An MD80 configured for landing; gear down; flaps 40 degrees; got landing gear warning and cabin chimes. Unable to silence. Per maintenance control pulled central aural warning system circuit breakers to silence.

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Attributes
ACN	698634
Time
Date	200605
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 1800
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	698634
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : landing gear warning other flight crewa other flight crewb
Resolutory Action	flight crew : executed go around flight crew : overcame equipment problem
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While on ILS for runway 25L in ZZZ we began to configure. Gear went down and locked. When 40 degrees flaps was selected the central aural warning system 'landing gear' warning and cabin call ding began to go off and could not be silenced with the gear horn silence button. The multiple warnings continued to go off. This occurred at 1800 ft. At 500 ft we executed a go around and received vectors to troubleshoot the problem. On clean-up the warnings went away as soon as I raised the flaps past the 27 degree position. The book had nothing that applied to this situation. Gear was down and 3 green and the nose gear indicator on the console was up and in view. We tried to configure again and the same thing happened. We called ZZZ maintenance who called technician. They recommended pulling the central aural warning system breakers due to a bad input to the system. I was sure we had all gear down and locked so we proceeded back to the airport. Pulled the appropriate central aural warning system circuit breakers on technician's advice and landed the aircraft without incident.

Original NASA ASRS Text

Title: AN MD80 CONFIGURED FOR LNDG; GEAR DOWN; FLAPS 40 DEGS; GOT LNDG GEAR WARNING AND CABIN CHIMES. UNABLE TO SILENCE. PER MAINT CTL PULLED CENTRAL AURAL WARNING SYS CIRCUIT BREAKERS TO SILENCE.

Narrative: WHILE ON ILS FOR RWY 25L IN ZZZ WE BEGAN TO CONFIGURE. GEAR WENT DOWN AND LOCKED. WHEN 40 DEGS FLAPS WAS SELECTED THE CENTRAL AURAL WARNING SYS 'LNDG GEAR' WARNING AND CABIN CALL DING BEGAN TO GO OFF AND COULD NOT BE SILENCED WITH THE GEAR HORN SILENCE BUTTON. THE MULTIPLE WARNINGS CONTINUED TO GO OFF. THIS OCCURRED AT 1800 FT. AT 500 FT WE EXECUTED A GAR AND RECEIVED VECTORS TO TROUBLESHOOT THE PROB. ON CLEAN-UP THE WARNINGS WENT AWAY AS SOON AS I RAISED THE FLAPS PAST THE 27 DEG POS. THE BOOK HAD NOTHING THAT APPLIED TO THIS SITUATION. GEAR WAS DOWN AND 3 GREEN AND THE NOSE GEAR INDICATOR ON THE CONSOLE WAS UP AND IN VIEW. WE TRIED TO CONFIGURE AGAIN AND THE SAME THING HAPPENED. WE CALLED ZZZ MAINT WHO CALLED TECHNICIAN. THEY RECOMMENDED PULLING THE CENTRAL AURAL WARNING SYS BREAKERS DUE TO A BAD INPUT TO THE SYS. I WAS SURE WE HAD ALL GEAR DOWN AND LOCKED SO WE PROCEEDED BACK TO THE ARPT. PULLED THE APPROPRIATE CENTRAL AURAL WARNING SYS CIRCUIT BREAKERS ON TECHNICIAN'S ADVICE AND LANDED THE ACFT WITHOUT INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 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.