Air carrier crew had no landing gear indication after lowering the landing gear.

Attributes
ACN	593219
Time
Date	200309
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phx.airport
State Reference	AZ
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : p50.tracon
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 19500 flight time type : 9000
ASRS Report	593219
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : overcame equipment problem flight crew : executed go around other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

When landing gear was lowered during visual approach to phx, no gear down indications were displayed, nor were there gear unsafe indications. A go around was initiated at 2000 ft. A light test was conducted and all gear lights found inoperative. Delay vectors were requested and maintenance contacted. Circuit breaker 'sect 5' found open. Emergency authority/authorized was exercised after discussion with maintenance and circuit breaker was closed. Light system was restored and all system checked normal. Resetting an open circuit breaker is a violation of the flight manual.

Original NASA ASRS Text

Title: ACR CREW HAD NO LNDG GEAR INDICATION AFTER LOWERING THE LNDG GEAR.

Narrative: WHEN LNDG GEAR WAS LOWERED DURING VISUAL APCH TO PHX, NO GEAR DOWN INDICATIONS WERE DISPLAYED, NOR WERE THERE GEAR UNSAFE INDICATIONS. A GAR WAS INITIATED AT 2000 FT. A LIGHT TEST WAS CONDUCTED AND ALL GEAR LIGHTS FOUND INOP. DELAY VECTORS WERE REQUESTED AND MAINT CONTACTED. CIRCUIT BREAKER 'SECT 5' FOUND OPEN. EMER AUTH WAS EXERCISED AFTER DISCUSSION WITH MAINT AND CIRCUIT BREAKER WAS CLOSED. LIGHT SYS WAS RESTORED AND ALL SYS CHKED NORMAL. RESETTING AN OPEN CIRCUIT BREAKER IS A VIOLATION OF THE FLT MANUAL.

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.