A widebody transport air carrier crew had a blown air conditioning duct. They landed at an en route ...

Attributes
ACN	217197
Time
Date	199207
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : abi
State Reference	TX
Altitude	agl bound lower : 28000 agl bound upper : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other descent other landing other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 7000 flight time type : 1000
ASRS Report	217197
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 162 flight time total : 13000
ASRS Report	216935
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa other other : unspecified
Resolutory Action	controller : issued new clearance flight crew : declared emergency none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

On the climb out passing through FL280 a thump was heard followed by an EICAS message 'cabin automatic inoperative.' shortly thereafter, #1 flight attendant reported that a door in the rear was loose. Captain requested from the center a vector and descent for dfw. Several seconds later, #1 flight attendant reported smoke in the rear of the cabin and EICAS message 'body duct leak' appeared. The captain instructed me to go through the checklist and told center that we must descend now and land at abi. A landing was accomplished at abi without further incident. Closing the center duct isolation valve as required by the emergency checklist stopped the heat/smoke in the rear of the cabin. The door was secured, smoke and hot air in the rear of the cabin must have given the illusion of the door moving. Maintenance inspection revealed that the center bleed duct located aft of the rear bulk cargo bin near station 1500 had severed. On debriefing the events of the flight with the captain, we were not certain that we had a clearance from center to leave our altitude. We agreed that we should have declared an emergency and had center clear us down.

Original NASA ASRS Text

Title: A WDB ACR CREW HAD A BLOWN AIR CONDITIONING DUCT. THEY LANDED AT AN ENRTE ARPT.

Narrative: ON THE CLBOUT PASSING THROUGH FL280 A THUMP WAS HEARD FOLLOWED BY AN EICAS MESSAGE 'CABIN AUTO INOP.' SHORTLY THEREAFTER, #1 FLT ATTENDANT RPTED THAT A DOOR IN THE REAR WAS LOOSE. CAPT REQUESTED FROM THE CTR A VECTOR AND DSCNT FOR DFW. SEVERAL SECONDS LATER, #1 FLT ATTENDANT RPTED SMOKE IN THE REAR OF THE CABIN AND EICAS MESSAGE 'BODY DUCT LEAK' APPEARED. THE CAPT INSTRUCTED ME TO GO THROUGH THE CHKLIST AND TOLD CTR THAT WE MUST DSND NOW AND LAND AT ABI. A LNDG WAS ACCOMPLISHED AT ABI WITHOUT FURTHER INCIDENT. CLOSING THE CTR DUCT ISOLATION VALVE AS REQUIRED BY THE EMER CHKLIST STOPPED THE HEAT/SMOKE IN THE REAR OF THE CABIN. THE DOOR WAS SECURED, SMOKE AND HOT AIR IN THE REAR OF THE CABIN MUST HAVE GIVEN THE ILLUSION OF THE DOOR MOVING. MAINT INSPECTION REVEALED THAT THE CTR BLEED DUCT LOCATED AFT OF THE REAR BULK CARGO BIN NEAR STATION 1500 HAD SEVERED. ON DEBRIEFING THE EVENTS OF THE FLT WITH THE CAPT, WE WERE NOT CERTAIN THAT WE HAD A CLRNC FROM CTR TO LEAVE OUR ALT. WE AGREED THAT WE SHOULD HAVE DECLARED AN EMER AND HAD CTR CLR US DOWN.

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.

A widebody transport air carrier crew had a blown air conditioning duct. They landed at an en route airport.