<< >> NASA ASRS Report 384277, November 1997

An airbus A320 on final approach declared an emergency due to a landing gear position unsafe warning indication.

Attributes
ACN	384277
Time
Date	199711
Day	Sat
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : ind
State Reference	IN
Altitude	msl bound lower : 1800 msl bound upper : 1800
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	tower : ind artcc : zla
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach landing other other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 14000 flight time type : 500
ASRS Report	384277
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	other flight crewa other other : unspecified cockpit
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Unsafe gear indication resulted in emergency declaration with uneventful landing. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was an airbus A320 and the only maintenance information on the corrective action is not complete. The reporter said the airplane was OTS for 3 days, 2 landing gear control interface unit computers were replaced and some wiring repaired or replaced. The reporter stated that the logbook gave no indication of previous landing gear indication problems.

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Original NASA ASRS Text

Title: AN AIRBUS A320 ON FINAL APCH DECLARED AN EMER DUE TO A LNDG GEAR POS UNSAFE WARNING INDICATION.

Narrative: UNSAFE GEAR INDICATION RESULTED IN EMER DECLARATION WITH UNEVENTFUL LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS AN AIRBUS A320 AND THE ONLY MAINT INFO ON THE CORRECTIVE ACTION IS NOT COMPLETE. THE RPTR SAID THE AIRPLANE WAS OTS FOR 3 DAYS, 2 LNDG GEAR CTL INTERFACE UNIT COMPUTERS WERE REPLACED AND SOME WIRING REPAIRED OR REPLACED. THE RPTR STATED THAT THE LOGBOOK GAVE NO INDICATION OF PREVIOUS LNDG GEAR INDICATION PROBS.

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.