Runway excursion on landing by small transport.

Attributes
ACN	149453
Time
Date	199006
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lex
State Reference	KY
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 3100 flight time type : 800
ASRS Report	149453
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On landing rollout aircraft had a nose wheel steering malfunction and deflected right, causing the aircraft to exit the runway to the right. At the first indication I applied full left rudder, full left reverse an full left brake, and cycled the nose wheel steering button of the small transport. Upon realizing that I could not control the uncommanded right turn I applied full brakes and reverse from both sides and then pulled the stop and feather of both engines upon exiting the runway 22. The aircraft came to rest approximately 90' off runway 22. There was no damage or injuries to the aircraft or airport property. At no time during the excursion was a 'nose steer fail' light or flashing 'nose steering' light evident.

Original NASA ASRS Text

Title: RWY EXCURSION ON LNDG BY SMT.

Narrative: ON LNDG ROLLOUT ACFT HAD A NOSE WHEEL STEERING MALFUNCTION AND DEFLECTED R, CAUSING THE ACFT TO EXIT THE RWY TO THE R. AT THE FIRST INDICATION I APPLIED FULL L RUDDER, FULL L REVERSE AN FULL L BRAKE, AND CYCLED THE NOSE WHEEL STEERING BUTTON OF THE SMT. UPON REALIZING THAT I COULD NOT CONTROL THE UNCOMMANDED R TURN I APPLIED FULL BRAKES AND REVERSE FROM BOTH SIDES AND THEN PULLED THE STOP AND FEATHER OF BOTH ENGS UPON EXITING THE RWY 22. THE ACFT CAME TO REST APPROX 90' OFF RWY 22. THERE WAS NO DAMAGE OR INJURIES TO THE ACFT OR ARPT PROPERTY. AT NO TIME DURING THE EXCURSION WAS A 'NOSE STEER FAIL' LIGHT OR FLASHING 'NOSE STEERING' LIGHT EVIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.