News courtesy of CANSPACE Listserv.
The GPS Block IIR-M satellite, SVN49, resumed transmissions as PRN24 at about 18:35 UTC on August 9, 2012. The signals are marked unhealthy and the satellite is not included in broadcast almanacs. SVN49 was launched on March 24, 2009, but remains out of service until an L1/L2 satellite multipath issue is resolved.
Although not in the almanacs, a number of stations of the International GNSS Service are tracking SVN49. See: http://gge.unb.ca/test/IGS_stns_tracking_G24_223.pdf
SNV49 previously operated between March 28, 2009, and May 6, 2011, as PRN01 and between February 2 and March 14, 2012, as PRN24.