Service difficulty report · Multiplexer · Airbus A320232

Difficulty date
April 19, 2013
Submitted
June 3, 2013
Operation
Air carrier
Aircraft
N473UA
Make and model
Airbus A320232
Aircraft serial
1469
Aircraft time
40,003 hours, 16,357 cycles
Engine
Iae V2527A5
Part
Multiplexer
Part number
12612701
Part serial
C400203
Condition
Shorted
Location
Entertainment
Stage of operation
NR
How discovered
9
Nature of condition
B
Precautionary procedure
O

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

What was found

LIQUID SPILLED ON SEATS 2A-B. SHORTED OUT AUDIO IN ENTIRE AIRCRAFT AND HAD ELECTRIC ODOR. CREW ISOLATED THE SYSTEM AND ODOR DISSIPATED. NO FURTHER ISSUES. ENTERTAINMENT SYS IS CURRENTLY OFF. REPLACED SEB AT 2AB WITH CIRCUIT BREAKER OPEN. CYCLED CIRCUIT BREAKERS, ALL AUDIO STILL INOPERATIVE. PES CIRCUIT BREAKERS OPENED. REPLACED MAIN MULTIPLEXER. AUDIO SYSTEM CHECKED GOOD THROUGHOUT CABIN IAW AMM 23-33-31.

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