# NTSB FTW84IA135: Nihon YS-11, N903TC, Tulsa, OK, February 15, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: February 15, 1984, 10:10 local (16:10 UTC)
- Place: Tulsa, OK
- Location: 36.1984° N, 95.8881° W: Placed by OpenAirDocs at TULSA INTL (TUL), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.1984&lon=-95.8881&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 20 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21161
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84IA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21161/pdf
- Page: https://openairdocs.org/ntsb/FTW84IA135

## Sequence of events

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

- Airframe/component/system failure/malfunction, unknown
  - landing gear,steering system - fatigue (cause)
- Loss of control - on ground/water, landing - roll
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ground
  - terrain condition - wet

## Analysis

THE ACFT EXPERIENCED A NOSE WHEEL STEERING MALFUNCTION & RAN OFF THE RWY DURING LANDING. THE NOSE WHEEL SYSTEM WAS REMOVED FROM THE ACFT & SUBMITTED FOR INSPECTION & OVERHAUL. EXAMINATION REVEALED THAT THE LEVER SHAFT 'EARS' HAD SEPARATED FROM FATIGUE.

## Aircraft

- Registration: [N903TC](https://openairdocs.org/deregistered/N903TC-1992-12-30), registration cancelled 1992-12-30, S/N 2044 (OpenAirDocs)
- Reported make and model: NIHON YS-11
- Registry model: [Nihon YS-11](https://openairdocs.org/model/nihon-ys-11) (registry code 6310406) (OpenAirDocs)
- Category: Airplane
- Serial number: 2044
- Airframe hours: 21772
- Engines: ROLLS-ROYCE DART 542-10J 2305 horsepower turbo prop
- Damage: No damage
- Flight: Part 121
- Registered owner: Transcentral Airline Corp.
- Airworthiness certificate: Standard, Normal
- Departed: LIT, LITTLE ROCK, AR
- Destination: TUL, TULSA, OK
- Flight plan: IFR
- Airport: TUL, Tulsa Int'L, runway 17L, 10,000 × 200 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 6,000 total, 800 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 23 knots, gusting 30
- Visibility: 10 statute miles
- Lowest ceiling: 1,700 ft overcast
- Temperature: 57 °F
- Altimeter: 29.00 inHg
- Observed at: TUL

## 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 19840215011239I](https://openairdocs.org/incident/19840215011239I), Feb 15, 1984: Nihon YS11, Tulsa, OK. Nose gear locked left on landing. Left runway. Replaced NWS unit.

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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