|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Altitude||msl single value : 5100|
|Controlling Facilities||artcc : zse.artcc|
|Operator||common carrier : air carrier|
|Make Model Name||Brasilia EMB-120 All Series|
|Operating Under FAR Part||Part 119|
|Navigation In Use||ils localizer & glide slope : 32|
|Flight Phase||descent : approach|
|Route In Use||approach : instrument precision|
|Affiliation||government : faa|
|Function||controller : radar|
controller : approach
|Qualification||controller : radar|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Anomaly||altitude deviation : overshoot|
other anomaly other
|Independent Detector||aircraft equipment other aircraft equipment : altimeter setting|
other flight crewa
other flight crewb
|Resolutory Action||controller : issued new clearance|
|Problem Areas||ATC Human Performance|
|Primary Problem||ATC Human Performance|
|Air Traffic Incident||Intra Facility Coordination Failure|
Wrong altimeter entered into WX database. Actual altimeter was 30.09, database was 30.29. This situation was not caught by data specialist, but by controller and pilot. WX was enough of a factor to dictate ILS approachs, and if this same situation had happened 2 days earlier and not caught, WX was at minimums. Pilot was asked if newest WX was needed, and advised they already had it. Lower altitude and approach clearance were issued with altimeter 30.29 give. There was question in the pilot's voice inflection, which caused controller to more closely inspect and question altimeters. Further investigation showed that someone had a chance to catch and correct problem, but apparently failed to.
Original NASA ASRS Text
Title: FLC OF AN EMBRAER EMB120 QUESTIONED NEW ALTIMETER SETTING DUE TO THE WIDE VARIATION OF OLD TO THE NEW ONE WHEN STARTING AN ILS APCH AND WAS SUBSEQUENTLY GIVEN A CORRECTED ONE AFTER THE ARTCC CTLR REVERIFIED FOR CORRECT SETTING.
Narrative: WRONG ALTIMETER ENTERED INTO WX DATABASE. ACTUAL ALTIMETER WAS 30.09, DATABASE WAS 30.29. THIS SIT WAS NOT CAUGHT BY DATA SPECIALIST, BUT BY CTLR AND PLT. WX WAS ENOUGH OF A FACTOR TO DICTATE ILS APCHS, AND IF THIS SAME SIT HAD HAPPENED 2 DAYS EARLIER AND NOT CAUGHT, WX WAS AT MINIMUMS. PLT WAS ASKED IF NEWEST WX WAS NEEDED, AND ADVISED THEY ALREADY HAD IT. LOWER ALT AND APCH CLRNC WERE ISSUED WITH ALTIMETER 30.29 GIVE. THERE WAS QUESTION IN THE PLT'S VOICE INFLECTION, WHICH CAUSED CTLR TO MORE CLOSELY INSPECT AND QUESTION ALTIMETERS. FURTHER INVESTIGATION SHOWED THAT SOMEONE HAD A CHANCE TO CATCH AND CORRECT PROB, BUT APPARENTLY FAILED TO.
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.