As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HVY CK FOUND VERTICAL STAB REAR SPAR AFT FACE CRACK FOUND AT RIB 9/10. REPLACED V-STAB AFT RIB 9/10 PN 170-63629-005. IAW SRM 51-41-02, 51-41-01. SEE AAR NRC # 4500889-3000-0034 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.