What was found
THE WIFI AFT ATG ANTENNA DOUBLER HAS CORROSION ON THE EXTERIOR SURFACE AND FRETTING CORROSION ON MATING SURFACE FOR ANTENNA. (MARKED) (C-CHECK RO 8/24/2024) REMOVED AND INSTALLED NEW EXTERNAL DOUBLER AT WIFI AFT ATG ANTENNA BETWEEN FS1000-FS1050 STGR 25R-STGR 26R REF. CRJ-900 SRM, 51-42-21-001-001-A01, 51-42-20-001-001-A01 AND DWG P13112-20110 REV H. COMPLIED WITH TASK CARD 51-900-1002-SKY, LEAK CHECKS GOOD.