An air carrier widebody transport flight crew gets an engine fire warning when the 15TH stage bleed ...

Attributes
ACN	371249
Time
Date	199706
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : msp
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 230 flight time total : 14000 flight time type : 1000
ASRS Report	371249
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

The fire warning for the #1 engine activated approximately 5 KTS before V1 on takeoff from runway 11R at msp. The first officer was flying and the thrust was normal so I said 'keep going.' an emergency was declared and our intentions to dump fuel and return to msp and land were stated. At approximately 800 ft the #1 engine 'reverser unlocked' light illuminated. Considering our situation, we decided to start the fuel dump at approximately 1000 ft at about the same time we retracted the flaps instead of waiting and going to 6000 ft to minimize the impact of dumping fuel. The 'engine fire' checklist was run and the fire warning light extinguished moments after the fire extinguishing agent bottle was fired and the engine was shut down. The so then read through the 'reverser unlocked light illuminated' checklist. I informed the flight attendants, passenger, dispatch, and emergency/rescue personnel of our problem. We were radar vectored around the pattern at 3000 ft and cleared for the ILS runway 11R approach. I had the first officer continue the flying throughout the approach and landing which was uneventful. After clearing the runway, the emergency/rescue personnel stated that no smoke or fire was visible from the #1 engine or the brakes so we taxied to the gate where everyone was deplaned. We were informed by the mechanics after their inspection of the #1 engine, that the 15TH stage bleed air duct had broken. The first officer and so both did remarkable jobs and everything went very smooth. ZMP also did a great job handling our flight.

Original NASA ASRS Text

Title: AN ACR WDB FLC GETS AN ENG FIRE WARNING WHEN THE 15TH STAGE BLEED DUCT BREAKS AND LATER THE 'REVERSER UNLOCKED' LIGHT ILLUMINATED. THE FLC SHUT DOWN THE ENG, DUMPED FUEL AND RETURNED TO THEIR DEP ARPT.

Narrative: THE FIRE WARNING FOR THE #1 ENG ACTIVATED APPROX 5 KTS BEFORE V1 ON TKOF FROM RWY 11R AT MSP. THE FO WAS FLYING AND THE THRUST WAS NORMAL SO I SAID 'KEEP GOING.' AN EMER WAS DECLARED AND OUR INTENTIONS TO DUMP FUEL AND RETURN TO MSP AND LAND WERE STATED. AT APPROX 800 FT THE #1 ENG 'REVERSER UNLOCKED' LIGHT ILLUMINATED. CONSIDERING OUR SIT, WE DECIDED TO START THE FUEL DUMP AT APPROX 1000 FT AT ABOUT THE SAME TIME WE RETRACTED THE FLAPS INSTEAD OF WAITING AND GOING TO 6000 FT TO MINIMIZE THE IMPACT OF DUMPING FUEL. THE 'ENG FIRE' CHKLIST WAS RUN AND THE FIRE WARNING LIGHT EXTINGUISHED MOMENTS AFTER THE FIRE EXTINGUISHING AGENT BOTTLE WAS FIRED AND THE ENG WAS SHUT DOWN. THE SO THEN READ THROUGH THE 'REVERSER UNLOCKED LIGHT ILLUMINATED' CHKLIST. I INFORMED THE FLT ATTENDANTS, PAX, DISPATCH, AND EMER/RESCUE PERSONNEL OF OUR PROB. WE WERE RADAR VECTORED AROUND THE PATTERN AT 3000 FT AND CLRED FOR THE ILS RWY 11R APCH. I HAD THE FO CONTINUE THE FLYING THROUGHOUT THE APCH AND LNDG WHICH WAS UNEVENTFUL. AFTER CLRING THE RWY, THE EMER/RESCUE PERSONNEL STATED THAT NO SMOKE OR FIRE WAS VISIBLE FROM THE #1 ENG OR THE BRAKES SO WE TAXIED TO THE GATE WHERE EVERYONE WAS DEPLANED. WE WERE INFORMED BY THE MECHS AFTER THEIR INSPECTION OF THE #1 ENG, THAT THE 15TH STAGE BLEED AIR DUCT HAD BROKEN. THE FO AND SO BOTH DID REMARKABLE JOBS AND EVERYTHING WENT VERY SMOOTH. ZMP ALSO DID A GREAT JOB HANDLING OUR FLT.

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.

An air carrier widebody transport flight crew gets an engine fire warning when the 15TH stage bleed duct breaks and later the 'reverser unlocked' light illuminated. The flight crew shut down the engine, dumped fuel and returned to their departure airport.