As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 001 FROM MIA TO PTY. AFTER TAKEOFF ROTATION, CREW HEARD A LOUD NOISE IN THE COCKPIT AND WAS UNABLE TO PRESSURIZE AIRCRAFT. AIRCRAFT RETURNED TO MIA AND LANDED WITHOUT INCIDENT. FOUND THE E&E COMPARTMENT DOOR OPEN. UPON FURTHER INSPECTION, FOUND A BROKEN WIRE AT TERMINAL IN THE E&E BAY DOOR SWITCH. INSTALLED NEW TERMINAL IAW STANDARD PRACTICES 20-11 AND OPS CHECK DOR SYSTEM IAW MM 52-40-0. AIRCRAFT RETURNED TO SERVICE.