WAKE TURB ENCOUNTER. INTRAIL B737-200 OF AN L1011; 15 DME; B737 HIT TURB CAUSING RAPID ROLLS L AND R WITH FLT ATTENDANTS THROWN AROUND IN ACFT. NO INJURIES; BUT MUCH STRESS.

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FYI. I HAD WHAT IS BEING CLASSIFIED AS A WAKE TURB ENCOUNTER ON MAY/FRI/96 AND YOUR OFFICE CALLED ME FOR THE 30 MIN QUESTION AND ANSWER INTERVIEW. I'M SENDING YOU ANOTHER ONE FOR YOU TO PUT IN YOUR STUDY TO SEND TO THE FAA SO (MAYBE) THEY WON'T REDUCE SPACING ON ACFT. STEP CLBING ON AIRWAY BEHIND L1011. HAD L1011 VISUALLY AND ON TCASII THE WHOLE RTE. WHEN WE HIT HIS WAKE; HE WAS 15 MI AHEAD; AND 2000 FT HIGHER. WE WERE DOING ECONOMY CLB; THROUGH FL198 FOR FL200. HAVING BEEN IN SEVERE WAKE BEFORE; I KNEW THAT THAT'S WHAT IT WAS. ACFT ROLLED ABRUPTLY L; THEN R; AND EVENTUALLY STABILIZED. NO GAIN OR LOSS OF ALT. CORRECTION: TOLD ATC THAT WE WERE GOING TO FLY A PARALLEL COURSE ON THE UPWIND (W) WIDE. HE SOON AFTER CLRED US DIRECT TO A FIX UP THE ROAD; WITH A CHANGE IN COURSE. LUCKILY; NO ONE WAS HURT (ONE OF OUR FLT ATTENDANTS WAS PREGNANT; TOO). NEXT TIME; I'LL STAY SLIGHTLY UPWIND OF COURSE! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: CALLBACK WAS IN CONJUNCTION WITH WAKE TURB INCIDENT CALLBACK QUESTIONNAIRE. THE ENCOUNTER CAUSED RPTR ACFT TO ROLL 25 DEGS BOTH L AND R BEFORE FLC WAS ABLE TO REGAIN CTL. THE VIOLENT ENCOUNTER THREW FLT ATTENDANTS AROUND THE ACFT; BUT NONE WERE INJURED; THOUGH IT CREATED A LOT OF DISCOMFORT AND STRESS.