As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY EXIT WINDOW AND CABIN DOOR SEAL LEAKAGE CAUSING CYCLING OF SEAL PRESSURE SWITCH. PILOT WAS SEEING CONSTANT GYRO PRESSURE FLUCTUATIONS ON COCKPIT INSTRUMENT PRESSURE GAUGE AND PREMATURE PRESSURE PUMP FAILURE. CAUSE WAS FOUND TO BE A CRACKED BULKHEAD .25 INCH PIPE ALUMINUM FITTING, NO PART NUMBER GIVEN IN PARTS MANUAL.