What was found
DURING THE INITIAL CLIMB-OUT, THE CREW NOTED A THUMP SOUND AND A SLIGHT VIBRATION ON THE RUDDER PEDALS. NO OTHER INDICATIONS OF ANYTHING ABNORMAL WERE INDICATED, AND THE FLIGHT CONTINUED TO PIT AND LANDED WITHOUT FURTHER INCIDENT. DURING THE POST FLIGHT INSPECTION, A PORTION OF THE HYDRAULIC SERVICE DOOR WAS NOTED TO BE MISSING FROM THE AIRCRAFT. MAINTENANCE INSPECTED THE AIRCRAFT FOR ANY FURTHER DAMAGE, AND REPLACED THE HYDRAULIC ACCESS DOOR, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 06-40-02.