What was found
GPS ANTENNA RH HAS CORROSION ON MATING SURFACE, FS409.00+32, STR 0.0. REMOVED AND REPLACED WITH A NEW GPS ANTENNA AT FS409.00+32, STR 0.0. PN S67-1575-52 / SN 512-32090. ALL WORK WITHIN LIMITS WAS PERFORMED IAW CRJ200 AMM 34-58-400-801, REV 64. WORK PERFORMED UNDER AERSALE WORK ORDER 003442, CARD NO. 20007 / 20193, TT: 39871:10 TC: 39263.