After receiving a faulty gear extension indication and losing the 'extension' light mechanism, a flight crew performed 2 low passes for a visual check of gear extension. Aircraft equipment problem indicating and warning landing gear.

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Attributes
ACN	315182
Time
Date	199509
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ewr
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	315182
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

On approach to ewr runway 22L the landing gear was extended and no left main gear light was observed. The overhead panel light test switch was activated and still no green gear safe light on the left main gear. The light was pushed to check for proper 'seating' or contact (electrical) of the left main gear light. When the light was touched the assembly 434- 092-008 dislodged from the instrument panel. Without the proper indication for gear extension I requested a low pass on the ewr runway 22R for a visual check of gear extension. All observers on the ground responded with positive statements that the gear appeared 'down and locked.' another go around was executed with gear down. A normal approach and landing were executed to runway 22R. We reviewed abnormal and emergency procedures with the flight attendants, emphasizing a short response time due to the quickly decreasing fuel on board. 6300 pounds remained after landing and shutdown.

Original NASA ASRS Text

Title: AFTER RECEIVING A FAULTY GEAR EXTENSION INDICATION AND LOSING THE 'EXTENSION' LIGHT MECHANISM, A FLC PERFORMED 2 LOW PASSES FOR A VISUAL CHK OF GEAR EXTENSION. ACFT EQUIP PROB INDICATING AND WARNING LNDG GEAR.

Narrative: ON APCH TO EWR RWY 22L THE LNDG GEAR WAS EXTENDED AND NO L MAIN GEAR LIGHT WAS OBSERVED. THE OVERHEAD PANEL LIGHT TEST SWITCH WAS ACTIVATED AND STILL NO GREEN GEAR SAFE LIGHT ON THE L MAIN GEAR. THE LIGHT WAS PUSHED TO CHK FOR PROPER 'SEATING' OR CONTACT (ELECTRICAL) OF THE L MAIN GEAR LIGHT. WHEN THE LIGHT WAS TOUCHED THE ASSEMBLY 434- 092-008 DISLODGED FROM THE INST PANEL. WITHOUT THE PROPER INDICATION FOR GEAR EXTENSION I REQUESTED A LOW PASS ON THE EWR RWY 22R FOR A VISUAL CHK OF GEAR EXTENSION. ALL OBSERVERS ON THE GND RESPONDED WITH POSITIVE STATEMENTS THAT THE GEAR APPEARED 'DOWN AND LOCKED.' ANOTHER GAR WAS EXECUTED WITH GEAR DOWN. A NORMAL APCH AND LNDG WERE EXECUTED TO RWY 22R. WE REVIEWED ABNORMAL AND EMER PROCS WITH THE FLT ATTENDANTS, EMPHASIZING A SHORT RESPONSE TIME DUE TO THE QUICKLY DECREASING FUEL ON BOARD. 6300 LBS REMAINED AFTER LNDG AND SHUTDOWN.

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.