# NTSB CHI85IA160: Swearingen SA226TC, N163MA, Dayton, OH, April 10, 1985

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: April 10, 1985, 13:30 local (18:30 UTC)
- Place: Dayton, OH
- Location: 39.9162° N, 84.2246° W: Placed by OpenAirDocs from NTSB’s distance and direction from JAMES M COX DAYTON INTL (DAY), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.9162&lon=-84.2246&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 17 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12915
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85IA160
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12915/pdf
- Page: https://openairdocs.org/ntsb/CHI85IA160

## Sequence of events

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

- Airframe/component/system failure/malfunction, approach - vfr pattern - final approach
  - warning system(other) - engaged
  - warning system(other) - undetermined (cause)
  - safety system(other) - engaged
  - safety system(other) - undetermined (cause)
  - remedial action - performed, pilot in command

## Analysis

ON SHORT FINAL AT AN AIRSPEED BET 120 AND 125 KTS FULL FLAPS WERE LOWERED FOR LANDING. WHEN THE FLAPS REACHED THE FULL DOWN POSITION, THE STALL WARNING HORN CAME ON AND THE STICK PUSHER ON THE ROSEMONT STALL AVOIDANCE SYSTEM ACTIVATED. THE CAPTAIN DISENGAGED THE SAS CLUTCH AND A NORMAL LANDING WAS MADE. THE STALL WARNING REMAINED ON UNTIL TOUCHDOWN. A CALIBRATION CHECK AND BENCH TEST OF THE SYSTEMS COMPONENTS DID NOT REVEALED THE CAUSE OF THE MALFUNCTION.

## Aircraft

- Registration: [N163MA](https://openairdocs.org/deregistered/N163MA-2000-12-01), registration cancelled 2000-12-01, S/N TC236 (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-236
- Engines: GARRETT TPE3313UUW303 940 horsepower turbo prop
- Damage: No damage
- Flight: Part 135
- Operator: Midstate Airlines, Inc.
- Registered owner: Midstate Airlines, Inc.
- Airworthiness certificate: Standard, Normal
- Departed: MKE, MILWAUKEE, WI
- Flight plan: IFR
- Airport: DAY, Dayton Int'L, runway 18, 7,000 ×  ft

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; commercial, flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 6,258 total, 197 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 11 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Observed at: DAY

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19850410065739I](https://openairdocs.org/incident/19850410065739I), Apr 10, 1985: Swrngn SA226TC, Dayton, OH. Stick pusher activated on short final. Disengaged and stall horn continued until touchdown. Sas out of adjustment.

## Other investigations on N163MA (1)

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.

- [NTSB CHI84IA155](https://openairdocs.org/ntsb/CHI84IA155), Apr 16, 1984: Swearingen SA226TC (N163MA), Milwaukee, WI, incident, minor damage

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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