What was found
CORROSION ON STGR 21RH BTW FS394.00 TO FS 409.00 AT MAIN AVIONICS COMPARTMENT STGR 21RH BTW FS394.00 TO FS 409.00 AT MAIN AVIONICS COMPARTMENT WAS REPAIRED AND SFECU 2, COVER, RACK AND GS (GS484, GS454, GS464) WERE REMOVED/INSTALLED OPS CHECK GOOD PER EA CRJ953-20595 REV IR, AMM 27-51-05-000-801-A01, AMM 27-51-05-400-801-A01 AND ESPM 20-26-00.