Reporter states east side of sector gets ground speed jumps in excess of 100 KTS. Problem idented at...

Attributes
ACN	365356
Time
Date	199704
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : tph
State Reference	NV
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 4 controller non radar : 20 controller radar : 20
ASRS Report	365356
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	faa : investigated
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
ATC Facility	other physical facility

Narrative:

ZLC sector 45 is a very busy sector which goes 'red' on a daily basis handling the majority of traffic inbound to sfo and the bay area from the east coast. The problem is that the eastern side of the sector gets ground speed jumps in excess of 100 KTS. This makes for some 'very interesting' sits when vectoring for separation and or providing in- trail spacing for sfo arrs. Because the speeds are so unreliable at times you must abandon vectors and go to altitude separation. I filed a ucr on this situation in dec of 1996, the problem was idented at the facility level in nov of 1996. To this date this problem has not been fixed which I find to be totally unacceptable! Is the FAA interested in safety? It is or would be reasonable to think that they would apply more resources to fix this problem. As stated this has been idented for 6 months!

Original NASA ASRS Text

Title: RPTR STATES E SIDE OF SECTOR GETS GND SPD JUMPS IN EXCESS OF 100 KTS. PROB IDENTED AT THE LEVEL IN NOV OF 1996 BUT NOT FIXED. UCR FILED IN DEC 1996.

Narrative: ZLC SECTOR 45 IS A VERY BUSY SECTOR WHICH GOES 'RED' ON A DAILY BASIS HANDLING THE MAJORITY OF TFC INBOUND TO SFO AND THE BAY AREA FROM THE EAST COAST. THE PROB IS THAT THE EASTERN SIDE OF THE SECTOR GETS GND SPD JUMPS IN EXCESS OF 100 KTS. THIS MAKES FOR SOME 'VERY INTERESTING' SITS WHEN VECTORING FOR SEPARATION AND OR PROVIDING IN- TRAIL SPACING FOR SFO ARRS. BECAUSE THE SPDS ARE SO UNRELIABLE AT TIMES YOU MUST ABANDON VECTORS AND GO TO ALT SEPARATION. I FILED A UCR ON THIS SIT IN DEC OF 1996, THE PROB WAS IDENTED AT THE FACILITY LEVEL IN NOV OF 1996. TO THIS DATE THIS PROB HAS NOT BEEN FIXED WHICH I FIND TO BE TOTALLY UNACCEPTABLE! IS THE FAA INTERESTED IN SAFETY? IT IS OR WOULD BE REASONABLE TO THINK THAT THEY WOULD APPLY MORE RESOURCES TO FIX THIS PROB. AS STATED THIS HAS BEEN IDENTED FOR 6 MONTHS!

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.

Reporter states east side of sector gets ground speed jumps in excess of 100 KTS. Problem idented at the level in nov of 1996 but not fixed. Ucr filed in dec 1996.