Narrative:

I took the shift and about 10 mins later received a call from the captain of flight XXX asking if I was aware of the problem with the aircraft. I was not; and I patched him in with maintenance. The captain advised us that during the previous ZZZ leg (flight YYY); there was a vibration at about row 9 in the cabin; on the captain's side of the aircraft. The flight attendants had initially reported it; and a deadheading captain sat in the affected row; and the noise was so loud that he couldn't hold a conversation. Flight XXX's captain said that the vibration appeared to be speed sensitive. He also mentioned that prior to departing as flight YYY; they had removed a 6 inch long strip of paint near the affected aircraft; and it was then suspected that some sealant from the wing-to-body fairing had gone along with it. The aircraft had a window belt modification; and maintenance didn't feel it was an issue with the pressure vessel itself; and the captain also indicated that pressurization had been normal. The captain didn't want to take the aircraft back to ZZZ with passenger. Maintenance control instructed our maintenance guy there to closely check the wing-to-body fairing area; and if need be; it could be re-sealed; and re-checked in ZZZ. The area was re-sealed. The captain called me back and said that he wanted to be flight planned lower and slower; in the event the problem recurred. I ran a new release at FL250 (versus FL370) and used mach .65 as the speed. I sent the captain a revised release (about 800 pounds more burn); and he was to change the fl; TAS; and ete with ATC since we were so close to leaving. The flight departed about 1 hour 15 mins late. I later noticed him up at the originally filed FL370; and I sent him an ACARS message asking how things were; and passing along a turbulence PIREP for the area. He replied that the vibration was now minimal; asked me to thank maintenance; and thanked me for the PIREP. I passed that along to maintenance control.

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Original NASA ASRS Text

Title: A B737 RPTED TO THE DISPATCHER OF LOUD NOISE AND VIBRATIONS ON L SIDE; ROW 9. ON GND; MAINT RE-SEALED L WING BODY FAIRING. NEXT FLT OK.

Narrative: I TOOK THE SHIFT AND ABOUT 10 MINS LATER RECEIVED A CALL FROM THE CAPT OF FLT XXX ASKING IF I WAS AWARE OF THE PROB WITH THE ACFT. I WAS NOT; AND I PATCHED HIM IN WITH MAINT. THE CAPT ADVISED US THAT DURING THE PREVIOUS ZZZ LEG (FLT YYY); THERE WAS A VIBRATION AT ABOUT ROW 9 IN THE CABIN; ON THE CAPT'S SIDE OF THE ACFT. THE FLT ATTENDANTS HAD INITIALLY RPTED IT; AND A DEADHEADING CAPT SAT IN THE AFFECTED ROW; AND THE NOISE WAS SO LOUD THAT HE COULDN'T HOLD A CONVERSATION. FLT XXX'S CAPT SAID THAT THE VIBRATION APPEARED TO BE SPD SENSITIVE. HE ALSO MENTIONED THAT PRIOR TO DEPARTING AS FLT YYY; THEY HAD REMOVED A 6 INCH LONG STRIP OF PAINT NEAR THE AFFECTED ACFT; AND IT WAS THEN SUSPECTED THAT SOME SEALANT FROM THE WING-TO-BODY FAIRING HAD GONE ALONG WITH IT. THE ACFT HAD A WINDOW BELT MODIFICATION; AND MAINT DIDN'T FEEL IT WAS AN ISSUE WITH THE PRESSURE VESSEL ITSELF; AND THE CAPT ALSO INDICATED THAT PRESSURIZATION HAD BEEN NORMAL. THE CAPT DIDN'T WANT TO TAKE THE ACFT BACK TO ZZZ WITH PAX. MAINT CTL INSTRUCTED OUR MAINT GUY THERE TO CLOSELY CHK THE WING-TO-BODY FAIRING AREA; AND IF NEED BE; IT COULD BE RE-SEALED; AND RE-CHKED IN ZZZ. THE AREA WAS RE-SEALED. THE CAPT CALLED ME BACK AND SAID THAT HE WANTED TO BE FLT PLANNED LOWER AND SLOWER; IN THE EVENT THE PROB RECURRED. I RAN A NEW RELEASE AT FL250 (VERSUS FL370) AND USED MACH .65 AS THE SPD. I SENT THE CAPT A REVISED RELEASE (ABOUT 800 LBS MORE BURN); AND HE WAS TO CHANGE THE FL; TAS; AND ETE WITH ATC SINCE WE WERE SO CLOSE TO LEAVING. THE FLT DEPARTED ABOUT 1 HR 15 MINS LATE. I LATER NOTICED HIM UP AT THE ORIGINALLY FILED FL370; AND I SENT HIM AN ACARS MESSAGE ASKING HOW THINGS WERE; AND PASSING ALONG A TURB PIREP FOR THE AREA. HE REPLIED THAT THE VIBRATION WAS NOW MINIMAL; ASKED ME TO THANK MAINT; AND THANKED ME FOR THE PIREP. I PASSED THAT ALONG TO MAINT CTL.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.