WAKE ENCOUNTER -- ALTDEV ALT OVERSHOT. THIS ACR ENCOUNTERS THE WAKE OF A PRECEDING ACR AND WHILE INVOLVED IN RECOVERY AND AVOIDANCE MANEUVERS THE FLC OVERSHOOTS THE ASSIGNED ALT.

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FOR TKOF AT EWR WE WERE GIVEN THE NEWARK 4 DEP (CLB ON 195 DEG HDG TILL 3 DME; THEN R TURN TO 220 DEG UP TO 5000 FT) FOR RWY 22R. WE HAD BEEN GIVEN 2500 FT VERSES 5000 FT. WE DEPARTED BEHIND AN ACR B727 AND AT APPROX 1000 FT MSL WE ENCOUNTERED WAKE TURB. WE ROLLED R; AND I; THE PF; COUNTERED THE TURB. I HEARD '1000 FT TO GO' AT 1500 FT MSL. WE WERE GIVEN A FURTHER R TURN TO 310 DEGS; AND TO THE BEST OF MY KNOWLEDGE WE ENCOUNTERED A LESS SEVERE VERSION OF WAKE TURB. I HEARD THE CAPT CALL 2500 FT AND SAW WE WERE AT 2900 FT; CLBING. I SLOWED THE ASCENT AND HEARD THE CTLR ASK FOR ASSIGNED ALT; THE CAPT RESPONDED '2500 FT.' TO THE BEST OF MY KNOWLEDGE WE HAD GOTTEN BACK TO 2500 FT AND WERE GIVEN A CLB TO 5000 FT. I NEVER HEARD '500 TO GO' A STANDARD CALLOUT. I ADMIT I WAS EXTREMELY CONCERNED WITH THE WAKE TURB; AND FOR A SECOND THOUGHT WE WERE DOING THE NORMAL NEWARK 4 DEP (UP TO 5000 FT). WE (CAPT HELPED) IMMEDIATELY CORRECTED AND EXPLAINED THE CIRCUMSTANCES TO THE CTLR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR WAS AN FO ON A JETSTREAM 4100 AND WAS FLYING NEWARK 4 SID BEHIND A B727. THE B727 HAD DEPARTED RWY 22R ABOUT 2 MINS BEFORE THE JETSTREAM. SHORTLY AFTER TKOF THE RPTR ENCOUNTERED THE B727'S WAKE AND THE EFFECT BECAME MORE INTENSE UNTIL AT ABOUT 1500 FT HE EXPERIENCED A RAPID ROLL TO THE R OF ABOUT 30 DEGS. THEREAFTER; HE EXPERIENCED SEVERAL OTHER ROLLING MOMENTS THAT WERE LESS SEVERE AND DURING ALL OF THIS HE FORGOT TO LEVELOFF. THE FO OVERSHOT THE ASSIGNED ALT BY 400 FT AND BOTH HE AND THE CAPT PUSHED OVER AND DSNDED TO 2500 FT. THEY WERE CLRED TO 5000 FT SHORTLY AFTER RETURNING TO THEIR PROPER ALT. SINCE THIS RPT THE FO HAS EXPERIENCED 3 OTHER WAKE ENCOUNTERS AND HE NOW SPACES HIMSELF CAREFULLY BEHIND LARGE ACFT. HE SAID THAT HE WILL SEND RPTS OF ANY FUTURE WAKE ENCOUNTERS.