Narrative:

I've reported this to the approach controllers at least 6 times (or more) in the last yr, and again yesterday and today. On tus approach frequency 128.5, the controller's xmissions often times get clipped (or are broken). It sounds like a faulty microphone switch or an intermittent transmitter. This is a very serious problem and is quite well known by the local pilots -- many of us advise of it when it happens. No action seems to be forthcoming from tucson and the problem still exists. The controllers are quite professional and courteous, but it is a dangerous situation with portions of xmissions getting omitted on a frequent basis.

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Original NASA ASRS Text

Title: AN SMA PLT RPTS THAT HE AND MANY OTHER PLTS HAVE HAD PROBS WITH TUS APCH CTL FREQ 128.5 CUTTING OUT BADLY.

Narrative: I'VE RPTED THIS TO THE APCH CTLRS AT LEAST 6 TIMES (OR MORE) IN THE LAST YR, AND AGAIN YESTERDAY AND TODAY. ON TUS APCH FREQ 128.5, THE CTLR'S XMISSIONS OFTEN TIMES GET CLIPPED (OR ARE BROKEN). IT SOUNDS LIKE A FAULTY MIKE SWITCH OR AN INTERMITTENT XMITTER. THIS IS A VERY SERIOUS PROB AND IS QUITE WELL KNOWN BY THE LCL PLTS -- MANY OF US ADVISE OF IT WHEN IT HAPPENS. NO ACTION SEEMS TO BE FORTHCOMING FROM TUCSON AND THE PROB STILL EXISTS. THE CTLRS ARE QUITE PROFESSIONAL AND COURTEOUS, BUT IT IS A DANGEROUS SIT WITH PORTIONS OF XMISSIONS GETTING OMITTED ON A FREQUENT BASIS.

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.