What was found
DURING SHOP VISIT, THE IB AFT CLOSEOUT RIB WAS FOUND CRACKED. THE RIB WAS REPAIRED PER 727 MM 57-52-0 BY STOP DRILLING THE CRACK AND INSTALLING A DOUBLER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING SHOP VISIT, THE IB AFT CLOSEOUT RIB WAS FOUND CRACKED. THE RIB WAS REPAIRED PER 727 MM 57-52-0 BY STOP DRILLING THE CRACK AND INSTALLING A DOUBLER.