B757-200 crew had a nose gear that did not indicate down and locked.

Attributes
ACN	551497
Time
Date	200206
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl bound lower : 0 msl bound upper : 2000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sju.tracon
Operator	common carrier : air carrier
Make Model Name	B757 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 : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
ASRS Report	551497
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	551498
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance controller : provided flight assist flight crew : declared emergency flight crew : landed in emergency condition flight crew : executed missed approach other
Consequence	other other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Nose gear failed to extend. On approach to ZZZ, we received an unsafe indication on the nose gear ('gear disagreement' on EICAS and amber 'gear' light and 'landing gear monitor' status message). We executed a go around and accomplished the appropriate checklists, none of which resulted in a safe gear indication. We declared an emergency. We contacted operations who gave us a phone patch to dispatch and maintenance controller. While consulting maintenance controller, we executed a low approach to allow maintenance to visually check the gear. They confirmed that the gear was down and locked, and with concurrence of maintenance control we determined the indication to be at fault. Dispatch arranged to have crash fire rescue equipment equipment and maintenance personnel meet us upon landing. We landed at ZZZ using appropriate emergency procedures and hade the nose gear pinned on the runway. We then taxied to the gate. Maintenance informed us that one of the nose landing gear lights was broken and that parts of the light damaged the sensors for the position indicators. We were unaware at any time in-flight that the aircraft had sustained any sort of damage. Supplemental information from acn 551498: after landing, the nose gear pin was hammered in place while still on the runway. We were informed that a portion of the landing light assembly attached to the nose gear strut came apart and destroyed part of the nose gear indicating system.

Original NASA ASRS Text

Title: B757-200 CREW HAD A NOSE GEAR THAT DID NOT INDICATE DOWN AND LOCKED.

Narrative: NOSE GEAR FAILED TO EXTEND. ON APCH TO ZZZ, WE RECEIVED AN UNSAFE INDICATION ON THE NOSE GEAR ('GEAR DISAGREEMENT' ON EICAS AND AMBER 'GEAR' LIGHT AND 'LNDG GEAR MONITOR' STATUS MESSAGE). WE EXECUTED A GAR AND ACCOMPLISHED THE APPROPRIATE CHKLISTS, NONE OF WHICH RESULTED IN A SAFE GEAR INDICATION. WE DECLARED AN EMER. WE CONTACTED OPS WHO GAVE US A PHONE PATCH TO DISPATCH AND MAINT CTLR. WHILE CONSULTING MAINT CTLR, WE EXECUTED A LOW APCH TO ALLOW MAINT TO VISUALLY CHK THE GEAR. THEY CONFIRMED THAT THE GEAR WAS DOWN AND LOCKED, AND WITH CONCURRENCE OF MAINT CTL WE DETERMINED THE INDICATION TO BE AT FAULT. DISPATCH ARRANGED TO HAVE CFR EQUIP AND MAINT PERSONNEL MEET US UPON LNDG. WE LANDED AT ZZZ USING APPROPRIATE EMER PROCS AND HADE THE NOSE GEAR PINNED ON THE RWY. WE THEN TAXIED TO THE GATE. MAINT INFORMED US THAT ONE OF THE NOSE LNDG GEAR LIGHTS WAS BROKEN AND THAT PARTS OF THE LIGHT DAMAGED THE SENSORS FOR THE POS INDICATORS. WE WERE UNAWARE AT ANY TIME INFLT THAT THE ACFT HAD SUSTAINED ANY SORT OF DAMAGE. SUPPLEMENTAL INFO FROM ACN 551498: AFTER LNDG, THE NOSE GEAR PIN WAS HAMMERED IN PLACE WHILE STILL ON THE RWY. WE WERE INFORMED THAT A PORTION OF THE LNDG LIGHT ASSEMBLY ATTACHED TO THE NOSE GEAR STRUT CAME APART AND DESTROYED PART OF THE NOSE GEAR INDICATING SYS.

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.