B737-300 flight crew questions den tower when taxiway centerline lights deactivate.

Attributes
ACN	521352
Time
Date	200108
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Experience	flight time type : 1205
ASRS Report	521352
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	inflight encounter : weather other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Airport Chart Or Publication
Primary Problem	Airport

Narrative:

We cleared runway 35R after landing and taxied onto taxiway P6 then taxiway P. As we got onto taxiway P, the taxiway centerline lights (green) went out. Tower told us they had just activated smgcs and we weren't on an smgcs taxiway. They turned them back on for us. On the page, it shows taxiway P between taxiway P6 and taxiway P7 as part of the smgcs taxi area. Either the page needs updating or the airport needs to fix the lights. Callback conversation with reporter revealed the following information: reporter has not received company feedback about the taxiway lighting procedure. Supplemental information: controller specialist advised that if visibility drops below 600 ft, comes back above, then goes back below 600 ft 'in a relatively brief period of time,' the smgcs may not reinitiate during 'quick' WX transitions. The controller was aware of an airport/FAA meeting soon. There was to be discussions as to which txwys to include or delete from the smgcs project.

Original NASA ASRS Text

Title: B737-300 FLC QUESTIONS DEN TWR WHEN TXWY CTRLINE LIGHTS DEACTIVATE.

Narrative: WE CLRED RWY 35R AFTER LNDG AND TAXIED ONTO TXWY P6 THEN TXWY P. AS WE GOT ONTO TXWY P, THE TXWY CTRLINE LIGHTS (GREEN) WENT OUT. TWR TOLD US THEY HAD JUST ACTIVATED SMGCS AND WE WEREN'T ON AN SMGCS TXWY. THEY TURNED THEM BACK ON FOR US. ON THE PAGE, IT SHOWS TXWY P BTWN TXWY P6 AND TXWY P7 AS PART OF THE SMGCS TAXI AREA. EITHER THE PAGE NEEDS UPDATING OR THE ARPT NEEDS TO FIX THE LIGHTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR HAS NOT RECEIVED COMPANY FEEDBACK ABOUT THE TXWY LIGHTING PROC. SUPPLEMENTAL INFO: CTLR SPECIALIST ADVISED THAT IF VISIBILITY DROPS BELOW 600 FT, COMES BACK ABOVE, THEN GOES BACK BELOW 600 FT 'IN A RELATIVELY BRIEF PERIOD OF TIME,' THE SMGCS MAY NOT REINITIATE DURING 'QUICK' WX TRANSITIONS. THE CTLR WAS AWARE OF AN ARPT/FAA MEETING SOON. THERE WAS TO BE DISCUSSIONS AS TO WHICH TXWYS TO INCLUDE OR DELETE FROM THE SMGCS PROJECT.

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.