A B737 crew, upon lowering the gear on fanal, had no gear indication lights.

Attributes
ACN	508114
Time
Date	200104
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord.airport
State Reference	IL
Environment
Flight Conditions	VMC
Weather Elements	Turbulence Thunderstorm
Light	Night
Aircraft 1
Controlling Facilities	tracon : c90.tracon tracon : p50.tracon
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 174
ASRS Report	508114
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Experience	flight time last 90 days : 62 flight time total : 4100 flight time type : 364
ASRS Report	508115
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : declared emergency flight crew : landed in emergency condition
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Preflight, taxi, climb, cruise and descent were normal. All indications were normal. Winds at ord were 2318g26, approach assigned us runway 27L and turned us on a 21 mile final at 180 KTS, at 8 DME I called for the gear down, final descent check. We noticed there were no gear indication lights red or green. We went around and worked the problem. We checked for popped cbs, called dispatch and worked with mx with no resolution, so we ran the manual gear extention irregular procedure. The nose and right main gear were verified down and locked. We were unable to verify the left main gear locked in position due to misallignment of the view port mirror. We declared the emergency with dispatch and finalized communication with mx approach put us on a 30 mile final for 27L. We landed without incident.

Original NASA ASRS Text

Title: A B737 CREW, UPON LOWERING THE GEAR ON FANAL, HAD NO GEAR INDICATION LIGHTS.

Narrative: PREFLIGHT, TAXI, CLIMB, CRUISE AND DESCENT WERE NORMAL. ALL INDICATIONS WERE NORMAL. WINDS AT ORD WERE 2318G26, APPROACH ASSIGNED US RWY 27L AND TURNED US ON A 21 MILE FINAL AT 180 KTS, AT 8 DME I CALLED FOR THE GEAR DOWN, FINAL DESCENT CHECK. WE NOTICED THERE WERE NO GEAR INDICATION LIGHTS RED OR GREEN. WE WENT AROUND AND WORKED THE PROBLEM. WE CHECKED FOR POPPED CBS, CALLED DISPATCH AND WORKED WITH MX WITH NO RESOLUTION, SO WE RAN THE MANUAL GEAR EXTENTION IRREGULAR PROC. THE NOSE AND RIGHT MAIN GEAR WERE VERIFIED DOWN AND LOCKED. WE WERE UNABLE TO VERIFY THE LEFT MAIN GEAR LOCKED IN POSITION DUE TO MISALLIGNMENT OF THE VIEW PORT MIRROR. WE DECLARED THE EMERGENCY WITH DISPATCH AND FINALIZED COMMUNICATION WITH MX APPROACH PUT US ON A 30 MILE FINAL FOR 27L. WE LANDED WITHOUT INCIDENT.

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.