As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BROKEN SWITCH PRESSURE SUPPORT BRACKET (40MJ) IN FWD AVIONIC COMPARTMENT. REMOVED AND REPLACED PRESSURE SWITCH 40MJ IAW AMM 52-71. PERFORMED LEAK TEST OF THE PRESSURE LINE AND PERFORMED OPERATIONAL TEST OF THE CABIN PRESSURE SWITCH. ALL TESTS ARE GOOD. NO FOUND LEAK.