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EMB145 pilot concerned about stl runway 12R localizer being very erratic with full scale deflections. Reporter stated that the stl approach controller acknowledged they are getting pilot complaints about the localizer.
| Attributes | |
| ACN | 637516 |
| Time | |
| Date | 200411 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : stl.airport |
| State Reference | MO |
| Altitude | msl bound lower : 1000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : t75.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 12r |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 13000 flight time type : 2000 |
| ASRS Report | 637516 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | atc equipment other atc equipment : localizer alarm aircraft equipment other aircraft equipment : ils localizer |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Navigational Facility |
| Primary Problem | Navigational Facility |
| Situations | |
| Airport | construction : stl.airport |
| Navigational Aid | STL.ILS |
| Chart | approach : stl.ils |
Narrative:
The localizer for runway 12R in stl has been a problem for a while now. It will go to full scale deflection and behave very erratic. This happens below 1000 ft even. On a visual approach, it might just be a nuisance, but in IMC it is unacceptable. Upon asking the tower, the answer was that they do get complaints about it. Go arounds are getting common because of it. Callback conversation with reporter revealed the following information: additional information provided by the reporter revealed that a third runway is being constructed south of runway 12R. He said a large number of construction vehicles are operating near the runway and may be causing the problem.
Original NASA ASRS Text
Title: EMB145 PLT CONCERNED ABOUT STL RWY 12R LOCALIZER BEING VERY ERRATIC WITH FULL SCALE DEFLECTIONS. RPTR STATED THAT THE STL APCH CTLR ACKNOWLEDGED THEY ARE GETTING PLT COMPLAINTS ABOUT THE LOCALIZER.
Narrative: THE LOCALIZER FOR RWY 12R IN STL HAS BEEN A PROB FOR A WHILE NOW. IT WILL GO TO FULL SCALE DEFLECTION AND BEHAVE VERY ERRATIC. THIS HAPPENS BELOW 1000 FT EVEN. ON A VISUAL APCH, IT MIGHT JUST BE A NUISANCE, BUT IN IMC IT IS UNACCEPTABLE. UPON ASKING THE TWR, THE ANSWER WAS THAT THEY DO GET COMPLAINTS ABOUT IT. GO AROUNDS ARE GETTING COMMON BECAUSE OF IT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ADDITIONAL INFO PROVIDED BY THE RPTR REVEALED THAT A THIRD RWY IS BEING CONSTRUCTED SOUTH OF RWY 12R. HE SAID A LARGE NUMBER OF CONSTRUCTION VEHICLES ARE OPERATING NEAR THE RWY AND MAY BE CAUSING THE PROB.
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.