What was found
DURING C-CHECK INSPECTION WHILE COMPLYING WITH AD 89-08-10 AND S.B.'S A53-154 AND A53-223, FOUND RIGHT DORSAL FIN ATTACH ANGLE BUCKLED AND FASTENERS PULLED. REPLACED RIGHT DORSAL FIN ATTACH ANGLE IAW DC-9 SRM 53-05, FIGURE 23 AND SB'S A53-154 AND A53-223.