# NTSB SEA86LA128: Ayres S-2R, N4945X, Odessa, WA, May 19, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 19, 1986, 07:00 local (14:00 UTC)
- Place: Odessa, WA
- Coordinates: 47.339012, -118.660362 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.3390&lon=-118.6604&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): 40408
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA128
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40408/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA128

## Sequence of events

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

- Loss of engine power, climb - to cruise
  - engine assembly,cylinder - failure,total (cause)
- Fire, descent - emergency
- Gear collapsed, landing - roll
  - terrain condition - rough/uneven

## Analysis

A ROUGH RUNNING ENGINE ACCOMPANIED BY SMOKE RISING FROM THE LEFT SIDE OF THE ENGINE OCCURRED SHORTLY AFTER TAKEOFF. THE LANDING GEAR THEN COLLAPSED DURING THE SUBSEQUENT FORCED LANDING AND THE ACFT WAS DESTROYED BY FIRE. THE NUMBER ONE CYLINDER WAS FOUND TO HAVE FAILED.

## Aircraft

- Registration: N4945X (not matched to a registry record)
- Reported make and model: AYRES S-2R
- Category: Airplane
- Serial number: 5023R
- Airframe hours: 3300
- Engines: P&W R-1340-AN1 450 horsepower reciprocating
- Damage: Destroyed
- Fire: In-Flight
- Flight: Aerial application, Part 137
- Operator: Odessa Farming Services
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, October 3, 1985
- Departed: WA43, ODESSA, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 5,600 total, 2,500 in this make and model, 130 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 50 °F

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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