MIAMI, FL, USA
N391EA
MCDONNELL DOUGLAS DC-10-30
EAL FLIGHT 23 EXPERIENCED A RAPID DECOMPRESSION DURING DESCENT INTO MIAMI. FLIGHT 23 DEPARTED LAX WITH 3 FLIGHT CREW, 8 F/A AND 210 PAX. ON CLIMBOUT THE S/O OBSERVED THAT THE MANUAL OUTFLOW VALVE CONTROL WHEEL DID NOT MOVE TOWARD THE 1/2 CLOSED POSITION AS IT SHOULD HAVE. PRESS SYSTEM WAS BEING OPERATED IN SEMI-AUTO MODE. S/O TRIED STANDBY SYSTEM, THEN WENT TO MANUAL. HE OBSERVED THAT THE MANUAL CONTROL WHEEL WAS HARD TO MOVE. S/O USED MANUAL CONTROL TO CRUISE ALT, THEN TRIED STANDBY SYS WHICH HELD CABIN ALT. UPON DESCENT TO MIA, THE WHEEL MOVED RAPIDLY TO THE OPEN POSITION. S/O WAS UNABLE TO CLOSE OUTFLOW VALVE USING MANUAL SYSTEM-WHEEL WOULD NOT MOVE. CREW DONNED 02 MASKS AND EXECUTED EMGY DESCNT T0 10,000, AT 5500 FPM. ACFT WAS LANDED WITH OUTFLOW VALVE FULL OPEN. ONE F/A SUFFERED RUPTURED EAR DRUM AND ONE 02 GENERATOR CANISTER CAUSED SMOKE IN CABIN.
Source: NTSB Aviation Accident Database
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