As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 HYDRAULIC SYSTEM LOSS PRESSURE AND QUANTITY ZERO. RUDDER STAND-BY POWER OFF, IGHT ON. REPAIRED LINE AND FOUND LOOSE B-NUT AT LT HORIZONTAL STABILIZER TRIM MOTOR. TIGHTENED B-NUT IAW DEIO M/M 20-10-0. PERFORMED OPERATIONAL CHECK, FOUND NORMAL IAW DEIO M/M 27-43-01. (S)