Sjc controller concerned with ILS equipment reliability.

Attributes
ACN	449485
Time
Date	199909
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sjc.airport
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 3000
Environment
Flight Conditions	IMC
Weather Elements	Fog
Light	Dawn
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Experience	controller limited radar : 2 controller military : 3 controller non radar : 9 controller supervisory : 2
ASRS Report	449485
Events
Anomaly	inflight encounter : weather other anomaly other
Independent Detector	atc equipment other atc equipment : monitor panel other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Problem Areas	ATC Facility
Primary Problem	ATC Facility

Narrative:

Numerous aircraft have been reporting the GS as 'variable.' aircraft today reported GS 'unusable.' this has been going on for at least 2 weeks.

Original NASA ASRS Text

Title: SJC CTLR CONCERNED WITH ILS EQUIP RELIABILITY.

Narrative: NUMEROUS ACFT HAVE BEEN RPTING THE GS AS 'VARIABLE.' ACFT TODAY RPTED GS 'UNUSABLE.' THIS HAS BEEN GOING ON FOR AT LEAST 2 WKS.

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.