As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FL 260, CLIMBING AT 300KTS, RT RED BOX SLASH GEAR UNSAFE INDICATION APPEARED. SPEED TAPE TURNED RED. AFTER SLOWING TO ABOUT 270KTS GEAR INDICATION RETURNED TO NORMAL AND REMAINED NORMAL. FLT WAS SMOOTH, NO VIBRATIONS. FOUND CORROSION ON RT MLG PROXIMITY SWITCH CABLE ASSY. REMOVED AND REPLACED HARNESS WITH NEW IAW 32-30-00. PERFORMED LANDING GEAR CYCLING AND VERIFIED INDICATION ON EICAS ALL OPS TESTED SATISFACTORY. IAW 32-10-11.