As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MODERATE VIBRATION REPORTED BY F/A ON T/O LOUD NOISE AT 2L/2R DOORS F/O CONFIRMED AT APPROX 10K FEET. STAB WAS 4.5 FOR T/O BUT REQUIRED SUBSTANTIAL FORCE FOR ROTATION. VIB DOES DECREASE AS DID NOISE WITH A/S INCREASE. INSPECTED ALL A/C COMPONENTS IN MID FUS AND RAM AIR DOOR HINGES, RAN ENGS TO T/O PWR AND PRESSURISED A/C. NO NOISE NOTED. A/C REQUIRES TEST FLT. NOTE: TEST FLT NTF.