As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW REPORTED LOWER THAN NORMAL CABIN DIFFERENTIAL PRESSURE. A GROUND PRESSURIZATION CHECK WAS CARRIED OUT AND FOUND LEAK IN AREA OF AFT PRESSURE BULKHEAD LOWER SECTION. FURTHER INSPECTION REVEALED A CRACK IN THE BEND RADIUS OF ANGLE P/N 320035-501. P/N M690003-4 FIGURE 2-56D ITEM II. NEW ANGLE INSTALLED AND SEALED. GROUND PRESSURIZATION CHECK CARRIED OUT OKAY. (TC NR 20070115012)