As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FLIGHT LEVEL 31.0 HEARD LOUD BANG NOISE UNDER COCKPIT AREA, ALSO ON APPROACH LOWERING GEAR LARGE BANG AND AIRCRAFT SHOOK. AIRCRAFT LANDED WITHOUT INCIDENT. FOUND LT NOSE LANDING GEAR SIDE BRACE RETRACT ACT LUG BROKEN. REMOVED AND REPLACED LT NOSE LANDING GEAR SIDE BRACE IAW MM 32-2-0. PERFORMED NOSE LANDING GEAR OPS CHECK IAW MM 32-2-0. OPS NORMAL, NO LEAKS NOTED.