# NTSB CHI83IA103: Embraer EMB-110, N1356P, Milwaukee, WI, February 4, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: February 4, 1983, 17:00 local (23:00 UTC)
- Place: Milwaukee, WI
- Location: 43.0389° N, 87.9065° W: Placed by OpenAirDocs: center of Milwaukee, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0389&lon=-87.9065&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 18 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12043
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83IA103
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12043/pdf
- Page: https://openairdocs.org/ntsb/CHI83IA103

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise - normal
  - flight control,elevator attachment - worn (cause)
  - flight control,elevator attachment - loose (cause)

## Analysis

THE ACFT EXPERIENCED EXTREME OSCILLATIONS ABOUT THE PITCH AXIS WITH THE CONTROL COLUMN MOVING FORE & AFT FROM 1 TO 3 INCHES. THE OSCILLATIONS VARIED DIRECTLY WITH AIRSPEED. NO OUT OF LIMIT CONDITIONS WERE FOUND UNTIL AFTER A SECOND OCCURRENCE WHEN THE ELEVATOR TRIM TAB HINGE WAS REPLACED DUE TO WEAR AND A MEASURED PLAY OF 5/32 OF AN INCH. NO FURTHER OSCILLATIONS WERE EXPERIENCED.

## Aircraft

- Registration: [N1356P](https://openairdocs.org/deregistered/N1356P-2008-08-22), registration cancelled 2008-08-22, S/N 110.370, built 1981 (OpenAirDocs)
- Reported make and model: EMBRAER EMB-110
- Registry model: [Embraer EMB-110P1](https://openairdocs.org/model/embraer-emb-110p1) (registry code 3260122) (OpenAirDocs)
- Registry engine: [U/A Canada PT6A-34](https://openairdocs.org/engine/u-a-canada-pt6a-34) (registry code 61534, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 110370
- Airframe hours: 3086
- Engines: P&W PT6-A-34 750 horsepower turbo prop
- Damage: Minor damage
- Flight: Part 135
- Operator: Simmons Airlines
- Registered owner: Titan Partners
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, January 8, 1983, 118 hours before
- Destination: ORD, CHICAGO, IL
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; airplane ratings: multi-engine land; instrument ratings: airplane; medical: unknown, unknown; seat: left

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 300° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 16 °F, dew point 7 °F
- Observed at: MKE

## 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 19830204007749I](https://openairdocs.org/incident/19830204007749I), Feb 4, 1983: Emb EMB110P1, Milwaukee, WI. Pilot experienced elevator osillations. No airframe ice. Installed a new trim tab hinge assembly.

## Other investigations on N1356P (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 DCA86AA021](https://openairdocs.org/ntsb/DCA86AA021), Mar 14, 1986: Embraer EMB-110P1 (N1356P), Alpena, MI, destroyed, 3 fatal

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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