Air carrier medium large transport flight crew experiences rupture in bleed air duct.

Attributes
ACN	180788
Time
Date	199106
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sat
State Reference	TX
Altitude	msl bound lower : 1000 msl bound upper : 17000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : zhu
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 130 flight time total : 9575 flight time type : 5000
ASRS Report	180788
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

On climb out from sat, at about 17000' MSL, 13TH stage bleed air duct ruptured on #3 engine, giving us a fire warning in the cockpit. #3 throttle was retarded and the fire warning terminated. #3 engine was left at idle for a backup and we returned to sat for an uneventful landing.

Original NASA ASRS Text

Title: ACR MLG FLT CREW EXPERIENCES RUPTURE IN BLEED AIR DUCT.

Narrative: ON CLBOUT FROM SAT, AT ABOUT 17000' MSL, 13TH STAGE BLEED AIR DUCT RUPTURED ON #3 ENG, GIVING US A FIRE WARNING IN THE COCKPIT. #3 THROTTLE WAS RETARDED AND THE FIRE WARNING TERMINATED. #3 ENG WAS LEFT AT IDLE FOR A BACKUP AND WE RETURNED TO SAT FOR AN UNEVENTFUL LNDG.

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.