# NTSB SEA86LA156: Cessna 188, N4835Q, Durkee, OR, June 28, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 28, 1986, 07:45 local (14:45 UTC)
- Place: Durkee, OR
- Coordinates: 44.60033, -117.369621 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.6003&lon=-117.3696&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40431
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA156
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40431/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA156

## Sequence of events

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

- In flight encounter with weather, cruise
  - weather condition - downdraft (contributing factor)
  - proper altitude - not selected, pilot in command (cause)
- Forced landing, descent - emergency
- Hard landing, landing
  - terrain condition - downhill (contributing factor)
  - terrain condition - rough/uneven (contributing factor)
- Main gear collapsed, landing - roll
- Dragged wing,rotor,pod,float or tail/skid, landing - roll

## Analysis

WHILE CROSSING A MOUNTAIN RIDGE AT LOW ALTITUDE, THE AIRCRAFT ENCOUNTERED DOWNDRAFTS. THE PILOT WAS FORCED TO LAND AS HE WAS UNABLE TO ARREST THE DESCENT RATE. THE LANDING WAS ACCOMPLISHED ONTO VERY ROUGH TERRAIN.

## Aircraft

- Registration: [N4835Q](https://openairdocs.org/deregistered/N4835Q-2003-02-04), registration cancelled 2003-02-04, S/N 18802571T, built 1976 (OpenAirDocs)
- Reported make and model: CESSNA 188
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 5277
- Airframe hours: 3600
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Positioning, Part 137
- Operator: Richard Griffitts, Inc
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 1, 1986
- Departed: DURKEE, OR
- Destination: RYE VALLEY, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 2,420 total, 1,200 in this make and model, 2,355 as pilot in command, 200 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 6 knots, gusting 10
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 61 °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).

- [Accident 19860628087509A](https://openairdocs.org/incident/19860628087509A), Jun 28, 1986: Cessna A188B, Durkee, OR, Substantial damage. Encountered a downdraft trying to cross a ridge forcing a landing in rough terrain.

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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