An MD80 upon gear extension nose gear down and lock did not illuminate. Emergency declared. Followed QRH. Over center link visual check normal. Tower flyby advised gear down and locked. Landed uneventfully.

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Attributes
ACN	695570
Time
Date	200605
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
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
Navigation In Use	other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	695570
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : nose gear unsafe warning other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : overcame equipment problem flight crew : declared emergency
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Upon gear extension in ZZZ the nose gear down and lock did not illuminate. Followed QRH; talked with dispatch and maintenance control; and did a tower fly-by. The mechanical over center link indicator was up (normal) and we had visual confirmation with the tower that the gear was down and locked. Kept flight attendant and passenger informed. Declared an emergency and the landing in ZZZ was uneventful.

Original NASA ASRS Text

Title: AN MD80 UPON GEAR EXTENSION NOSE GEAR DOWN AND LOCK DID NOT ILLUMINATE. EMER DECLARED. FOLLOWED QRH. OVER CTR LINK VISUAL CHK NORMAL. TWR FLYBY ADVISED GEAR DOWN AND LOCKED. LANDED UNEVENTFULLY.

Narrative: UPON GEAR EXTENSION IN ZZZ THE NOSE GEAR DOWN AND LOCK DID NOT ILLUMINATE. FOLLOWED QRH; TALKED WITH DISPATCH AND MAINT CTL; AND DID A TWR FLY-BY. THE MECHANICAL OVER CTR LINK INDICATOR WAS UP (NORMAL) AND WE HAD VISUAL CONFIRMATION WITH THE TWR THAT THE GEAR WAS DOWN AND LOCKED. KEPT FLT ATTENDANT AND PAX INFORMED. DECLARED AN EMER AND THE LNDG IN ZZZ WAS UNEVENTFUL.

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.