****************************************************************************** dorismail 06-Nov-2006 15:02:12 Message No 0465 ****************************************************************************** Author: "Frank G. Lemoine" Subject: Jason-1 spacecraft in safe mode Author: F. Lemoine Subject: No 0465 : Jason-1 spacecraft in safe mode Dear Colleagues, The Jason-1 spacecraft has been in safehold since October 30. As per the project status message below, corrective measures are being taken by the CNES and JPL control centers. Sincerely, F.G. Lemoine NASA Goddard Space Flight Center ====================================================================== DATE: 30 October 2006, 1700 PDT PROJECT: Jason-1 DATE OF INCIDENT: 30 October 2006 LOCATION OF INCIDENT: In Earth Orbit DESCRIPTION OF INCIDENT: On a routine Jason-1 telemetry contact through the CNES Aussaguel (France) Earth Terminal on October 30 at 1326 PDT, numerous ground system telemetry alarms indicated that the satellite had transitioned to a Safe Mode state. CORRECTIVE ACTION: Per documented Safe Mode contingency procedures, commands were uplinked to command the satellite to a low-rate telemetry mode; it was also verified that the satellite was in a safe and power-positive sun-pointing configuration. Over several subsequent contact opportunities, attempts were made to read out recorded on-board engineering telemetry data in proximity to the Safe Mode transition point; however, early indications are these data were somehow corrupted in the on-board memory storage unit, and useful data around the anomaly event may not be present/available (it is possible this corruption may be a symptom or cause of the Safe Mode transition). IMPACT ON PROJECT AND SCHEDULE: No science data is being collected while the satellite is in a Safe Mode configuration, and the satellite currently remains in a stable, power-positive state. CNES is now managing and directing satellite contingency operations from the CNES operations center in Toulouse, France, with support from the JPL operations center. Additional incident report updates will be issued when the cause of the anomaly has been determined and a recovery plan/schedule is made available Cliquez sur l'url suivante https://www.mailcontrol.com/sr/BqTIahjqI3kU03BHyb91FHRQm!Y!FFxY5!3SmqgxDTijDo11enxyWW4zYHq8Ym4AhsOIMM9crt2Dyd2jyXHReT2dYddMDRJJ8DN0gYdmHMiuzb7ttnBHfVZltsxUtFwdxp9oYFZ4ppygNoHDNspelSCeHbuFCbrcYuSaUPwJA7pTGYu5bqxcf6mNawN7j6ez5FTX1iK8z4UmCqOVaLYxtFxrVhykbxl2 si ce message est ind?sirable (pourriel). Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr