What was found
CRACK FOUND ON LT HORIZONTAL STAB INSPAR RIB #4 STAB STA 120.30 AT LOWER SECTION OF VERTICAL STIFFENER #3 FROM FWD TO AFT DOT 107-013 / CUTOUT DAMAGED SECTION ON RIB #4 AND STIFFENER #3 PERE REF B737-55-10-09-2R-4; DRILLED 3 EA HOLES TO OVERSIZE .1985 TO REMOVED CRACK. INDICATION; LOCATED AND DRILLED REPAIR PARTS PER REF B737 SRM 55-10-09-2R-4. TREATED ANND PRIMED AREA AND REPAIRED PARTS PER REF B737 AMM 51-21-41-370-802 AND 51-21-72-370-804. INSTALLED REPAIR PARTS ON RIB #4 AND STIFFNER #3 PER REF B737 SRM 55-10-09-2R-4 REPAIR 4 FIG 202