What was found
PRESSURIZATION FAIL WHILE IN FLIGHT AT FL 240 IN BOTH THE AUTO AND MANUAL MODE DECLARED EMERGENCY. MEL 21-30 AUTH# 020319D-C ORIG AML PG 4847349. PACK 2 LOUD NOISE, BLOWN DUCT SLEEVE.-C/A-RAR #2 ACM DUCT SLEEVE, INSP CHECK GOOD IAW AMM 21-51-14, NO LEAKS, RH COOLING SYSTEM TEST GOOD IAW AMM 21-51-00 MEL 21-30 RESTORED.SEE ITEM #1 AND ITEM # 3 THIS AML PAGE. PRESSURIZATION CHECK GOOD IAW AMM 21-31-00.