{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737747,"usec":653724},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-7.155934,"noise_level":-37.694515,"freq_skew":-3.202345,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":5}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737778,"usec":890439},"freq":136975000,"burst_len_octets":44,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-9.626092,"noise_level":-36.757904,"freq_skew":-3.249787,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":7,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":4,"rseq":3,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":68,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":132,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":38362,"credit":1,"rseq":0,"variable_part_params":[{"name":"flow_control","value":{"acked_tpdu_nr":0,"acked_subseq":0,"acked_credit":15}},{"name":"atn_checksum","value":[94,79,170,222]}]}]}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737793,"usec":363761},"freq":136975000,"burst_len_octets":62,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-9.560472,"noise_level":-38.107838,"freq_skew":-3.493855,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":0,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":5,"rseq":4,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":67,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":133,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":55915,"credit":3,"rseq":4,"variable_part_params":[{"name":"atn_checksum","value":[6,232,145,157]}]},{"err":false,"tpdu_code":240,"tpdu_code_descr":"Data","extended":false,"dst_ref":55915,"sseq":3,"req_of_ack":0,"eot":1,"reasm_status":"skipped","variable_part_params":[{"name":"atn_checksum","value":[35,204,61,153]}]}],"cpdlc":{"atc_downlink_message":{"header":{"msg_id":3,"msg_ref":5,"timestamp":{"date":{"year":2026,"month":10,"day":11},"time":{"hour":16,"min":56,"sec":31}},"logical_ack":"notRequired"},"msg_data":{"msg_elements":[{"msg_element":{"choice_label":"LOGICAL ACKNOWLEDGMENT","choice":"dM100NULL","data":{}}}]}}}}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737795,"usec":652549},"freq":136975000,"burst_len_octets":44,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-11.265592,"noise_level":-39.285320,"freq_skew":-3.421613,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":2,"sseq":1,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".OO-SNJ","mode":"2","label":"_d","blk_id":"9","ack":"P","flight":"SN03FJ","msg_num":"S14","msg_num_seq":"A","msg_text":""}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737795,"usec":658687},"freq":136975000,"burst_len_octets":62,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-11.750288,"noise_level":-40.637096,"freq_skew":-3.246684,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":1,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":5,"rseq":4,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":67,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":133,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":55915,"credit":3,"rseq":4,"variable_part_params":[{"name":"atn_checksum","value":[6,232,145,157]}]},{"err":false,"tpdu_code":240,"tpdu_code_descr":"Data","extended":false,"dst_ref":55915,"sseq":3,"req_of_ack":0,"eot":1,"reasm_status":"skipped","variable_part_params":[{"name":"atn_checksum","value":[35,204,61,153]}]}],"cpdlc":{"atc_downlink_message":{"header":{"msg_id":3,"msg_ref":5,"timestamp":{"date":{"year":2026,"month":10,"day":11},"time":{"hour":16,"min":56,"sec":31}},"logical_ack":"notRequired"},"msg_data":{"msg_elements":[{"msg_element":{"choice_label":"LOGICAL ACKNOWLEDGMENT","choice":"dM100NULL","data":{}}}]}}}}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737797,"usec":173686},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-11.325727,"noise_level":-38.666168,"freq_skew":-3.444579,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":2}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737797,"usec":176302},"freq":136975000,"burst_len_octets":56,"hdr_bits_fixed":0,"octets_corrected_by_fec":2,"idx":0,"sig_level":-10.806276,"noise_level":-38.518444,"freq_skew":-3.447668,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":3,"sseq":2,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":6,"rseq":5,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":67,"priority":11,"lifetime":20.000000,"flags":246,"pdu_id":134,"cotp":{"pdu_list":[{"err":false,"tpdu_code":240,"tpdu_code_descr":"Data","extended":false,"dst_ref":55915,"sseq":4,"req_of_ack":0,"eot":1,"reasm_status":"skipped","variable_part_params":[{"name":"atn_checksum","value":[82,160,203,168]}]}],"x227_apdu":{"acse_apdu":{"choice":"rlre","data":{"release_response":{"reason":{"value":0,"value_descr":"normal"}}}},"cpdlc":{"atc_downlink_message":{"header":{"msg_id":4,"msg_ref":5,"timestamp":{"date":{"year":2026,"month":10,"day":11},"time":{"hour":16,"min":56,"sec":35}},"logical_ack":"notRequired"},"msg_data":{"msg_elements":[{"msg_element":{"choice_label":"WILCO","choice":"dM0NULL","data":{}}}]}}}}}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737800,"usec":215280},"freq":136975000,"burst_len_octets":56,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-7.750533,"noise_level":-34.156967,"freq_skew":-3.484127,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":5,"sseq":6,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".OO-SNJ","mode":"2","label":"_d","blk_id":"0","ack":"Q","flight":"SN03FJ","msg_num":"S15","msg_num_seq":"A","msg_text":""}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.6.0-5843a3a"},"t":{"sec":1791737800,"usec":215280},"freq":136975000,"burst_len_octets":56,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":1,"sig_level":-7.750533,"noise_level":-34.156967,"freq_skew":-3.484127,"avlc":{"src":{"addr":"44CDCA","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":true,"rseq":6}}}