What was found
FLT 4554 - DURING FINAL APPROACH TO DFW AND AEX, THE CREW RECEIVED A NOSE GEAR DISAGREE MESSAGE AND PERFORMED A MISSED APPROACH. THE QRH WAS COMPLIED WITH AND AN EMERGENCY WAS DECLARED. AFTER COMPLYING WITH THE QRH THE GEAR INDICATED DOWN AND THREE GREEN LIGHTS WERE RECEIVED. THE AIRCRAFT LANDED SAFELY IN DFW WITH EMERGENCY TRUCKS FOLLOWING IT TO THE GATE. MAINTENANCE PERFORMED OPERATIONAL CHECKS OF FULL GEAR SWINGS FOR FIFTEEN CYCLES. NO DEFECTS WERE NOTED. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)