What was found
SKIN DAMAGE AT STR 21R (2 SPOTS) JUST FWD OF FRAME 500F. COMPLIED WITH ER/A 634484-14 REV ORIGINAL PRI REV "0", "1","2" REPAIR INSTRUCTIONAL STEPS, ENSURE ALL ER/A 634484-14 REV ORIGINAL PRI REV "0", "1","2" REPAIR INSTRUCTIONAL STEPS ARE COMPLETED AND MATCH FINAL B737-900ER / FUSELAGE SKIN / FR500F / STR 21R / DAMAGE- ER/A 634484-14 REV ORIGINAL. (LOG 1604436 - AIRCRAFT WAS GROUNDED).