What was found
(AIRCRAFT NOT GROUNDED) HIGH SQUEAL PITCH AT EMERGENCY EXIT ROW A/C LEFT PASSING THROUGH 30,000 FEET / REMOVED LH EMERGENCY HATCHES PER AMM 52-21-11-000-001-A, FOUND LH AFT EMERGENCY DOOR SEAL DAMAGED, REMOVED AND REPLACED SEAL PER AMM 52-21-18-960-003-A, PRESSURIZATION TEST GOOD PER AMM 05-53-00-780-001-A, LEAK TEST GOOD. NO WHISTLE NOTED DURING PRESSURE TEST"