As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE C CHECK INSPECTION, A CRACK WAS DETECTED ON THE RIGHT HORIZONTAL STABILIZER AFT SPAR WEB INTERNAL DOUBLER AT STATION XE 105. REPAIR ACCOMPLISHED REMOVAL OF DAMAGE AREA, FABRICATION AND INSTALLATION A NEW INTERNAL DOUBLER IN ACCORDANCE WITH DOUGLAS STRUCTURAL REPAIR MANUAL AND ENGINEERING ORDER 53-DC8-1786.