As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ON APPROACH FOR A EVALUATION FLIGHT ON AIRCRAFT. THE CREW MADE A GO-AROUND AND DECLARED AN EMERGENCY DUE TO THE LANDING GEAR NOT EXTENDING. THE CREW PERFORMED THE APPROPRIATE QRH CHECKLIST FOR A MANUAL GEAR EXTENSION. THE LANDING GEAR SUCCESSFULLY EXTENDED. THE ACFT LANDED WITHOUT FURTHER INCIDENT AND TAXIED TO THE GATE. MAINTENANCE IS TROUBLESHOOTING. REPLACED LANDING GEAR CONTROL LEVER IAW JIC 32-31-81, RAI 10000. NORMAL EXTENSION AND RETRACTION FUNCTIONAL TEST CHECKED GOOD IAW JIC 32-31-00, FUT 10000.