As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN FOR ACCEPTANCE/BRIDGE PACKAGE MAINTENANCE FOUND RIB 10A CRACKED ON RH HORIZONTAL STAB; UPPER SURFACE ATTACH FLANGE @ 6TH FASTENER HOLE FROM THE FRONT. REMOVED DAMAGED RIB 10A (P/N 170-62571-602) AND REPLACED IAW EMB SRM 51-40-08. SEE W/O H6673, SN# 0112 FOR WORK PERFORMED. (MAJOR: FCS# 55-10-00-005)