NG. SERVICE LETTER RECOMMENDED MOS 26-JUL-2010 SL 737-SL-27-221 INCORRECT USE OF CAD PLATED SCREWS WITH TITANIUM PROXIMITY SENSOR P/N 80-207-01 ON WING LEADING RECOMMENDED EDGE. SERVICE LETTER MOS 20-AUG-2010 SL 737-SL-27-222 AILERON CENTERING MECHANISM LEVER DELIVERED WITH MINOR ASSEMBLY DAMAGE, SERV