What was found
RT NACELLE AFT EXHAUST CHANNEL, PN 85414389-105 FOUND CRACKED ACROSS ALL 4 BOLT HOLES. REMOVED AFT EXHAUST CHANNEL, PN:85414389-105 IAW SRM 51-42-05-02-01, SRM 51-40-15-02-01. AFT EXHAUST ON RT NACELLE CHANNEL NEW, PN:85414389 INSTALLED REF SRM 51-40-15/51-42-05.