As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PUT LANDING GEAR HANDLE DOWN TO LAND. LOUD BANG AND A/C SHUDDER. RIGHT HYDRAULICS LOST. RAN QRH PROCEDURES AND LANDED. FOUND R/H BOTTLE PIN BROKE. REPLACED BOTTLE PIN PER MD88 AMM 57-40-02 AND REPLACED R/H MLG RETRACT ACTUATOR PER MD88 AMM 32-32-02. LEAK CHECK AND OPS GOOD. CYCLED MLG SEVERAL TIMES WITH NO DEFECTS NOTED.