UNPLANNED SAFING/ANOMALY Status Page

Long Range Planning Group, (lrpg@stsci.edu)
Last updated: 21 October 2014.

A NOTE ABOUT SAFEMODE MESSAGES Archived messages regarding safings and other significant events: HST Blog



Event #140: October 20, 2014 (2014.084) CU/SDF Lockup


Event #139: March 26, 2014 (2014.084) COS Suspend


Event #138: March 7, 2014 (2014.066) KFSP Safe Mode: Apparent Loss of Gyro 5


Event #137: February 15, 2013 (2013.046) SWSP Safe Mode: SA Command Profile Test Failure


Event #136: December 22, 2012 (2012.358) Safe Mode -- Solar Array Commanding Anomaly:


Event #135: June 27, 2012 (2012.179) ACS Suspend:


Event #134: June 2, 2012 (2012.154) SI C&DH Hang:


Event #133: April 30, 2012 (2012.121) COS Suspend:


Event #132: December 24, 2011 (2011.358) MA2 Coherement Mode Anomaly:


Event #131: December 1, 2011 (2011.335) SSR 3 Anomaly:


Event #130: September 27, 2011 (2011.270) SIC&DH Lockup:


Event #129: September 13, 2011 (2011.256) SSR 1 Latch Up:


Event #128: September, 7, 2011 (2011.250) Gyro 4 Motor Restriction Event:


Event #127: March 16-31, 2011 (2011.077) Gyro Swap 6-on/3-off:


Event #126: October 4, 2010 (2010.277) CUSDF & SI Data loss:


Event #125: September 30, 2010 (2010.273) ACS Suspend:


Event #124: September 9, 2010 (2010.252) SIC&DH Lockup:


Event #123: May 4, 2010 (2010.124) STIS MAMA1 HV Rampup problem:


Event #122: March 21, 2010 (2010.080) COS FUV Overlight:


Event #121: October 22, 2009 (2009.295) SIC&DH PIT Toggle Failure:


Event #120: July 28, 2009 (2009.209) NCS Safing:


Event #119: July 17, 2009 (2009.198) NCS Safing:


Event #118: July 09, 2009 (2009.190) STIS Suspend (while dumping MIE):


Event #117: July 06, 2009 (2009.187) STIS Suspend:


Event #116: June 23, 2009 (2009.174) ACS Suspend:


Event #115: June 23, 2009 (2009.174) COS Slow Suspend:


Event #114: June 19, 2009 (2009.170) WFC3 Temperature Limit Violation: WFC3 Safed:


Event #113: June 15, 2009 (2008.354) SI C&DH Anomaly: PIT Toggle Test Failed:



Event #112: December 19, 2008 (2008.354) NCS Safing:


Event #111: October 15, 2008 (2008.290) Payload Safing: SIC&DH A-side Failure:


Event #110: October 15, 2008 (2008.290) ACS Safing:


Event #109: September 27, 2008 (2008.270) NSSC & Payload Safing:


Event #108: September 11, 2008 (2008.255) NICMOS Cryocooler Safing:


Event #107: September 10, 2008 (2008.254) WFPC2 Safing:


Event #106: July 9, 2008 (2008.191) NICMOS Suspend: FW#2:


Event #105: June 30, 2008 (2008.182) NICMOS Suspend: FW#2:


Event #104: March 8, 2008 (2008.069) NICMOS Suspend: FW#2:


Event #103: September 2, 2007 (2007.245) NICMOS Safing:


Event #103: August 31, 2007 (2007.243) Zero Gyro: Gyro 2 failure:


Event #102: June 7, 2007 (2007.158) NICMOS Suspend:


Event #101: January 27, 2007 (2007.027) Inertial hold. ACS Side-2 Electronics Failure:


Event #100: September 22, 2006 (2006.266) ACS Suspend:


Event #99: June 19, 2006 (2006.170) ACS Suspend. ACS Side-1 Electronics Failure:


Event #98: June 13, 2006 (2006.164) Zero Gyro (Mag Field check failed):


Event #97: April 17, 2006 (2006.107) BEA/MA Avoidance Check failure:


Event #96: March 18, 2006 (2006.077) ACS Suspend:


Event #95: April 10, 2005 (2005.100) NICMOS Suspend:


Event #94: March 21, 2005 (2005.080) NICMOS Buffer Messages:



Event #93: March 12, 2005 (2005.071) ACS HV Shutdown:



Event #92: December 28, 2004 (2004.363) ACS Suspend:


Event #91: October 18, 2004 (2004.292) NICMOS Suspend:


Event #90: August 3, 2004 (2004.216) STIS Suspend. Side-2 Electronics failure:


Event #89: July 6, 2004 (2004.188) Zero Gyro Safe Mode:


Event #88: March 9, 2004 (2004.069) NICMOS Suspend:


Event #87: March 3, 2004 (2004.063) NICMOS Suspend:


Event #86: January 6, 2004 (2004.006) NICMOS Suspend:


Event #85: August 2, 2003 (2003.214) NCS Safing: Circulator voltage out of limit:


Event #84: April 29, 2003 (2003.119) Gyro 3 Stall: HST in Zero Gyro. Gyro 3 restart failure:


Event #83: April 13, 2003 (2003.103) Gyro 3 Stall: HST in Zero Gyro:


Event #82: February 7, 2003 (2003.038) NICMOS Suspend:


Event #81: January 23, 2003 (2003.023) Spacecraft Inertial Hold:


Event #80: November 28, 2002 (2002.332) Zero Gyro Safe Mode: Gyro 3 Overcurrent & Stall:



Event #79: November 29, 2001 (2001.333) STIS Safing:


Event #78: May 16, 2001 (2001.136) STIS Safing. Side-1 Electronics Failure:


Event #77: April 28, 2001 (2001.118) Gyro 5 Stall: HST in Zero Gyro Safemode, Gyro 5 Failure:


Event #76: March 5, 2001 (2001.064) Software Sunpoint Safe Mode: Magnetic Torquing Bar:


Event #75: January 3, 2001 (2001.003) Sunpoint Safe Mode: SADE 2R:


Event #74: November 1, 2000 (2000.305) WFPC Safing. Shutter :


Event #73: October 2, 2000 (2000.276) WFPC Safing :


Event #72: August 5, 2000 (2000.218) HST in PSEA Sunpoint Safemode :



Event #71: November 13, 1999 (1999.317) HST in Zero Gyro Safemode :


Event #70: September 20, 1999 (1999.263) STIS NUV MAMA HV Shutdown:


Event #69: May 7, 1999 (1999.127) HST in Inertial Hold Safemode:


Event #68: February 24, 1999 (1999.055) HST in Inertial Hold Safemode:


Event #67: December 15, 1998 (1998.348) NICMOS Suspend (no prime science lost!):


Event #66: August 23, 1998 (1998.235) STIS Suspend (no prime orbits lost!):


Event #65: August 17, 1998 (1998.229) Slow STIS Suspend, recover, and manual suspend:


Event #64: May 18, 1998 (1998.138) Slow STIS Suspend:


Event #63: May 9, 1998 (1998.129) NICMOS Safing then Suspend:


Event #62: April 7, 1998 (1998.097) NICMOS Suspend:


Event #61: March 26, 1998 (1998.085) STIS Suspend:


Event #60: March 16, 1998 (1998.075) NICMOS Suspend:


Event #59: February 23, 1998 (1998.054) NICMOS Suspend:


Event #58: January 17, 1998 (1998.017) NICMOS Suspend:


Event #57: November 6, 1997 (1997.310) STIS Suspend:


Event #56: October 27, 1997 (1997.300) STIS Suspend:


Event #55: September 27, 1997 (1997.270) NICMOS Suspend:


Event #54: April 9, 1997 (1997.099) HST Zero Gyro Safemode - Gyro 4 Failure:


Event #53: March 31, 1997 (1997.090) HST Software Sunpoint Safemode:



Event #52: February 6, 1997 (1997.037) HRS Safemode -End of GHRS observations:


Event #51: December 17, 1996 (1996.253) Hardware Sunpoint Safemode:


Event #50: December 14, 1996 (1996.349) RWA#1 (again):


Event #49: November 24, 1996 (1996.329) FOS Safing:


Event #48: October 30, 1996 (1996.304) RWA#1 Software Sunpoint Safemode:


Event #47: July 13, 1996 (1996.195) Safing Event:


Potential Safing Event: August 16, 1995 (1995.228):


Potential Safing Event: April 17, 1995 (1995.107):


Event #46: January 8, 1995 (1995.008) HST SADIE Safing Event:


Event #45: November 30, 1994 (1994.332) FOS Safing Event:


Event #44: October 24, 1994 (1994.297) FOS Safing Event:


Past Safings Report (Events 1-43) as of 02-24-95