B757 first officer reported that a fire warning resulted in a rejected takeoff.

Attributes
ACN	1723569
Time
Date	202001
Local Time Of Day	0601-1200
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Powerplant Fire/Overheat Warning
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

After advancing power for takeoff power was set and '80 kt.s' was called. At about 90 kts. We got a left engine fire warning and aborted the takeoff. As soon as the power was reduced to idle the fire warnings went out. We exited the runway and coordinated with tower; ground; maintenance; and operations. All seemed normal and brakes were cooled so we taxied back to the gate to meet with maintenance.

Original NASA ASRS Text

Title: B757 First Officer reported that a fire warning resulted in a rejected takeoff.

Narrative: After advancing power for takeoff power was set and '80 kt.s' was called. At about 90 kts. we got a Left engine fire warning and aborted the takeoff. As soon as the power was reduced to idle the fire warnings went out. We exited the runway and coordinated with Tower; Ground; Maintenance; and Operations. All seemed normal and brakes were cooled so we taxied back to the gate to meet with Maintenance.

Data retrieved from NASA's ASRS site 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.