# NTSB CHI89FA092: Swearingen SA226TC, N232AM, Marion, IL, May 19, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: May 18, 1989, 19:10 local (May 19, 1989, 00:10 UTC)
- Place: Marion, IL
- Location: 37.7550° N, 89.0111° W: Placed by OpenAirDocs at VETERANS AIRPORT OF SOUTHERN ILLINOIS (MWA), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7550&lon=-89.0111&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 14 uninjured
- Status: Completed, report June 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 14252
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI89FA092
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14252/pdf
- Page: https://openairdocs.org/ntsb/CHI89FA092

## Probable cause

FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRCRAFT. CONTRIBUTING TO THE ACCIDENT WAS LACK OF CREW COORDINATION AND INAPPROPRIATE REMEDIAL ACTION ON THE PART OF THE AIRCREW, AND IMPROPER MAINTENANCE MODIFICATION BY THE OPERATOR.

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - propeller governor control,linkage - stripped thread
  - maintenance,modification - improper, company maintenance personnel (contributing factor)
- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)
  - remedial action - not performed, pilot in command (contributing factor)
  - crew/group coordination - inadequate, pilot in command (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch

## Aircraft

- Registration: [N232AM](https://openairdocs.org/deregistered/N232AM-1990-07-26), registration cancelled 1990-07-26, S/N TC314 (OpenAirDocs)
- Reported make and model: SWEARINGEN SA226TC
- Registry model: [Swearingen SA226TC](https://openairdocs.org/model/swearingen-sa226tc) (registry code 8780404) (OpenAirDocs)
- Category: Airplane
- Serial number: TC-314
- Engines: GARRETT TPE-331 840 horsepower turbo prop
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Air Midwest
- Airworthiness certificate: Standard, Normal
- Departed: STL, ST LOUIS, MO
- Destination: MWA, MARION, IL
- Flight plan: IFR
- Airport: MWA, Williamson City Regional, runway 20, 150 ×  ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,510 total, 1,800 in this make and model, 2,365 as pilot in command, 250 in the last 90 days, 85 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 12 knots
- Visibility: 6 statute miles
- Lowest ceiling: 6,000 ft broken
- Temperature: 75 °F, dew point -0 °F
- Altimeter: 29.00 inHg
- Observed at: MWO

## 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 19890518014009A](https://openairdocs.org/incident/19890518014009A), May 18, 1989: Swrngn SA226TC, Marion, IL, Substantial damage. Left prop control rod end stripped,unable to correct right swerve. Ran off runway into ditch. Unable beta or reverse

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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