What was found
R/H AFT DRAG ANGLE IS CRACKED. REMOVED AND REPLACED RH AFT VERTICAL STAB DRAG ANGLE PN: AV670-21186-004 IAW CRJ900 SRM TASKS 51-40-11-001-001-A01, 51-42-13-001-001-A01, 51-42-21-001-001-A01, 51-42-22-001-001-A01, AND 51-23-00-001-001-A01.