AVL CTLR VOICED CONCERN REGARDING THE TEMPERATURE ENVIRONMENT IN THE TWR CAB WHICH IS CONTROLLED BY THE ARPT AUTHORITY.

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THE TEMP IN THE TWR CAB AT ASHEVILLE TWR FLUCTUATES BTWN EXTREMES OF HOT AND COLD. CTLRS HAVE NO CTL OVER THE TEMP; EXCEPT BY A THERMOSTAT WITH NO VISUAL INDICATION OF THE AMOUNT OF CHANGE BEING MADE. THE SYS IS COMPUTER-CTLED BY THE ARPT AUTH; AND SUPPOSEDLY SET TO OPERATE WITHIN A +/-5 DEG RANGE. WHEN THE TEMP BECOMES UNCOMFORTABLY HOT; MINOR MOVEMENTS OF THE THERMOSTAT CTL WILL SOMETIMES MAKE A MAJOR DIFFERENCE; CAUSING IT TO BECOME UNCOMFORTABLY COLD. AT OTHER TIMES; LARGER MOVEMENTS OF THE CTL WILL HAVE NO EFFECT. THE SAME APPLIES FOR WHEN THE TEMP IS UNCOMFORTABLY COLD. AT OTHER TIMES; THE TEMP WILL FLUCTUATE BTWN UNCOMFORTABLY HOT AND UNCOMFORTABLY COLD WITH NO USER INTERVENTION WHATSOEVER. I CONSIDER THIS TO BE A SAFETY ISSUE; BECAUSE IT IS EASY TO BECOME DISTR BY THESE TEMP ISSUES; MAKING IT DIFFICULT TO FOCUS ON THE TFC. ATTEMPTS TO MAINTAIN AN EVEN TEMP REQUIRE CONSTANT CHANGES AT THE THERMOSTAT CTL; WHICH IS ACROSS THE TWR FROM THE POS OF OP AND REQUIRE TURNING YOUR BACK ON THE RWY. UCR'S HAVE BEEN FILED; VERBAL AND WRITTEN COMPLAINTS HAVE BEEN MADE; AND THE SIT WAS EVEN INCLUDED IN A RPT TO CONGRESS SEVERAL MONTHS AGO. THE ARPT AUTH HAS MADE SOME ATTEMPTS TO CORRECT THE PROB BUT IT CONTINUES UNRESOLVED.