SDR AALA20050268

Service difficulty report · Acm · Boeing 737823

Difficulty date: April 13, 2005
Submitted: April 19, 2005
Operation: Air carrier
Aircraft: N930AN
Make and model: Boeing 737823
Aircraft serial: 29529
System (JASC): 2150 · Cabin Cooling System
Part: Acm
Condition: Failed
Location: A/C Bay
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: G, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

MIA - AT FLIGHT LEVEL 390 RAPID DECOMPRESSION OCCURRED AND OXYGEN MASKS DEPLOYED. RETURNED TO MIA AND LANDED WITHOUT INCIDENT. FLIGHT DATA RECORDER SHOWED RIGHT HAND PACK WAS OFF (FLOW CONTROL VALVE) CLOSED UNTIL BOTTOM OF DESCENT. FLIGHT DATA RECORDER ALSO SHOWED LEFT HAND PACK IN HIGH MODE. REPLACED LEFT HAND AIR CYCLE MACHINE AND HEAT EXCHANGER. SYSTEM GROUND CHECKED NORMAL OPERATION.