Narrative:

The climb was normal up to about 400 ft AGL. At this time the left engine fire light and master warning lights illuminated. The captain stated that we had a 'left engine fire warning.' airspeed was verified above V2, 114 KTS. On the left propeller lever and asked for verification. At that time the fire lights extinguished. I asked if the left propeller had indeed feathered and he said it had. He also had looked out for fire emanating from the engine nacelle. There was no evidence of an actual fire. At this time, he instructed me to inform tower control that we needed to return for an emergency landing. Tower immediately cleared us to land on 22R. After the 'T' handle had been pulled and the fire light extinguished, the captain actuated the fire extinguisher bottle. The emergency checklist was complete. We were abeam the approach end on the downwind. He called for gear down and the before landing checklist. On short final the captain opted for a slightly higher airspeed than a normal 2 engine approach. We touched down and he applied reverse on the operating engine as needed. There was subsequent nose right movement of the aircraft. This apparently was forceful enough to dislodge the left main outboard tire from its' rim. We rolled to the first appropriate turn off and cleared the active runway. There the fire trucks were waiting for us and verified that there was no fire. We then taxied back to the gate. The cause of the fire light was later found. A pair of clamps that hold a bleed air hose securely to the wall of the engine nacelle had broken away. The hose shifted position and came to rest on or in near proximity to the fire loop.

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Original NASA ASRS Text

Title: AN ACR LTT HAD A FIRE WARNING AFTER TKOF.

Narrative: THE CLB WAS NORMAL UP TO ABOUT 400 FT AGL. AT THIS TIME THE L ENG FIRE LIGHT AND MASTER WARNING LIGHTS ILLUMINATED. THE CAPT STATED THAT WE HAD A 'L ENG FIRE WARNING.' AIRSPD WAS VERIFIED ABOVE V2, 114 KTS. ON THE L PROP LEVER AND ASKED FOR VERIFICATION. AT THAT TIME THE FIRE LIGHTS EXTINGUISHED. I ASKED IF THE L PROP HAD INDEED FEATHERED AND HE SAID IT HAD. HE ALSO HAD LOOKED OUT FOR FIRE EMANATING FROM THE ENG NACELLE. THERE WAS NO EVIDENCE OF AN ACTUAL FIRE. AT THIS TIME, HE INSTRUCTED ME TO INFORM TWR CTL THAT WE NEEDED TO RETURN FOR AN EMER LNDG. TWR IMMEDIATELY CLRED US TO LAND ON 22R. AFTER THE 'T' HANDLE HAD BEEN PULLED AND THE FIRE LIGHT EXTINGUISHED, THE CAPT ACTUATED THE FIRE EXTINGUISHER BOTTLE. THE EMER CHKLIST WAS COMPLETE. WE WERE ABEAM THE APCH END ON THE DOWNWIND. HE CALLED FOR GEAR DOWN AND THE BEFORE LNDG CHKLIST. ON SHORT FINAL THE CAPT OPTED FOR A SLIGHTLY HIGHER AIRSPD THAN A NORMAL 2 ENG APCH. WE TOUCHED DOWN AND HE APPLIED REVERSE ON THE OPERATING ENG AS NEEDED. THERE WAS SUBSEQUENT NOSE R MOVEMENT OF THE ACFT. THIS APPARENTLY WAS FORCEFUL ENOUGH TO DISLODGE THE L MAIN OUTBOARD TIRE FROM ITS' RIM. WE ROLLED TO THE FIRST APPROPRIATE TURN OFF AND CLRED THE ACTIVE RWY. THERE THE FIRE TRUCKS WERE WAITING FOR US AND VERIFIED THAT THERE WAS NO FIRE. WE THEN TAXIED BACK TO THE GATE. THE CAUSE OF THE FIRE LIGHT WAS LATER FOUND. A PAIR OF CLAMPS THAT HOLD A BLEED AIR HOSE SECURELY TO THE WALL OF THE ENG NACELLE HAD BROKEN AWAY. THE HOSE SHIFTED POS AND CAME TO REST ON OR IN NEAR PROX TO THE FIRE LOOP.

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.