Troubled GPS Satellite SVN49 Removed from Active Service

News courtesy of CANSPACE listserv.

Signal-to-noise-ratio plot of SVN49/PRN01 as observed by a receiver on the island of Tahiti. Tracking abruptly stopped at 14:38 GPS Time. (Click to enlarge.)

According to a recently issued NANU (see below), the GPS satellite carrying the problematic L5 test transmitter, SVN49/PRN01, has been decommissioned from active service. Although it was never set healthy for general use, it was being tracked by stations of the International GNSS Service and data was made available to engineers and scientists for test purposes.

According to data from the IGS station TAH1 on the island of Tahiti, the L1/L2 signals were switched off at about 14:38 GPS time.

Is the decommissioning of SVN49/PRN01, apparently without a resolution of how to introduce the satellite into the active constellation, in preparation for the launch of the second Block IIF satellite now scheduled for July 14? Presumably, SVN49 is now a reserve satellite, which could be brought into service later (if necessary) and if an acceptable means of handling its multipath problem can be found.

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2011039 NANU TYPE: GENERAL
*** GENERAL MESSAGE TO ALL GPS USERS ***
GPS satellite SVN49 (PRN01) was decommissioned from active service on
JDay 126 (06 May 2011). PRN01 is available for future satellite service.
*** GENERAL MESSAGE TO ALL GPS USERS ***

POC:
CIVILIAN – NAVCEN AT 703-313-5900, HTTP://WWW.NAVCEN.USCG.GOV
MILITARY – GPS OPERATIONS CENTER at HTTP://GPS.AFSPC.AF.MIL/GPSOC,
DSN 560-2541,
COMM 719-567-2541, gps_support@schriever.af.mil,
HTTPS://gps.afspc.af.mil
MILITARY ALTERNATE – JOINT SPACE OPERATIONS CENTER, DSN 276-3514,
COMM 805-606-3514, JSPOCCOMBATOPS@VANDENBERG.AF.MIL