What was found
INTERNAL STRUCTURE LOWER TCAS ANTENNA DOUBLER AT FS 300.00, STR 27 AREA CORRODED. REMOVED TCAS ANTENNA DOUBLER AND DRAME CLEET, LOCATED DRILLED, INSTALLED AND SEALED DOUBLER AND FRAME CLEET IAW CRJ 900 SRM 51-42-06-001-001-A01, 51-40-11-001-001-A01, 51-42-21-001-001-A01, 51-21-11-001-001-A01 REMOVED LOWER TCAS ANTENNA IAW CRJ 900 AMM 34-43-07-000-801-A02 SEE JOB 1 OP:285 FOR INSTALL AND SEAL. REMOVED AND REPLACED 1 HILITE ON STR 27 IAW CRJ 900 SRM 51-42-06-001-001-A01.