What was found
AFTER TAKE OFF, GEAR WOULD NOT COME UP. EICAS MESSAGE: LDG AIR/GROUND FAIL. AFTER LANDING, IC 1-2 INOP. FOUND R/H MLG WOW #2 BRACKET BOLT EXCESSIVELY LOOSE. REMOVED SAFETY, TIGHTENED BOLT, AND RESAFTIED. OPS CHECK GOOD ON 2 GEAR SWINGS.