As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SAFETY VALVE FAILED TON OPEN WHEN CARRYING OUT 1500 HOUR PRESSURIZATION CHECK. FAILED SAFETY VALVE WAS REMOVED AND VALVE AND SENSE LINE WERE FOUND CONTAMINATED WITH JET FUEL. FUEL APPEARED TO HAVE COME FROM A PREVIOUSLY SEEPING FUEL FILTER BOWL SEAL AND HAD ENETRED THE OUTFLOW VALVE WHERE THE AMBIENT PRESSURE SENSE LINE PROTRUDES THROUGH THE PRESSURE BULKHEAD (APPROX 12 -14 INCHES AFT OF THE FUEL BOWL).