As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF A VERY LOUD CONTINUOUS & RANDOM CLACKING OR SPARKING SOUNDS WERE IMMEDIATELY HEARD IN THE COCKPIT. FLIGHT RETURNED WITHOUT INCIDENT. TRANSFERRED TO NRWC 646-ABI-02199. R & R BUSHINGS TO RAM AIR VLV & ADJUSTED LINEAR ACTUATOR IAW AMM 21-25-03. NO FURTHER DEFECTS NOTED. OPERATIONS CHECKED GOOD. SEE NRWC 646 ABI-02199 FOR CERTS & TURNOVER.