Runway excursion during takeoff procedure.

Attributes
ACN	203170
Time
Date	199202
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : l35
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : leb
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : takeoff ground other : taxi
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Experience	flight time last 90 days : 94
ASRS Report	203170
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other

Narrative:

Runway 24, dry taxiway, melting snow (water) flowing across low spots on taxiway. S-turned about 2000 ft before intersection for takeoff. Announced intentions and started takeoff run. Aircraft started to lift too soon. 5-10 mph headwind. Pushed nose back down to gather more speed (6750 ft elevation) for takeoff. About 1000 ft into run, aircraft started veering to right. All attempts to straighten run were to no avail (about 15 seconds). It felt as though right tire had blown out, or brake had grabbed. After incident, local FBO told me that examination of runway prior to leaving pavement indicated right gear was skidding or had locked after takeoff run was started. We have no explanation as to why this happened, unless 'something' had become wedged in brakes, causing this malfunction. My taxiing gave me no indication of any problem. Had anything appeared or felt not right, I would not have attempted the takeoff.

Original NASA ASRS Text

Title: RWY EXCURSION DURING TKOF PROC.

Narrative: RWY 24, DRY TAXIWAY, MELTING SNOW (WATER) FLOWING ACROSS LOW SPOTS ON TAXIWAY. S-TURNED ABOUT 2000 FT BEFORE INTXN FOR TKOF. ANNOUNCED INTENTIONS AND STARTED TKOF RUN. ACFT STARTED TO LIFT TOO SOON. 5-10 MPH HEADWIND. PUSHED NOSE BACK DOWN TO GATHER MORE SPD (6750 FT ELEVATION) FOR TKOF. ABOUT 1000 FT INTO RUN, ACFT STARTED VEERING TO R. ALL ATTEMPTS TO STRAIGHTEN RUN WERE TO NO AVAIL (ABOUT 15 SECS). IT FELT AS THOUGH R TIRE HAD BLOWN OUT, OR BRAKE HAD GRABBED. AFTER INCIDENT, LCL FBO TOLD ME THAT EXAMINATION OF RWY PRIOR TO LEAVING PAVEMENT INDICATED R GEAR WAS SKIDDING OR HAD LOCKED AFTER TKOF RUN WAS STARTED. WE HAVE NO EXPLANATION AS TO WHY THIS HAPPENED, UNLESS 'SOMETHING' HAD BECOME WEDGED IN BRAKES, CAUSING THIS MALFUNCTION. MY TAXIING GAVE ME NO INDICATION OF ANY PROBLEM. HAD ANYTHING APPEARED OR FELT NOT RIGHT, I WOULD NOT HAVE ATTEMPTED THE TKOF.

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.