A DC9-30 returned to the field due to a nose landing gear unsafe warning light caused by the failure to xfer the nose gear position sensor target from the removed gear to the replacement gear.

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Attributes
ACN	412707
Time
Date	199808
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Dusk
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	412707
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On gear retraction, nose gear unsafe light came on. During 'C' check, nose gear was changed on aircraft. The target sensor for gear warning did not get xferred from old gear to new gear. On gear change paperwork, there is not a procedure to check gear warning lights.

Original NASA ASRS Text

Title: A DC9-30 RETURNED TO THE FIELD DUE TO A NOSE LNDG GEAR UNSAFE WARNING LIGHT CAUSED BY THE FAILURE TO XFER THE NOSE GEAR POS SENSOR TARGET FROM THE REMOVED GEAR TO THE REPLACEMENT GEAR.

Narrative: ON GEAR RETRACTION, NOSE GEAR UNSAFE LIGHT CAME ON. DURING 'C' CHK, NOSE GEAR WAS CHANGED ON ACFT. THE TARGET SENSOR FOR GEAR WARNING DID NOT GET XFERRED FROM OLD GEAR TO NEW GEAR. ON GEAR CHANGE PAPERWORK, THERE IS NOT A PROC TO CHK GEAR WARNING LIGHTS.

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.