What was found
LOUD AIR NOISE FROM COCKPIT ESCAPE HATCH WHEN PRESSURE ABOVE 1 PSI. REPLACED HATCH ASSEMBLY, OPERATIONAL CHECKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOUD AIR NOISE FROM COCKPIT ESCAPE HATCH WHEN PRESSURE ABOVE 1 PSI. REPLACED HATCH ASSEMBLY, OPERATIONAL CHECKS GOOD.