# NTSB SEA89LA132: Rockwell S-2R, N5571X, Middleton, ID, July 11, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 11, 1989, 07:03 local (13:03 UTC)
- Place: Middleton, ID
- Coordinates: 43.74094, -116.579063 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.7409&lon=-116.5791&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report January 23, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 41047
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA89LA132
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41047/pdf
- Page: https://openairdocs.org/ntsb/SEA89LA132

## Probable cause

THE PILOT DID NOT MAINTAIN AN ADEQUATE VISUAL LOOKOUT. A FACTOR WAS THE GUY WIRES AT THE EDGE OF THE FIELD.

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - terrain condition - high obstruction(s) (contributing factor)
  - object - guy wire (contributing factor)
  - visual lookout - inadequate, pilot in command (cause)

## Analysis

DURING AN APCH FOR FIRST SPRAY RUN, THE ACFT'S RIGHT WING STRUCK GUY WIRES AT EDGE OF THE FIELD. BOTH THE PILOT & GROUND CREW HAD CHECKED THE FIELD FOR OBSTRUCTIONS.

## Aircraft

- Registration: [N5571X](https://openairdocs.org/aircraft/N5571X), registered now, S/N 5081R, built 1976 (OpenAirDocs)
- Reported make and model: ROCKWELL S-2R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Category: Airplane
- Serial number: 5D81R
- Engines: GARRETT 331-1-151K 680 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Davison Air Service West
- Departed: U35, CALDWELL, ID

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,975 total, 301 in this make and model, 2,900 as pilot in command, 301 in the last 90 days, 100 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °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 19890711066099A](https://openairdocs.org/incident/19890711066099A), Jul 11, 1989: Ayres STCS2, Middleton, ID, Substantial damage. First spray run right wing struck a unseen guy wire and crashed. Had checked field but wire on edge of field.

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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