<< >> NASA ASRS Report 440634, June 1999

A B727-200 freighter in climb at FL280 declared an emergency and diverted due a main cargo fire warning, lights and bell, caused by a defective sensor.

Attributes
ACN	440634
Time
Date	199906
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : msy.airport
State Reference	LA
Altitude	msl single value : 28000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zhu.artcc
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : j35.airway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 70 flight time total : 3200 flight time type : 125
ASRS Report	440634
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 1200
ASRS Report	440342
Events
Anomaly	aircraft equipment problem : critical other anomaly
Independent Detector	aircraft equipment other aircraft equipment : cargo compt. fire warn
Resolutory Action	flight crew : declared emergency flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Main cargo fire/smoke light position #3, with associated warning lights and fire bell, during climb while en route to mem. We declared an emergency and turned back to the departure airport (msy). We accomplished the fire and smoke checklist and main cargo fire/smoke checklist during high speed descent. Landed runway 19 at msy. We stopped on the runway, shut down the engines and evacuate/evacuationed the aircraft after accomplishing our prebriefed responsibilities from the evacuate/evacuation checklist. We exited the aircraft through the main entry door using the emergency escape slide. We coordinated for fire fighting equipment to be standing by and men and equipment were at the aircraft as we went down the slide. Their subsequent investigation revealed no sign of fire or smoke. In other words -- false alarm!

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Original NASA ASRS Text

Title: A B727-200 FREIGHTER IN CLB AT FL280 DECLARED AN EMER AND DIVERTED DUE A MAIN CARGO FIRE WARNING, LIGHTS AND BELL, CAUSED BY A DEFECTIVE SENSOR.

Narrative: MAIN CARGO FIRE/SMOKE LIGHT POS #3, WITH ASSOCIATED WARNING LIGHTS AND FIRE BELL, DURING CLB WHILE ENRTE TO MEM. WE DECLARED AN EMER AND TURNED BACK TO THE DEP ARPT (MSY). WE ACCOMPLISHED THE FIRE AND SMOKE CHKLIST AND MAIN CARGO FIRE/SMOKE CHKLIST DURING HIGH SPD DSCNT. LANDED RWY 19 AT MSY. WE STOPPED ON THE RWY, SHUT DOWN THE ENGS AND EVACED THE ACFT AFTER ACCOMPLISHING OUR PREBRIEFED RESPONSIBILITIES FROM THE EVAC CHKLIST. WE EXITED THE ACFT THROUGH THE MAIN ENTRY DOOR USING THE EMER ESCAPE SLIDE. WE COORDINATED FOR FIRE FIGHTING EQUIP TO BE STANDING BY AND MEN AND EQUIP WERE AT THE ACFT AS WE WENT DOWN THE SLIDE. THEIR SUBSEQUENT INVESTIGATION REVEALED NO SIGN OF FIRE OR SMOKE. IN OTHER WORDS -- FALSE ALARM!

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.