An air carrier large transport freighter had an unsafe nose gear indication.

Attributes
ACN	230347
Time
Date	199301
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jan
State Reference	MS
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : jan artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
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 pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 14000 flight time type : 700
ASRS Report	230347
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : instrument pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 130 flight time total : 5200 flight time type : 1320
ASRS Report	231306
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other other : unspecified
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On approach into jackson, ms, we had a nose gear unlock indication, made a fly-by from the approach and tower confirmed that the nose gear was not down. Executed missed approach and performed the abnormal procedure of extending the gear via alternate gear extension procedure. Made subsequent fly-by's to visually confirm the nose gear was down. Supplemental information from acn 231306: after using the alternate gear extension procedures, we received cockpit indications of the gear being down and locked. Tower inquired as to whether we wanted the emergency equipment standing by to which we agreed. On this second and final fly-by, our maintenance personnel were on hand to make a definite verification that the airplane's landing gear (all) were indeed down. Maintenance came to the airplane after we turned off the active and installed the gear pins after which we taxied safely to the gate.

Original NASA ASRS Text

Title: AN ACR LGT FREIGHTER HAD AN UNSAFE NOSE GEAR INDICATION.

Narrative: ON APCH INTO JACKSON, MS, WE HAD A NOSE GEAR UNLOCK INDICATION, MADE A FLY-BY FROM THE APCH AND TWR CONFIRMED THAT THE NOSE GEAR WAS NOT DOWN. EXECUTED MISSED APCH AND PERFORMED THE ABNORMAL PROC OF EXTENDING THE GEAR VIA ALTERNATE GEAR EXTENSION PROC. MADE SUBSEQUENT FLY-BY'S TO VISUALLY CONFIRM THE NOSE GEAR WAS DOWN. SUPPLEMENTAL INFO FROM ACN 231306: AFTER USING THE ALTERNATE GEAR EXTENSION PROCS, WE RECEIVED COCKPIT INDICATIONS OF THE GEAR BEING DOWN AND LOCKED. TWR INQUIRED AS TO WHETHER WE WANTED THE EMER EQUIP STANDING BY TO WHICH WE AGREED. ON THIS SECOND AND FINAL FLY-BY, OUR MAINT PERSONNEL WERE ON HAND TO MAKE A DEFINITE VERIFICATION THAT THE AIRPLANE'S LNDG GEAR (ALL) WERE INDEED DOWN. MAINT CAME TO THE AIRPLANE AFTER WE TURNED OFF THE ACTIVE AND INSTALLED THE GEAR PINS AFTER WHICH WE TAXIED SAFELY TO THE GATE.

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.