Narrative:

After rotation; fire warning bell came on and was on continuously during climb out; no EICAS or status messages present and all engine indications normal. After reaching safe altitude; captain directed first officer (PF) to fly airplane and handle ATC communications; while he consulted flight manual and initiated phone patch with dispatch and maintenance. Aural warning circuit breakers were pulled and warning silenced. Per maintenance; all fire detector circuit breakers were opened individually in an attempt to isolate source of fire signal. Unable to silence bell with any fire detector circuit breakers opened. All circuit breakers reset except aural warning speaker circuit breakers. Fire test ok with the exception of no aural warnings. With concurrence of maintenance; dispatch; and chief pilot; flight continued to ord and landed. I felt flight crew handled situation very well using excellent CRM for an ambiguous problem during a critical phase of flight.

Google
 

Original NASA ASRS Text

Title: A B757-200 AURAL FIRE WARNING ALARM SOUNDED CONTINUOUSLY WITH NO FIRE INDICATION; REQUIRING THE CREW TO DISABLE THE AURAL WARNING SPEAKER SYS.

Narrative: AFTER ROTATION; FIRE WARNING BELL CAME ON AND WAS ON CONTINUOUSLY DURING CLBOUT; NO EICAS OR STATUS MESSAGES PRESENT AND ALL ENG INDICATIONS NORMAL. AFTER REACHING SAFE ALT; CAPT DIRECTED FO (PF) TO FLY AIRPLANE AND HANDLE ATC COMS; WHILE HE CONSULTED FLT MANUAL AND INITIATED PHONE PATCH WITH DISPATCH AND MAINT. AURAL WARNING CIRCUIT BREAKERS WERE PULLED AND WARNING SILENCED. PER MAINT; ALL FIRE DETECTOR CIRCUIT BREAKERS WERE OPENED INDIVIDUALLY IN AN ATTEMPT TO ISOLATE SOURCE OF FIRE SIGNAL. UNABLE TO SILENCE BELL WITH ANY FIRE DETECTOR CIRCUIT BREAKERS OPENED. ALL CIRCUIT BREAKERS RESET EXCEPT AURAL WARNING SPEAKER CIRCUIT BREAKERS. FIRE TEST OK WITH THE EXCEPTION OF NO AURAL WARNINGS. WITH CONCURRENCE OF MAINT; DISPATCH; AND CHIEF PLT; FLT CONTINUED TO ORD AND LANDED. I FELT FLT CREW HANDLED SITUATION VERY WELL USING EXCELLENT CRM FOR AN AMBIGUOUS PROB DURING A CRITICAL PHASE OF FLT.

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.