# NTSB SEA88LA090: Ayres S2R Thrush, N5660X, Lind, WA, May 10, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 10, 1988, 09:30 local (16:30 UTC)
- Place: Lind, WA
- Coordinates: 46.899715, -118.68048 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.8997&lon=-118.6805&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 28, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40813
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA090
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40813/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA090

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, maneuvering - aerial application
  - engine assembly,cylinder - failure,total (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

DURING AN AERIAL APPLICATION MANEUVER, A TOTAL LOSS OF POWER OCCURRED DUE TO THE NUMBER NINE CYLINDER FAILING. A RESTART WAS ATTEMPTED, BUT WAS UNSUCCESSFUL. THE PILOT MADE A FORCED LANDING ONTO A VERY SOFT SANDY FIELD, WHERE THE AIRCRAFT NOSED OVER INVERTED DURING THE LANDING ROLL.

## Aircraft

- Registration: [N5660X](https://openairdocs.org/deregistered/N5660X-2001-12-07), registration cancelled 2001-12-07, S/N 1860R, built 1973 (OpenAirDocs)
- Reported make and model: AYRES S2R THRUSH
- Registry model: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 186OR
- Airframe hours: 3830
- Engines: P&W R-1340-AN-1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Lind Air Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Unknown, January 25, 1988
- Departed: 0S0, LIND, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 3,443 total, 1,206 in this make and model, 3,434 as pilot in command, 115 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point -0 °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 19880510041379A](https://openairdocs.org/incident/19880510041379A), May 10, 1988: Ayres S2RRESTD, Lind, WA, Substantial damage. Crash landed in a soft field after powerloss while spraying. Number nine cylinder had come apart.

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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