CABIN ATTENDANT RPT; B777; NRT-ZZZ; ON TKOF; PLANE HIT WINDSHEAR AT 10000 FT AND TOOK A SUDDEN NOSE DIVE. PLTS GAINED CTL. EMOTIONAL TRAUMA TO PAX; CABIN ATTENDANTS.

Narrative

WE WAITED ON RWY; DELAYING TKOF; FOR APPROX 2 HRS DUE TO UNSATISFACTORY WX CONDITIONS. A STORM WAS POUNDING THE ARPT WITH A STRONG DRIVING RAIN. THE CAPT STATED IN A PA THAT DUE TO EXTREMELY WET RWY AND TAILWINDS; WE WOULD WAIT FOR BETTER CONDITIONS. WE CHANGED RWYS AND THE STORM APPEARED TO BLOW OVER US. WE TOOK OFF AND TURNED L (W) AND SEEMED TO HEAD DIRECTLY INTO THE STORM. WE NEVER SETTLED INTO THE AIR AND HAD A STABLE FEELING. THE PLANE FELT WEIGHTLESS AND I FLOATED IN MY HARNESS IN THE JUMP SEAT. THIS CONTINUED WITH THE PLANE JOLTING AND FREE-FLOATING; THEN WE PITCHED FORWARD; NOSE DOWN; MOMENTARILY. I WAS TOLD LATER BY THE CREW WE HIT A WINDSHEAR AT 10000 FT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT THE PLANE SEEMED TO TAKE A NOSE-DIVE AT ONE POINT AND FRIGHTENED THE CABIN CREW AND THE PAX; SOME OF WHOM BECAME HYSTERICAL. SHE SAID THAT THE CAPT NEVER ONCE GAVE A PA TO EXPLAIN TO THE PAX OR CREW WHAT WAS GOING ON. HE LATER EXPLAINED THAT HE WAS AFRAID OF WAKING PEOPLE UP. AFTER THEIR ENCOUNTER WITH THE WINDSHEAR; OTHER FLTS DECIDED TO WAIT OUT THE STORM. SUPPLEMENTAL INFO FROM ACN 457959: WE GO TO THE OTHER END OF THE RWY TO TAKE OFF INTO THE WIND -- EVIDENTLY THERE WAS A SHIFT IN WIND DIRECTION. NOW; WE TAKE OFF I BELIEVE TO THE N AND MAKE A R TURN DIRECTLY INTO THE STORM! ACFT DROPS SEVERELY 4 TO 5 TIMES. WE HEADED RIGHT INTO THE STORM. WE ALWAYS MAKE A R TURN AND HEAD OUT TOWARDS THE OCEAN - BUT THE STORM WAS RIGHT THERE. WHY DID THE CAPT TAKE OFF - THAT'S THE QUESTION - ESPECIALLY AFTER WAITING ALL THAT TINE AND HE EVEN SAYING HE WOULDN'T TAKE OFF IN BAD WX OVER THE PA.