MOTOR DRIVEN HYDRAULIC CIRCUIT BREAKER TRIPPING (SUPERSEDED BY SL 737-SL-24-197 REV. A). SUPERSEDED SERVICE LETTER MOS SL 737-SL-24-197 REV. A ELECTRIC MOTOR DRIVEN HYDRAULIC CIRCUIT BREAKER TRIPPING. SERVICE LETTER RECOMMENDED MOS 20-MAR-2012 SI. 737-SL-24-198 POTENTIALLY INCORRECT CIRCUIT BREAKERS INSTALLED FOR STICK SHAKER AND MACH WARNIN