What was found
AIRCRAFT WAS GROUNDED: THE AIRCRAFT RETURNED TO CLT (NO EMERGENCY WAS DECLARED) DUE TO THE FLIGHT CREW REPORTING THAT AFTER TAKEOFF AT CLIMB POWER THE NUMBER TWO ENGINE BEGAN TO SURGE. IT WAS BAD ENOUGH THAT THE AIRCRAFT BEGAN TO SWAY. THE FLIGHT CREW REDUCED POWER AND RETURNED TO CLT. MAINTENANCE REPLACED THE BLEED PRESSURE REGULATOR VALVE CONROL THERMOSTAT SOLENOID 10HA2 PER AMM 36-11-55 (AALA202501280056) AND THE BLEED PRESSURE REGULATOR VALVE 4001HA DUE TO LEAKING AROUND THE BODY VALVE PER AMM 36-11-52. (AALA202501281177) A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED. WITH NO SURGES OR ENGINE FLUCTIONS NOTED.