# NTSB SEA85IA160: Cessna 207, N1755U, Bellevue, WA, July 10, 1985

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: July 10, 1985, 11:30 local (18:30 UTC)
- Place: Bellevue, WA
- Coordinates: 47.300937, -122.260627 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.3009&lon=-122.2606&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40072
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA85IA160
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40072/pdf
- Page: https://openairdocs.org/ntsb/SEA85IA160

## Sequence of events

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

- Loss of engine power, cruise - normal
- On ground/water encounter with weather, landing - roll
  - terrain condition - wet (contributing factor)
  - terrain condition - rough/uneven (contributing factor)
  - terrain condition - none suitable (contributing factor)

## Analysis

A COMPLETE LOSS OF POWER OCCURRED DURING A CFR 135 PASSENGER FLIGHT. THE OIL FILTER ADAPTER WAS FOUND TO BE SAFETY WIRED IN A POSITION WITH 3/4' OF THREADS VISABLE. CAUSING A COMPLETE AND SUDDEN LOSS OF OIL AND POWER.

## Aircraft

- Registration: N1755U (not matched to a registry record)
- Reported make and model: CESSNA 207
- Category: Airplane
- Serial number: 20700355
- Airframe hours: 5452
- Engines: CONTINENTAL IO-520-F9 300 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 135
- Operator: San Uian Airlines
- Registered owner: San Juian Airlines
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, June 28, 1985, 38 hours before
- Departed: SEA, SEATTLE, WA
- Destination: FRO, FRIDAY HARBOR, WA
- Flight plan: IFR
- Airport: None

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; commercial, flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 1,848 total, 38 in this make and model, 1,109 as pilot in command, 131 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 81 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19850710065589I](https://openairdocs.org/incident/19850710065589I), Jul 10, 1985: Cessna 207, Bellevue, WA, Minor damage. Loss of oil pressure before engine failed. Wing damage during landing. Threads were stripped on oil filter adapter.

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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