As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE CREW REPORTED A LOUD VIBRATION HEARD THROUGHOUT THE AIRCRAFT AFTER RETRACTING THE FLAPS AND RETURNED TO FIELD WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INITIALLY FOUND A LOOSE SEAM ON THE LEFT RAM AIR INLET AND REPLACED THE LEFT RAM AIR VALVE ASSEMBLY. THE CHECK FLIGHT THAT FOLLOWED FAILED TO CONTINUED VIBRATION. MAINTENANCE THEN PERFORMED A ZERO RIG FLAP RIG AND REPLACED 3 MAIN LANDING GEAR DOOR RODS WITH NO FURTHER DEFECTS REPORTED DURING TEST FLIGHT.