What was found
R/H HORIZONTAL STAB. L/E; UPPER SLIDING SEAL CRACKED AT LOWER AFT ATTACHMENT AREA.<[01] REMOVED SLIDE SEAL ASSY & 2 EA CLOSEOUT PANELS IAW B737-800 SRM 51-40-02. RECIEVED NEW SLIDE SEAL PN#181A8025-2 PO#1097993.3 IAW B737-800 AIPC 53--31-31-03. LOCATED AND DRILLED NEW SLIDE SEAL IAW B737-800 SRM 51-40-05. INSTALLED SLIDE SEAL BRACKETS TO SLIDE SEAL IAW B737-800 AIPC 53-31-31-03 & SRM 51-40-02. INSTALLED SLIDE SEAL BRACKETS TO SLIDE SEAL IAW B737-800 AIPC 53-31-31-03 & SRM 51-40-02. INSTALLED 2 EA CLOSEOUT PANELS IAW B737-800 SRM 51-40-02.;[02] REMOVED SLIDE SEAL ASSY & 2 EA CLOSEOUT PANELS IAW B737-800 SRM 51-40-02. RECIEVED NEW SLIDE SEAL PN#181A8025-2 PO#1097993.3 IAW B737-800 AIPC 53--31-31-03. LOCATED AND DRILLED NEW SLIDE SEAL IAW B737-800 SRM 51-40-05. INSTALLED SLIDE SEAL BRACKETS TO SLIDE SEAL IAW B737-800 AIPC 53-31-31-03 & SRM 51-40-02. INSTALLED SLIDE SEAL BRACKETS TO SLIDE SEAL IAW B737-800 AIPC 53-31-31-03 & SRM 51-40-02. INSTALLED 2 EA CLOSEOUT PANELS IAW B737-800 SRM 51-40-02.. REVIEWED CARD AND WORK PROCEDURES