What was found
F/A REPORTS LOUD PRESSURE LEAK AT FWD JUMPSEAT, LOUDEST MIDWAY BETWEEN 1L AND 1R. FLT ATTD NOTICED A HUM AT 10,000 FT, WHEN SHE GOT THE 2 DINGS FROM FLT DECK, THAT ITS OK FOR HER TO GET UP. SITTING DOWN SHE COULD NOT HEAR THE HUM. HUM IS COMING FROM TOP OF A-C, BY 2000VU CB PNL. HUM WENT AWAY AS AIRCRAFT SPEEDED UP. SHE SAID, THAT IT WAS THE LOUDEST AT CTR OF A-C AND GOT LESS AS YOU WENT TO DOOR 1L AND 1R. IT DID NOT SOUND LIKE A DOOR LEAK. NUMBER ONE VHF ANTENNA GIVES HOWL FROM CF0315. NOISE NOTICEABLE BTWN 240-270 KNOTS 35,000FT. REPLACED THE NR 1 (TOP) VHF ANTENNA IAW AMM.