As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C KEEL BEAM BS 900 APPROX APU COMPARTMENT ACCESS PANEL SHOWS A HOLE AND CRACKED AREA. CUT DAMAGED AREA AT KEEL BEAM ACCESS PANEL BS 900 APU COMPARTMENT AS PER B727 SRM 51-10-1, INSTALLED DOUBLER ON KEEL BEAM ACCESS PANEL AS PER B727 SRM 51-40-2 FIG 1.