Aircraft equipment problem false cargo fire warning.

Attributes
ACN	309051
Time
Date	199506
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cvg
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 13000 flight time type : 200
ASRS Report	309051
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We were taxiing out for departure. Just after starting the #1 engine, we received a cargo smoke warning which we believed to be false, intermittent. Heavy thunderstorms were approaching the field. I did not fire the cargo extinguisher and evacuate the aircraft, but elected to turn around and pull back into the gate. A visual inspection showed no problem in the cargo bay. Maintenance was called. The #2 cargo smoke detector was found to be the problem. The system was deferred.

Original NASA ASRS Text

Title: ACFT EQUIP PROB FALSE CARGO FIRE WARNING.

Narrative: WE WERE TAXIING OUT FOR DEP. JUST AFTER STARTING THE #1 ENG, WE RECEIVED A CARGO SMOKE WARNING WHICH WE BELIEVED TO BE FALSE, INTERMITTENT. HVY TSTMS WERE APCHING THE FIELD. I DID NOT FIRE THE CARGO EXTINGUISHER AND EVACUATE THE ACFT, BUT ELECTED TO TURN AROUND AND PULL BACK INTO THE GATE. A VISUAL INSPECTION SHOWED NO PROB IN THE CARGO BAY. MAINT WAS CALLED. THE #2 CARGO SMOKE DETECTOR WAS FOUND TO BE THE PROB. THE SYS WAS DEFERRED.

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.