A tower controller claims that the ASOS equipment gives inaccurate readings.

Attributes
ACN	396140
Time
Date	199803
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Person 1
Affiliation	government : faa
Function	controller : ground
Qualification	controller : radar
Experience	controller military : 7 controller radar : 23
ASRS Report	396140
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
Navigational Aid	Unspecified

Narrative:

ASOS inaccuracies. ASOS unrepresentative of actual conditions. Visibility shows 1 mi when actual is 10 mi. Ceiling shows 100 ft when actual is at least 5000 ft.

Original NASA ASRS Text

Title: A TWR CTLR CLAIMS THAT THE ASOS EQUIP GIVES INACCURATE READINGS.

Narrative: ASOS INACCURACIES. ASOS UNREPRESENTATIVE OF ACTUAL CONDITIONS. VISIBILITY SHOWS 1 MI WHEN ACTUAL IS 10 MI. CEILING SHOWS 100 FT WHEN ACTUAL IS AT LEAST 5000 FT.

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.