|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||navaid : gtk.vor|
|Altitude||msl single value : 31000|
|Controlling Facilities||artcc : zma.artcc|
|Operator||common carrier : air carrier|
|Make Model Name||A300|
|Operating Under FAR Part||Part 121|
|Flight Phase||cruise : level|
|Affiliation||government : faa|
|Function||controller : radar|
|Qualification||controller : radar|
|Experience||controller radar : 19|
|Anomaly||other anomaly other|
|Independent Detector||other controllera|
|Resolutory Action||none taken : anomaly accepted|
Maintenance Human Performance
|ATC Facility||communication equipment : zma.artcc|
Air carrier X and all aircraft for over 3 hours were unable to contact ZMA on radio frequency 135.2 at the reporting fix lamer. Aircraft were either 30-50 mi inside ZMA's sector R63 before contact could be made. Aircraft have been experiencing for many months now the same issue. When aircraft request altitude changes; deviation for WX requests or at initial contact; they are unable and must call ZMA numerous times to gain initial radar contact and directed down the line. Improvements to the radar tower and the close proximity to the radio towers possibly are causing interference as the radio towers are much lower than the radar tower. Corrective action needs to be taken to resolve this issue.
Original NASA ASRS Text
Title: ZMA CTLR VOICED CONCERN REGARDING ON-GOING PROBLEMS WITH FREQ 135.2 CLAIMING ACFT ARE UNABLE TO ESTABLISH CONTACT ENTERING ZMA SECTORS.
Narrative: ACR X AND ALL ACFT FOR OVER 3 HRS WERE UNABLE TO CONTACT ZMA ON RADIO FREQ 135.2 AT THE RPTING FIX LAMER. ACFT WERE EITHER 30-50 MI INSIDE ZMA'S SECTOR R63 BEFORE CONTACT COULD BE MADE. ACFT HAVE BEEN EXPERIENCING FOR MANY MONTHS NOW THE SAME ISSUE. WHEN ACFT REQUEST ALT CHANGES; DEV FOR WX REQUESTS OR AT INITIAL CONTACT; THEY ARE UNABLE AND MUST CALL ZMA NUMEROUS TIMES TO GAIN INITIAL RADAR CONTACT AND DIRECTED DOWN THE LINE. IMPROVEMENTS TO THE RADAR TWR AND THE CLOSE PROX TO THE RADIO TWRS POSSIBLY ARE CAUSING INTERFERENCE AS THE RADIO TWRS ARE MUCH LOWER THAN THE RADAR TWR. CORRECTIVE ACTION NEEDS TO BE TAKEN TO RESOLVE THIS ISSUE.
Data retrieved from NASA's ASRS site as of January 2009 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.