# NTSB CHI98LA223: Rockwell S2-R, N5682X, Williams, MN, June 26, 1998

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 26, 1998, 09:55 local (14:55 UTC)
- Place: Williams, MN
- Coordinates: 48.759284, -94.950363 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.7593&lon=-94.9504&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 15, 2001
- Report: Approved by Office Director
- NTSB case key (mKey): 10937
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI98LA223
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10937/pdf
- Page: https://openairdocs.org/ntsb/CHI98LA223

## Probable cause

the pilot's failure to maintain adequate airspeed which resulted in an inadvertent stall.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - airspeed - inadequate, pilot in command (cause)
  - stall - inadvertent, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

The pilot said that he 'forced' the turn when trying to line up for an aerial application swatch run.  He said that the airplane stalled, he recovered once, but stalled a second time when he attempted to lift the nose to avoid impact with the terrain,  The pilot did not indicate any mechanical anomalies in the operation of the airplane.

## Factual narrative

On  June 26, 1998, at 0955 central daylight time, a Rockwell International S2-R, N5682X, encountered a loss of control and impacted the terrain while maneuvering at a low altitude near Williams, Minnesota.  The commercial pilot received no injuries and the airplane sustained substantial damage.  The airplane was being operated as a commercial flight under 14 CFR Part 137 and performing aerial applications when the accident occurred.  The flight originated from Williams, Minnesota, at 0950. Visual meteorological conditions prevailed and no flight plan was filed.

In his written statement the pilot said, "Nearing the completion of a 360 degree turn again, I was not lined up properly.  Rather than going around a second time, I attempted to force the turn, stalled, recovered nose down approximately 30 to 40 degrees, then stalled a second time attempting to lift the nose before hitting the ground."

The pilot did not indicate any mechanical anomalies in the operation of the airplane.

## Aircraft

- Registration: [N5682X](https://openairdocs.org/aircraft/N5682X), registered now, S/N 2295R (OpenAirDocs)
- Reported make and model: Rockwell S2-R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Category: Airplane
- Serial number: 2295R
- Airframe hours: 4500
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Slater Spraying Services
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 31, 1998, 110 hours before
- Departed: NONE, WILLIAMS, MN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; commercial; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 5,000 total, 1,578 in this make and model, 4,900 as pilot in command, 126 in the last 90 days, 80 in the last 30 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 5 knots, gusting 10
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 68 °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 19980626015159A](https://openairdocs.org/incident/19980626015159A), Jun 26, 1998: Ayres S2R, Williams, MN, Substantial damage. Acft crashed under unknown circum during aerial application.(.4) the pilot said that he `forced' the turn when trying to line up for an aerial 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.

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