B757 ENCOUNTERED WINDSHEAR 3-5 MINS AFTER TKOF FROM BWI; CAUSED CABIN ATTENDANT RPTR TO QUESTION COMPANY'S POLICY TO SERVE FIRST DRINK 6 MINS AFTER TKOF.

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I STRONGLY BELIEVE THAT THERE COULD HAVE BEEN SERIOUS INJURIES IF FLT ATTENDANTS OR PAX HAD BEEN OUT OF THEIR JUMP SEATS OR SEATS AT THE TIME OF CLBOUT. MY SUGGESTION IS THAT FLT ATTENDANTS BE REQUIRED TO REMAIN IN THEIR JUMP SEAT UNTIL THE CLBOUT IS COMPLETED AND THE AIRPLANE HAS LEVELED OFF AT ITS CRUISING ALT. SVC PROCS REQUIRE THAT FLT ATTENDANTS MUST SERVE PAX WITHIN A SPECIFIED SHORT TIME. THIS IS RIDICULOUS AND SHOULD BE CHANGED. SAFETY IS IN ONE'S JUMP SEAT. WINDSHEAR IS LIKELY TO OCCUR ON TKOFS AND APCHS TO LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT THIS IS THE MOST SEVERE TURB SHE HAS EXPERIENCED IN 33 YRS OF FLYING. BOTH THE UNION AND THE COMPANY SENT LETTERS REGARDING THE INCIDENT. THE COMPANY THANKED ALL THE CABIN CREW FOR THEIR PROFESSIONALISM IN HANDLING THE SIT. DRIVING TO WORK SHE HAD NOTICED THE STORM MOVING RAPIDLY OUT OF THE AREA FOLLOWED BY CLR BLUE SKIES SO THIS WAS COMPLETELY UNEXPECTED. IT TOOK EVERYONE BY SURPRISE ACCORDING TO THE JUMP SEAT RIDER. THE MAJOR PROB WAS THE PROX TO THE GND. THE ACFT WAS TAKEN OTS AT THE DEST FOR A SAFETY INSPECTION DUE TO THE EXTREME G FORCES EXPERIENCED. RPTR'S MAIN CONCERN IS A COMPANY REG WHICH REQUIRES THE FLT ATTENDANTS TO BE SERVING THE FIRST DRINK IN ABOUT 6 MINS AFTER DEP. RPTR FEELS THIS IS TOO DANGEROUS AND THAT THEY SHOULD REMAIN SEATED UNTIL AT CRUISE ALT; OUT OF THE WX OF THE LOWER ALTS.