B757-200 crew had air conditioning duct failure in fll class east airspace.

Attributes
ACN	517924
Time
Date	200107
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : fll.airport
State Reference	FL
Altitude	msl single value : 5500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	517924
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other other : 3
Resolutory Action	controller : issued new clearance flight crew : landed in emergency condition flight crew : declared emergency flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During climb approximately 5500 ft, the purser entered the cockpit and informed me that some overhead panels in the middle of the coach cabin were coming down. I told him we would attend to it when we were clear of the WX and above 10000 ft. He then returned to inform me that there was a crackling sound from the overhead panels, a loud air noise, and more panels coming down. I told him that we were diverting to miami. On final approach, he returned again to inform me of excessive condensation in the cabin. We turned off packs. I declared an emergency due to overweight landing (2000 pounds). Mechanics found large crack in the main overhead air conditioning duct. Aircraft removed from service.

Original NASA ASRS Text

Title: B757-200 CREW HAD AIR CONDITIONING DUCT FAILURE IN FLL CLASS E AIRSPACE.

Narrative: DURING CLB APPROX 5500 FT, THE PURSER ENTERED THE COCKPIT AND INFORMED ME THAT SOME OVERHEAD PANELS IN THE MIDDLE OF THE COACH CABIN WERE COMING DOWN. I TOLD HIM WE WOULD ATTEND TO IT WHEN WE WERE CLR OF THE WX AND ABOVE 10000 FT. HE THEN RETURNED TO INFORM ME THAT THERE WAS A CRACKLING SOUND FROM THE OVERHEAD PANELS, A LOUD AIR NOISE, AND MORE PANELS COMING DOWN. I TOLD HIM THAT WE WERE DIVERTING TO MIAMI. ON FINAL APCH, HE RETURNED AGAIN TO INFORM ME OF EXCESSIVE CONDENSATION IN THE CABIN. WE TURNED OFF PACKS. I DECLARED AN EMER DUE TO OVERWT LNDG (2000 LBS). MECHS FOUND LARGE CRACK IN THE MAIN OVERHEAD AIR CONDITIONING DUCT. ACFT REMOVED FROM SVC.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.