Narrative:

As a fairly high time pilot operating advanced turboprop and jet aircraft as PIC, it must not be forgotten the need for proper aircraft familiarization and handling characteristics. A normal landing was made into a 4000 ft paved dry strip. The aircraft braked unevenly and steering was difficult. The aircraft was in full reverse and maximum braking was initiated, wheel lock-up occurred and the aircraft was stopped on the remaining runway surface. However, during the rollout, the main gear 'right side and nose gear' left the paved landing surface. No damage to aircraft, no injury, no property damage. A thorough preflight showed no evidence of aircraft malfunction. Further investigation suggested a leaky seal. Right main gear caused fluid to leak on aircraft brake and cause direction problems due to nonproportional braking. Lesson learned: train with all new equipment no matter what the pilot qualifications are. Initiate all braking immediately after touchdown (corporate pilots often fly for the passenger comfort). Wear shoes that properly interact with the aircraft pedal design. The first time you accept aviation as redundant you will see something very new.

Google
 

Original NASA ASRS Text

Title: SMT JET LNDG ON 4000 FT STRIP AT NIGHT HAD NON PROPORTIONAL BRAKING. R MAIN GEAR WENT OFF RWY. ACFT WAS STOPPED ON RWY, BARELY.

Narrative: AS A FAIRLY HIGH TIME PLT OPERATING ADVANCED TURBOPROP AND JET ACFT AS PIC, IT MUST NOT BE FORGOTTEN THE NEED FOR PROPER ACFT FAMILIARIZATION AND HANDLING CHARACTERISTICS. A NORMAL LNDG WAS MADE INTO A 4000 FT PAVED DRY STRIP. THE ACFT BRAKED UNEVENLY AND STEERING WAS DIFFICULT. THE ACFT WAS IN FULL REVERSE AND MAX BRAKING WAS INITIATED, WHEEL LOCK-UP OCCURRED AND THE ACFT WAS STOPPED ON THE REMAINING RWY SURFACE. HOWEVER, DURING THE ROLLOUT, THE MAIN GEAR 'R SIDE AND NOSE GEAR' LEFT THE PAVED LNDG SURFACE. NO DAMAGE TO ACFT, NO INJURY, NO PROPERTY DAMAGE. A THOROUGH PREFLT SHOWED NO EVIDENCE OF ACFT MALFUNCTION. FURTHER INVESTIGATION SUGGESTED A LEAKY SEAL. R MAIN GEAR CAUSED FLUID TO LEAK ON ACFT BRAKE AND CAUSE DIRECTION PROBLEMS DUE TO NONPROPORTIONAL BRAKING. LESSON LEARNED: TRAIN WITH ALL NEW EQUIP NO MATTER WHAT THE PLT QUALIFICATIONS ARE. INITIATE ALL BRAKING IMMEDIATELY AFTER TOUCHDOWN (CORPORATE PLTS OFTEN FLY FOR THE PAX COMFORT). WEAR SHOES THAT PROPERLY INTERACT WITH THE ACFT PEDAL DESIGN. THE FIRST TIME YOU ACCEPT AVIATION AS REDUNDANT YOU WILL SEE SOMETHING VERY NEW.

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.