A B757-200 experienced an engine overheat EICAS message. With throttle retardation; engine fire loop...

Attributes
ACN	654815
Time
Date	200504
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc tower : mtn.tower
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	654815
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	654821
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas/fire warning
Resolutory Action	flight crew : landed in emergency condition flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During climb out through 12000 ft after departing ZZZ; the 'left engine overheat' EICAS message came on. I retarded the left engine throttle sufficiently to extinguish the message and overheat light. We continued the climb at reduced power and continued on course while accomplishing the engine overheat QRH procedure. We noticed that when the left throttle was retarded; a status message; 'left engine fire loop #1' came on. When I advanced the left throttle toward climb power; when the overheat indications reappeared; the status message cleared from view. Pulling the throttle back extinguished the overheat indications and brought the status message back on. We ran the QRH for 'fire/overheat system;' but it didn't accomplish anything since the 'system fail' light was not illuminated. Passing through FL220; I declared an emergency with ZZZ ARTCC and coordination a return to ZZZ. I left both engines running during the return to ZZZ. The return was expeditious and uneventful. The crash fire rescue equipment crews met the airplane after landing for an external inspection; and reported no fire or obvious problems. After landing; we shut down the left engine. The landing was overweight at 207500 pounds.

Original NASA ASRS Text

Title: A B757-200 EXPERIENCED AN ENG OVERHEAT EICAS MESSAGE. WITH THROTTLE RETARDATION; ENG FIRE LOOP ILLUMINATED. EMER DECLARED AND FLT RETURNED TO DEP STATION.

Narrative: DURING CLBOUT THROUGH 12000 FT AFTER DEPARTING ZZZ; THE 'L ENG OVERHEAT' EICAS MESSAGE CAME ON. I RETARDED THE L ENG THROTTLE SUFFICIENTLY TO EXTINGUISH THE MESSAGE AND OVERHEAT LIGHT. WE CONTINUED THE CLB AT REDUCED PWR AND CONTINUED ON COURSE WHILE ACCOMPLISHING THE ENG OVERHEAT QRH PROC. WE NOTICED THAT WHEN THE L THROTTLE WAS RETARDED; A STATUS MESSAGE; 'L ENG FIRE LOOP #1' CAME ON. WHEN I ADVANCED THE L THROTTLE TOWARD CLB PWR; WHEN THE OVERHEAT INDICATIONS REAPPEARED; THE STATUS MESSAGE CLRED FROM VIEW. PULLING THE THROTTLE BACK EXTINGUISHED THE OVERHEAT INDICATIONS AND BROUGHT THE STATUS MESSAGE BACK ON. WE RAN THE QRH FOR 'FIRE/OVERHEAT SYS;' BUT IT DIDN'T ACCOMPLISH ANYTHING SINCE THE 'SYS FAIL' LIGHT WAS NOT ILLUMINATED. PASSING THROUGH FL220; I DECLARED AN EMER WITH ZZZ ARTCC AND COORD A RETURN TO ZZZ. I LEFT BOTH ENGS RUNNING DURING THE RETURN TO ZZZ. THE RETURN WAS EXPEDITIOUS AND UNEVENTFUL. THE CFR CREWS MET THE AIRPLANE AFTER LNDG FOR AN EXTERNAL INSPECTION; AND RPTED NO FIRE OR OBVIOUS PROBS. AFTER LNDG; WE SHUT DOWN THE L ENG. THE LNDG WAS OVERWT AT 207500 LBS.

Data retrieved from NASA's ASRS site as of January 2009 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 B757-200 experienced an engine overheat EICAS message. With throttle retardation; engine fire loop illuminated. Emergency declared and flight returned to departure station.