Widebody transport go around due to an unsafe landing gear indication.

Attributes
ACN	293809
Time
Date	199501
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 200 agl bound upper : 200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : den artcc : zma
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach landing : go around landing : missed approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 250 flight time total : 14000 flight time type : 3000
ASRS Report	293809
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Fully configured, stable approach in clear WX, light winds -- at approximately 200 ft AGL the landing gear warning horn sounded with associated left main gear unsafe light on -- performed missed approach and requested extended downwind leg to perform abnormal checklist. A-300 has 2 gear sensor system. Pilot panel showed left main unsafe, so panel showed all gear down and locked. Abnormal checklist says recycle the gear and if either system indicated down and locked perform normal landing. Performed checklist and landed with no problems. Aircraft had a past history of gear warning system being activated but it was during taxi phase of operation. Maintenance personnel switched sensor system at the gate and dispatched aircraft with appropriate MEL placard. Even though the MEL dispatch was correct I don't feel that it is safe to continue operation with a landing gear sensor problem. Next flight was uneventful. I don't know when the problem was finally corrected.

Original NASA ASRS Text

Title: WDB GAR DUE TO AN UNSAFE LNDG GEAR INDICATION.

Narrative: FULLY CONFIGURED, STABLE APCH IN CLR WX, LIGHT WINDS -- AT APPROX 200 FT AGL THE LNDG GEAR WARNING HORN SOUNDED WITH ASSOCIATED L MAIN GEAR UNSAFE LIGHT ON -- PERFORMED MISSED APCH AND REQUESTED EXTENDED DOWNWIND LEG TO PERFORM ABNORMAL CHKLIST. A-300 HAS 2 GEAR SENSOR SYS. PLT PANEL SHOWED L MAIN UNSAFE, SO PANEL SHOWED ALL GEAR DOWN AND LOCKED. ABNORMAL CHKLIST SAYS RECYCLE THE GEAR AND IF EITHER SYS INDICATED DOWN AND LOCKED PERFORM NORMAL LNDG. PERFORMED CHKLIST AND LANDED WITH NO PROBS. ACFT HAD A PAST HISTORY OF GEAR WARNING SYS BEING ACTIVATED BUT IT WAS DURING TAXI PHASE OF OP. MAINT PERSONNEL SWITCHED SENSOR SYS AT THE GATE AND DISPATCHED ACFT WITH APPROPRIATE MEL PLACARD. EVEN THOUGH THE MEL DISPATCH WAS CORRECT I DON'T FEEL THAT IT IS SAFE TO CONTINUE OP WITH A LNDG GEAR SENSOR PROB. NEXT FLT WAS UNEVENTFUL. I DON'T KNOW WHEN THE PROB WAS FINALLY CORRECTED.

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.