What was found
ON APPROACH TO AZO, THE GEAR WAS SELECTED DOWN AND THE CREW RECEIVED NO GEAR INDICATION. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND MANUALLY LOWERED THE GEAR. THE MAIN GEAR WAS GREEN BUT THE NOSE SHOWED IN TRANSIT. THE CREW DID A FLY BY TO ENSURE GEAR WAS DOWN. FLIGHT 4172 THEN LANDED WITH NO FURTHER INCIDENTS. ONCE ON THE GROUND, OUTSTATION MAINTENANCE CAME OUT AND PINNED THE GEAR BEFORE TAXIING TO THE GATE. THE AIRCRAFT WAS FERRIED TO PIT WHERE MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR SELECTOR VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-00-00. THE AIRCRAFT WAS THEN FERRIED TO CAK WHERE THE OPERATIONAL CHECKS WERE COMPLETED. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.