The GS signal at sjc is reported erratic to unusable by air carrier aircraft.

Attributes
ACN	455627
Time
Date	199911
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sjc.airport
State Reference	CA
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sjc.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 30l
Flight Phase	descent : approach
Route In Use	approach : instrument precision arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
ASRS Report	455627
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Airport FAA Navigational Facility
Primary Problem	Navigational Facility
Situations
ATC Facility	procedure or policy : sjc.tower
Navigational Aid	SJC.VOR

Narrative:

Sjc GS has been a problem since apr/99. Airways facilities unable to fix it. Supporting documents provided. Any question please call me.

Original NASA ASRS Text

Title: THE GS SIGNAL AT SJC IS RPTED ERRATIC TO UNUSABLE BY ACR ACFT.

Narrative: SJC GS HAS BEEN A PROB SINCE APR/99. AIRWAYS FACILITIES UNABLE TO FIX IT. SUPPORTING DOCUMENTS PROVIDED. ANY QUESTION PLEASE CALL ME.

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.