What was found
UPON TAXI INTO KTHV RT PILOT LOST BRAKES MOMENTARILY WITH POWER BRAKE LOW PRESSURE LIGHT ON. BRAKE RESERVOIR IS LOW. LT WHEEL WELL AND FLAP COVERED IN FLUID. FOUND LOOSE B-NUT IN LT WHEEL WELL ON BRAKE LINE, TIGHTENED LINE, SERVICED BRAKE RESERVOIR, BLED BOTH BRAKES, RESERVICED RESERVOIR, CLEANED WHEEL WELL. LEAK CHECK GOOD, TAXI CHECK GOOD, RESET RCDR. ALL WORK DONE IAW CESSNA CITATION ULTRA MAINTENANCE MANUAL 32-42-00, 12-12-02 CORP.