Light transport drifted off the runway during landing roll and came to stop with nose wheel in the g...

Attributes
ACN	92829
Time
Date	198808
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : tys
State Reference	TN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 2700 flight time type : 180
ASRS Report	92829
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 191 flight time total : 3000 flight time type : 747
ASRS Report	92259
Events
Anomaly	other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During the landing rollout the aircraft began to veer to the right. In an effort to assist the captain I attempted to apply full left rudder and found that the captain had already done so. I observed that the nose steering armed light was extinguished and advised captain. The aircraft came to rest with the nose wheel in the grass. The captain then advised me that he had disarmed the steering earlier fearing there had been a nose wheel steering failure. In hindsight it seems that more effective use of differential reverse and differential braking may have kept the aircraft on the runway. Callback conversation with reporter revealed the following: when it departed the runway, the aircraft had turned somewhat more than 45 degrees. There was no damage. Maintenance could find nothing wrong with the nose wheel steering. The right brake was replaced as a precaution although nothing definite could be found wrong with it. There were tire marks on the runway, but it could not be determined if they were caused by a dragging brake or the side loads of the turn off the runway. Nothing more has been heard re: the incident. The winds were light and no apparent effect.

Original NASA ASRS Text

Title: LTT DRIFTED OFF THE RWY DURING LNDG ROLL AND CAME TO STOP WITH NOSE WHEEL IN THE GRASS.

Narrative: DURING THE LNDG ROLLOUT THE ACFT BEGAN TO VEER TO THE RIGHT. IN AN EFFORT TO ASSIST THE CAPT I ATTEMPTED TO APPLY FULL LEFT RUDDER AND FOUND THAT THE CAPT HAD ALREADY DONE SO. I OBSERVED THAT THE NOSE STEERING ARMED LIGHT WAS EXTINGUISHED AND ADVISED CAPT. THE ACFT CAME TO REST WITH THE NOSE WHEEL IN THE GRASS. THE CAPT THEN ADVISED ME THAT HE HAD DISARMED THE STEERING EARLIER FEARING THERE HAD BEEN A NOSE WHEEL STEERING FAILURE. IN HINDSIGHT IT SEEMS THAT MORE EFFECTIVE USE OF DIFFERENTIAL REVERSE AND DIFFERENTIAL BRAKING MAY HAVE KEPT THE ACFT ON THE RWY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: WHEN IT DEPARTED THE RWY, THE ACFT HAD TURNED SOMEWHAT MORE THAN 45 DEGS. THERE WAS NO DAMAGE. MAINT COULD FIND NOTHING WRONG WITH THE NOSE WHEEL STEERING. THE RIGHT BRAKE WAS REPLACED AS A PRECAUTION ALTHOUGH NOTHING DEFINITE COULD BE FOUND WRONG WITH IT. THERE WERE TIRE MARKS ON THE RWY, BUT IT COULD NOT BE DETERMINED IF THEY WERE CAUSED BY A DRAGGING BRAKE OR THE SIDE LOADS OF THE TURN OFF THE RWY. NOTHING MORE HAS BEEN HEARD RE: THE INCIDENT. THE WINDS WERE LIGHT AND NO APPARENT EFFECT.

Data retrieved from NASA's ASRS site as of August 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.

Light transport drifted off the runway during landing roll and came to stop with nose wheel in the grass.