What was found
ABQ - EMERGENCY EQUIPMENT FAILURE - FLT 0757 - DURING DESCENT INTO ABQ FOR CAPTAINS WINDSHIELD FAILURE WITH CREW OXYGEN MASKS DONNED, THE CAPTAINS MASK BECAME FOGGED UP. WHEN EMERGENCY POSITION WAS SELECTED ON THE MASK AIRFLOW AND ABILITY TO SPEAK WERE INHIBITED. MAINTENANCE REMOVED AND REPLACED CAPTAINS OXYGEN MASK IAW T/C R1B35001, FUNCTIONAL TEST WAS GOOD. VENDORS TEST OF FULL FACE MASK S/N 06091, CONFIRMED REASON FOR REMOVAL FOR INOPERATIVE HOSE SWIVEL SCREW. REPLACED MASK, HOSE SWIVEL SCREW, AND O-RINGS, FINAL TEST WAS GOOD IAW CMM 35-10-60.