
- Departed: S21, SUNRIVER, OR
- Destination: 62S, CHRISTMASVALLEY, OR
- Airport: 62S, Christmas Valley, runway 7, 4,600 × 100 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,870 total, 475 in this make and model, 1,687 as pilot in command, 62 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 61 °F
- Altimeter: 30.00 inHg

## 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 19850310006369A](https://openairdocs.org/incident/19850310006369A), Mar 10, 1985: Cessna 170A, Christmas Valle, OR, Substantial damage. On touchdown axle on left main gear broke and aircraft nosed over. Axle was reported to be crystallized and cracked

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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