What was found
DURING INITIAL DESCENT PHASE STRONG ELECTRICAL FEEDBACK NOISE BOTH SIDES, DEBRIEFED CREW. STATED TOP OF DESCENT TO SHORT FINAL, LOUD NOISE. CREW UNPLUGGED HEADSETS, TURNED OFF SPEAKERS, NOISE STILL PRESENT. SHORT FINAL, NOISE STOPPED. CREW DID NOT MENTION ANYTHING ABOUT ANY ODORS. PERFORMED PRESSURIZATION TEST IAW AMM 05-51-91-790-801. NO LEAKS, NOISES OR DEFECTS NOTED DURING PRESSURIZATION. CLEANED SLIDING WINDOWS AS PRECAUTION.