Boeing 737 flight crew reported a rejected takeoff due to fire warning at approximately 147 knots.

Attributes
ACN	1525484
Time
Date	201803
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Fire/Overheat Warning
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 7888 Flight Crew Type 4333
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 250 Flight Crew Total 11000 Flight Crew Type 2500
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Cleared for takeoff; at approximately 147 knots fire warning activated. Performed rejected takeoff procedures. First officer notified tower of the rejected takeoff; asked for crash and fire assistance and made a public address to the passengers to remain seated. Reaching a slow speed; disengaged the auto-brakes and rolled clear of the runway onto an adjacent taxiway. Conducted rejected takeoff checklist. All fire lights were illuminated including wheel well and APU. Called flight attendants who inspected aircraft for smoke and any indication of a fire. Due to the lack of secondary indications of a fire and the fact that all the fire lights were illuminated; we believed the issue was an indication fault; not an actual fire and elected not to evacuate. Coordinated with tower to talk with crash and fire who confirmed visually and with infrared sensors. There was no indication of a fire. Coordinated with tower and operations to return to gate. At the gate; crash and fire did a further inspection of the aircraft and determined there was no fire or indication of a fire. Maintenance inspected the aircraft and determined the module controlling fire indications had malfunctioned.

Original NASA ASRS Text

Title: Boeing 737 flight crew reported a rejected takeoff due to Fire Warning at approximately 147 knots.

Narrative: Cleared for takeoff; at approximately 147 knots fire warning activated. Performed rejected takeoff procedures. First Officer notified Tower of the rejected takeoff; asked for crash and fire assistance and made a public address to the passengers to remain seated. Reaching a slow speed; disengaged the auto-brakes and rolled clear of the runway onto an adjacent taxiway. Conducted Rejected Takeoff checklist. All fire lights were illuminated including wheel well and APU. Called Flight Attendants who inspected aircraft for smoke and any indication of a fire. Due to the lack of secondary indications of a fire and the fact that all the fire lights were illuminated; we believed the issue was an indication fault; not an actual fire and elected not to evacuate. Coordinated with Tower to talk with crash and fire who confirmed visually and with infrared sensors. There was no indication of a fire. Coordinated with Tower and Operations to return to gate. At the gate; crash and fire did a further inspection of the aircraft and determined there was no fire or indication of a fire. Maintenance inspected the aircraft and determined the module controlling fire indications had malfunctioned.

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.