SDR AALA20110113TUL09

Service difficulty report · Duct · Boeing 757223

Difficulty date: January 13, 2011
Submitted: January 18, 2011
Operation: Air carrier
Aircraft: N678AN
Make and model: Boeing 757223
Aircraft serial: 29428
Aircraft time: 38,515 hours, 13,248 cycles
System (JASC): 2120 · Air Distribution System
Part: Duct
Condition: Blown
Location: Ac Bay
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: B, A

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

What was found

LAS - INFLIGHT SFO-DFW. CAPTAIN NOTICED CABIN PRESSURE CLIMBING AT A RATE OF 2000 FPM. NO ANNUNCIATIONS OR EICAS MESSAGES INDICATED UNTIL CABIN ALTITUDE ALERT. CREW INITIATED EMERGENCY DESCENT. EMERGENCY DECLARED FLIGHT DIVERTED LAS LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. RE-SECURED SUPPLY DUCT THAT HAD BLOWN OFF RIGHT AIR CONDITIONER BAY. REPLACED NUMBER 2 CONTROLLER AS A PRECAUTION. SYSTEM GROUND CHECK NORMAL OPERATION.