SDR AALA20110906ORD02

Service difficulty report · Acm · Boeing 777223

Difficulty date: September 6, 2011
Submitted: September 9, 2011
Operation: Air carrier
Aircraft: N755AN
Make and model: Boeing 777223
Aircraft serial: 30263
Aircraft time: 41,824 hours, 5,532 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Acm
Condition: Faulty
Location: Ac Bay
Stage of operation: CL
How discovered: O
Nature of condition: B, E
Precautionary procedure: A

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

What was found

ORD - CREW REPORTED STRONG ELECTRICAL SMELL IN CABIN. SMELL DISSIPATED WHEN GALLEYS AND POWER PORTS WERE TURNED OFF. PASSENGER REPORTED FLOOR VIBRATION AT LEFT AISLE ROW 11, VIBRATION PROCEEDED BY A LOUD BANG, VIBRATION ENDED WHEN RIGHT PACK TURNED OFF. EMERGENCY DECLARED FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT PACK AIR CYCLE MACHINE. SYSTEM GROUND CHECK NORMAL OPERATION.