# NTSB SEA83LA130: Cessna 337B, N5479S, Dayton, OR, June 20, 1983

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: June 20, 1983, 14:24 local (21:24 UTC)
- Place: Dayton, OR
- Coordinates: 45.190868, -123.070396 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.1909&lon=-123.0704&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39716
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA130
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39716/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA130

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - fluid,fuel - starvation (contributing factor)
  - fluid,fuel - exhaustion (contributing factor)
  - performance data - not followed, pilot in command (cause)
  - airspeed - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - stall - uncontrolled, pilot in command (cause)

## Analysis

THE PILOT STATED HE WAS DEMONSTRATING A 'STEEP LETDOWN' TO HIS PASSENGER FROM ABOUT 3200 MSL. THE DESCENT WAS WITH FULL FLAPS, LANDING GEAR EXTENDED AND POWER OFF ON BOTH ENGINES. AT ABOUT 1200 MSL THE PILOT LEVELED OFF AND ADDED POWER AND HAD NONE ON THE REAR ENGINE, THEN THE FRONT ENGINE SPUTTERED AND QUIT. BOTH ENGINES WERE BEING FUELED FROM THE AUX FUEL TANKS DURING THE DESCENT. THE PLT ATTEMPTED TO RESTART THE FRONT ENGINE WHEN THE ACFT STALLED AND CRASHED. NO FUEL WAS FOUND IN THE LEFT AUX TANK AND THE RIGHT AUX HAD ABOUT 2.5 GALS. THE AUX TANK FUEL PICK-UPS ARE LOCATED AT THE REAR OF THE TANKS.

## Aircraft

- Registration: [N5479S](https://openairdocs.org/deregistered/N5479S-1985-03-28), registration cancelled 1985-03-28, S/N 3370579 (OpenAirDocs)
- Reported make and model: CESSNA 337B
- Registry model: [Cessna 337B](https://openairdocs.org/model/cessna-337b) (registry code 2075706) (OpenAirDocs)
- Category: Airplane
- Serial number: 337-0579
- Airframe hours: 2650
- Engines: CONTINENTAL IO-360 C/D 210 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Jerome Lee Shannon
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 7, 1978, 68 hours before
- Departed: HIO, HILLSBORO, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, expired; seat: left; flight hours: 1,420 total, 149 in this make and model, 1,370 as pilot in command, 2 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: 4,000 ft broken
- Altimeter: 29.00 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 19830620026349A](https://openairdocs.org/incident/19830620026349A), Jun 20, 1983: Cessna 337B, Dayton, OR, Substantial damage. Pilot was demonstrating steep descent to passenger and engines would not respond to throttle application.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.