Narrative:

If certain information is correct, that our aircraft radar control panel '0' tilt index is not the true level tilt index, then to improve our radar usage we should document the zero tilt calibration reference on all our aircraft. We can keep a placard in the front of the log which reads 'radar zero tilt is X degrees.' initial calibration could be documented by a trained technician. Maintenance manuals can be modified to require reinserting a blank calibration placard when any adjustment to radar hardware occurs. Crews might be able to send a request to flight standards for aircraft recalibration whenever certain radar reports are entered.

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Original NASA ASRS Text

Title: A FO SUGGEST ALL WX RADAR ANTENNA UNITS BE CALIBRATED SO WHEN THE TILT INDEX ON THE CTL PANEL IS '0' THE TRUE LEVEL OF THE ACFT IS '0.'

Narrative: IF CERTAIN INFO IS CORRECT, THAT OUR ACFT RADAR CTL PANEL '0' TILT INDEX IS NOT THE TRUE LEVEL TILT INDEX, THEN TO IMPROVE OUR RADAR USAGE WE SHOULD DOCUMENT THE ZERO TILT CALIBRATION REF ON ALL OUR ACFT. WE CAN KEEP A PLACARD IN THE FRONT OF THE LOG WHICH READS 'RADAR ZERO TILT IS X DEGS.' INITIAL CALIBRATION COULD BE DOCUMENTED BY A TRAINED TECHNICIAN. MAINT MANUALS CAN BE MODIFIED TO REQUIRE REINSERTING A BLANK CALIBRATION PLACARD WHEN ANY ADJUSTMENT TO RADAR HARDWARE OCCURS. CREWS MIGHT BE ABLE TO SEND A REQUEST TO FLT STANDARDS FOR ACFT RECALIBRATION WHENEVER CERTAIN RADAR RPTS ARE ENTERED.

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.