An SF34 flight crew had a right engine fire indication just after takeoff.

Attributes
ACN	433900
Time
Date	199904
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 3500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 16000 flight time type : 4000
ASRS Report	433900
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument pilot : cfi
Experience	flight time last 90 days : 80 flight time total : 1800 flight time type : 80
ASRS Report	433913
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to alternate flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After takeoff, right engine fire light and fire bell came on. Declared emergency. Returned to lax while running emergency checklists. Evacuate/evacuationed on taxiway. Callback conversation with reporter revealed the following information: the captain had briefed about engine problems during preflight and the first officer performed just as he had instructed. The captain flew the aircraft and talked on the radios while the first officer read and, with the captain's confirmation, completed the actions on the checklist. The captain was suspicious about the warning because the fire light in the fire handle for the right engine did not illuminate. Only the master warning illuminated. But the captain was required by the other warnings to treat the situation as an actual fire until the engine could be inspected. When the fire warning persisted after landing the crew had the aircraft evacuate/evacuationed. There were no injuries. Maintenance personnel inspected the aircraft in the hangar and found no evidence of a fire, but the sensor that rang the fire bell was faulty.

Original NASA ASRS Text

Title: AN SF34 FLC HAD A R ENG FIRE INDICATION JUST AFTER TKOF.

Narrative: AFTER TKOF, R ENG FIRE LIGHT AND FIRE BELL CAME ON. DECLARED EMER. RETURNED TO LAX WHILE RUNNING EMER CHKLISTS. EVACED ON TXWY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT HAD BRIEFED ABOUT ENG PROBS DURING PREFLT AND THE FO PERFORMED JUST AS HE HAD INSTRUCTED. THE CAPT FLEW THE ACFT AND TALKED ON THE RADIOS WHILE THE FO READ AND, WITH THE CAPT'S CONFIRMATION, COMPLETED THE ACTIONS ON THE CHKLIST. THE CAPT WAS SUSPICIOUS ABOUT THE WARNING BECAUSE THE FIRE LIGHT IN THE FIRE HANDLE FOR THE R ENG DID NOT ILLUMINATE. ONLY THE MASTER WARNING ILLUMINATED. BUT THE CAPT WAS REQUIRED BY THE OTHER WARNINGS TO TREAT THE SIT AS AN ACTUAL FIRE UNTIL THE ENG COULD BE INSPECTED. WHEN THE FIRE WARNING PERSISTED AFTER LNDG THE CREW HAD THE ACFT EVACED. THERE WERE NO INJURIES. MAINT PERSONNEL INSPECTED THE ACFT IN THE HANGAR AND FOUND NO EVIDENCE OF A FIRE, BUT THE SENSOR THAT RANG THE FIRE BELL WAS FAULTY.

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.