273b4d9a_tion_Services_Routers____Cisco_ot_counters_Field_Descriptions_Description
[Field] SPA insertion time [Description] 
Time the SPA module was last physically inserted or power-cycled.
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