What was found
ORD - FLT 2358 - DURING APPROACH TO ORD IN ICING CONDITIONS WHEN LANDING GEAR EXTENDED, NOSE LANDING GEAR INDICATED UNSAFE. RECYCLED LANDING GEAR TWO CYCLES AND ALL INDICATIONS RETURNED TO NORMAL WITH GEAR EXTENDED. AIRCRAFT LANDED ORD WITHOUT INCIDENT. ACCOMPLISHED NOSE LANDING GEAR RETRACTION CHECK SEVERAL CYCLES WITH NO DEFECTS FOUND. UNABLE TO DUPLICATE DISCREPANCY AND AIRCRAFT RETURNED TO SERVICE. (M)