273b4d9a_tion_Services_Routers____Cisco_ot_counters_Field_Descriptions_Description
[Field] SPA uptime [Description] 
The time in service or amount of time since the module was last out of service due to a reload, power cycle, or configuration event.
Cisco ASR 9000 Series Aggregation Services Router System Management Command Reference, Release 4.2.x - Hardware Redundancy and Node Administration Commands on the Cisco ASR 9000 Series Router [Cisco ASR 9000 Series Aggregation Services Routers] - Cisco