What was found
IND - FLT 569 - ON APPROACH TO IND WHEN THE LANDING GEAR WAS SELECTED DOWN, THE NOSE GEAR DID NOT INDICATE DOWN AND LOCKED. CREW PERFORMED A GO AROUND PROCEDURE AND RECYCLED THE LANDING GEAR BUT THE GEAR STILL DID NOT INDICATE DOWN AND LOCKED. AN ALTERNATE GEAR EXTENSION WAS NOT SUCCESSFUL IN EXTENDING THE NOSE GEAR. AS A TOWER FLY BY WAS ABOUT TO BE ACCOMPLISHED, THE NOSE GEAR EXTENDED AND A PROPER DOWN AND LOCKED INDICATION ILLUMINATED. THE FLIGHT LANDED IND WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND ICE AND SNOW IMPACTED AROUND THE NOSE GEAR DOWN/LOCKED SWITCH. THEY CLEANED AND LUBRICATED THE NOSE GEAR ACTUATION SYSTEM. THE LANDING GEAR AND INDICATION SYSTEM THEN TESTED PROPERLY. (M)