What was found
ON DESCENT, GOT GEAR DOORS EICAS MSG AND AMBER GEAR DOORS LIGHT. SLOWED TO 250 KNOTS AND LIGHT AND MSG WENT OUT. FOLLOWED CHECKLIST AND RAISED GEAR HANDLE, C/W T/S ERP WAN AND TECH SUPPORT. ALSO, REMOVED AND REPLACED S243 AND S257 NOSE GEAR DOOR SWITCHES, SYS OPS NORMAL. CK'D NOSE GEAR DOORS GAPS AND MISMATCHES WITHIN M/M LIMITS; CHK'D SENSOR GAPS ON S234;S253;S256 AND S257 TO BE ATO .120 THOUS. CHK'D LONGITUDNAL SEAL OK FOR SERVICE, CK BULB SEAL GAP AT .200 W/DUCTS. REMOVED AND REPLACED NOSE GEAR DOOR SWITHCES. OPS CK NORMAL.