What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED & ACFT RETURNED TO PHL DUE TO FLT CREW REPORTING THE GEAR HANDLE WOULD NOT MOVE TO RETRACT GEAR ALONG WITH A MLG SHOCK ABSORBER FAULT MESSAGE WHICH DISAPPERARED & GEAR HANDLE WAS THEN ABLE TO BE MOVED TO RETRACT GEAR WHICH THEN A NLG STEERING FAULT MESSAGE DISPLAYED, AFTER CONSUTING WITH MOC, DETERMINED TO RETURN TO PHL, THE FLT CREW STARTED PROCESS TO EXTEND GEAR EARLY & REPORTED IT TOOK LONGER THAN USUAL FOR GEAR TO EXTEND & HAD TO MANULLY SELECT WHEEL PAGE ON THE LOWER ECAM WHICH INDICATED THAT GEAR DOWN AND LOCKED. ACFT LANDED SAFELY AT PHL & AFTER VERIFYING NLG STEERING SYS FUNCTIONAL, ACFT TAXIED TO GATE UNDER ITS OWN POWER, MAINT REPORTED DURING A GEAR SWING DOORS OPS PROPERLY BUT GEAR SLOW TO COME UP, TOOK ABOUT 45 SECS TO FULLY RETRACT THE GEAR - MAINT REPLACED MLG & DOOR SELECTOR MANIFOLD VALVE 2524GM AND ACCOMPLISHED A SATISFACTORY OPS CHKD WITH NO ISSUES OR FAULT MESSAGES NOTED