LR25 exits the runway during landing roll.

Attributes
ACN	344250
Time
Date	199608
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ase
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Learjet 25
Operating Under FAR Part	Part 91
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 6500 flight time type : 30
ASRS Report	344250
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
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:

Upon landing, LR25, touched down normally. It tracked normally down the centerline and the thrust reversers were deployed and decelerating the aircraft. While slowing through approximately 80 KTS the aircraft veered sharply to the left of the centerline. I used right rudder to correct the deviation and the aircraft veered severely to the right causing a sideways skid, which brought the aircraft off the right side of the runway before it came to a full stop. No one was injured, and the aircraft sustained only 3 blown tires. Chain of events: 1) the problem was caused by not doing a thorough preflight, 2) the rudder trim tab was deflected almost full right, however, the tab indicator in the cockpit was centered, 3) I discovered the tab when I did a post flight check around the aircraft, and 4) during preflight when I see a problem such as trim tab out of position I will go in the cockpit, center the tab and note the indication on the indicator. I believe that the trim tab being out of adjustment caused the aircraft to veer left which set up the following events.

Original NASA ASRS Text

Title: LR25 EXITS THE RWY DURING LNDG ROLL.

Narrative: UPON LNDG, LR25, TOUCHED DOWN NORMALLY. IT TRACKED NORMALLY DOWN THE CTRLINE AND THE THRUST REVERSERS WERE DEPLOYED AND DECELERATING THE ACFT. WHILE SLOWING THROUGH APPROX 80 KTS THE ACFT VEERED SHARPLY TO THE L OF THE CTRLINE. I USED R RUDDER TO CORRECT THE DEV AND THE ACFT VEERED SEVERELY TO THE R CAUSING A SIDEWAYS SKID, WHICH BROUGHT THE ACFT OFF THE R SIDE OF THE RWY BEFORE IT CAME TO A FULL STOP. NO ONE WAS INJURED, AND THE ACFT SUSTAINED ONLY 3 BLOWN TIRES. CHAIN OF EVENTS: 1) THE PROB WAS CAUSED BY NOT DOING A THOROUGH PREFLT, 2) THE RUDDER TRIM TAB WAS DEFLECTED ALMOST FULL R, HOWEVER, THE TAB INDICATOR IN THE COCKPIT WAS CTRED, 3) I DISCOVERED THE TAB WHEN I DID A POST FLT CHK AROUND THE ACFT, AND 4) DURING PREFLT WHEN I SEE A PROB SUCH AS TRIM TAB OUT OF POS I WILL GO IN THE COCKPIT, CTR THE TAB AND NOTE THE INDICATION ON THE INDICATOR. I BELIEVE THAT THE TRIM TAB BEING OUT OF ADJUSTMENT CAUSED THE ACFT TO VEER L WHICH SET UP THE FOLLOWING EVENTS.

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.