As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE HEAVY MAINTENANCE CHECK AT FLIGHT STAR AIRCRAFT SERVICES AT JAX, IT WAS DISCOVERED THAT THE BS 1303 VENTRAL STAIR STRINGER WAS CRACKED. ACCOMPLISHED REPAIR IAW BOEING SRM 52-10-1/53-10-3. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)