{"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168751,"usec":786581},"freq":136975000,"burst_len_octets":53,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.241451,"noise_level":-15.602255,"freq_skew":-0.174899,"avlc":{"src":{"addr":"3CEF03","type":"Aircraft","status":"Airborne"},"dst":{"addr":"240557","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":7,"sseq":2,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":4,"chan_num":6,"sseq":5,"rseq":7,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":0,"priority":14,"lifetime":127.500000,"flags":224,"pdu_id":7,"idrp":{"err":false,"pdu_type":4,"pdu_type_name":"Keepalive","seq":3,"ack":3,"credit_offered":10,"credit_avail":4}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168757,"usec":267013},"freq":136975000,"burst_len_octets":53,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.456314,"noise_level":-15.368499,"freq_skew":-0.061762,"avlc":{"src":{"addr":"3CEF03","type":"Aircraft","status":"Airborne"},"dst":{"addr":"240557","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":7,"sseq":2,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":4,"chan_num":6,"sseq":5,"rseq":7,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":0,"priority":14,"lifetime":127.500000,"flags":224,"pdu_id":7,"idrp":{"err":false,"pdu_type":4,"pdu_type_name":"Keepalive","seq":3,"ack":3,"credit_offered":10,"credit_avail":4}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168758,"usec":55943},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.195429,"noise_level":-15.727472,"freq_skew":-0.028258,"avlc":{"src":{"addr":"3CEF03","type":"Aircraft","status":"Airborne"},"dst":{"addr":"240557","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":3}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168770,"usec":390222},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.062130,"noise_level":-15.836221,"freq_skew":2.665722,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":0}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168772,"usec":769014},"freq":136975000,"burst_len_octets":53,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.694938,"noise_level":-16.655958,"freq_skew":2.438059,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":5,"sseq":0,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":4,"rseq":6,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":64,"priority":14,"lifetime":50.000000,"flags":192,"pdu_id":20,"idrp":{"err":false,"pdu_type":4,"pdu_type_name":"Keepalive","seq":3,"ack":6,"credit_offered":5,"credit_avail":4}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168798,"usec":133006},"freq":136975000,"burst_len_octets":34,"hdr_bits_fixed":1,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.125170,"noise_level":-15.287904,"freq_skew":-0.068816,"avlc":{"src":{"addr":"3CEF03","type":"Aircraft","status":"Airborne"},"dst":{"addr":"240557","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":3,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":4,"chan_num":6,"sseq":6,"rseq":0,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":127.000000,"flags":224,"pdu_id":13,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":7758,"credit":3,"rseq":4,"variable_part_params":[{"name":"atn_checksum","value":[171,17,213,9]}]}]}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168798,"usec":138017},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.206814,"noise_level":-15.264963,"freq_skew":2.263763,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":2}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168798,"usec":904249},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.197282,"noise_level":-15.149906,"freq_skew":-0.063016,"avlc":{"src":{"addr":"3CEF03","type":"Aircraft","status":"Airborne"},"dst":{"addr":"240557","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":4}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168798,"usec":906328},"freq":136975000,"burst_len_octets":80,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.669327,"noise_level":-15.882198,"freq_skew":2.303447,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":6,"sseq":2,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":5,"rseq":0,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":50.000000,"flags":192,"pdu_id":21,"cotp":{"pdu_list":[{"err":false,"tpdu_code":208,"tpdu_code_descr":"Connect Confirm","extended":false,"src_ref":18,"dst_ref":7792,"credit":1,"proto_class":4,"options":0,"use_extended_pdu_formats":false,"variable_part_params":[{"name":"calling_transport_selector","value":[101,109]},{"name":"called_responding_transport_selector","value":[2,2]},{"name":"tpdu_size","value":1024},{"name":"checksum","value":[155,254]},{"name":"additional_options","value":[0]},{"name":"ack_time_ms","value":1000},{"name":"priority","value":3},{"name":"inactivity_timer_ms","value":360000}]}],"x225_spdu":{"spdu_id":240,"spdu_type":"Short Accept","x227_apdu":{"acse_apdu":{"choice":"aare","data":{"assoc_response":{"app_ctx_name":[1,3,27,3,1],"assoc_result":{"value":0,"value_descr":"accept"}}}},"cpdlc":{}}}}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168800,"usec":500335},"freq":136975000,"burst_len_octets":48,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.763349,"noise_level":-16.983459,"freq_skew":2.521129,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":7,"sseq":3,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":6,"rseq":1,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":50.000000,"flags":192,"pdu_id":22,"cotp":{"pdu_list":[{"err":false,"tpdu_code":240,"tpdu_code_descr":"Data","extended":false,"dst_ref":7792,"sseq":0,"req_of_ack":0,"eot":1,"reasm_status":"skipped","variable_part_params":[{"name":"checksum","value":[246,78]}]}],"cpdlc":{"atc_downlink_message":{"header":{"msg_id":0,"timestamp":{"date":{"year":2026,"month":2,"day":15},"time":{"hour":15,"min":19,"sec":57}},"logical_ack":"required"},"msg_data":{"msg_elements":[{"msg_element":{"choice_label":"CURRENT DATA AUTHORITY","choice":"dM99NULL","data":{}}}]}}}}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168802,"usec":50973},"freq":136975000,"burst_len_octets":32,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.101354,"noise_level":-16.664112,"freq_skew":2.241731,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":5,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":7,"rseq":3,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":65,"priority":11,"lifetime":50.000000,"flags":192,"pdu_id":23,"cotp":{"pdu_list":[{"err":false,"tpdu_code":96,"tpdu_code_descr":"Data Ack","extended":false,"dst_ref":7792,"credit":2,"rseq":1,"variable_part_params":[{"name":"checksum","value":[212,107]}]}]}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168813,"usec":47116},"freq":136975000,"burst_len_octets":13,"hdr_bits_fixed":0,"octets_corrected_by_fec":1,"idx":0,"sig_level":-5.638532,"noise_level":-15.883150,"freq_skew":1.740794,"avlc":{"src":{"addr":"44CE72","type":"Aircraft","status":"Airborne"},"dst":{"addr":"214AB7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":0}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168814,"usec":632495},"freq":136975000,"burst_len_octets":80,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.888351,"noise_level":-16.522816,"freq_skew":-3.624640,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":0,"poll":false,"x25":{"err":false,"pkt_type":11,"pkt_type_name":"Call Request","chan_group":11,"chan_num":255,"calling_addr":"22051724","facilities":[{"name":"fast_select","value":true},{"name":"max_pkt_size","value":{"from_calling_dte":128,"from_called_dte":128}},{"name":"window_size","value":{"from_calling_dte":7,"from_called_dte":7}},{"name":"called_addr_extension","value":[140,83,73,84,0,0,1]}],"compression_options":2,"compression_algos":["LREF"],"esis":{"err":false,"pdu_type":4,"pdu_type_name":"IS Hello","hold_time":180,"net":[71,0,39,65,84,82,65,0,72,83,212,0,0,0,0,0,0,0,1,0]}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168815,"usec":446759},"freq":136975000,"burst_len_octets":44,"hdr_bits_fixed":0,"octets_corrected_by_fec":2,"idx":0,"sig_level":-5.137578,"noise_level":-16.401438,"freq_skew":-3.598218,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":0,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".PH-HXK","mode":"2","label":"Q0","blk_id":"3","ack":"!","flight":"HV008W","msg_num":"S70","msg_num_seq":"A","msg_text":""}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168816,"usec":256499},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.382345,"noise_level":-16.242195,"freq_skew":-3.640554,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":1}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168820,"usec":918444},"freq":136975000,"burst_len_octets":44,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.551755,"noise_level":-15.799275,"freq_skew":-3.299139,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":1,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".PH-HXK","mode":"2","label":"Q0","blk_id":"3","ack":"!","flight":"HV008W","msg_num":"S70","msg_num_seq":"A","msg_text":""}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168827,"usec":771745},"freq":136975000,"burst_len_octets":85,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.219927,"noise_level":-15.949873,"freq_skew":-3.465535,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":2,"sseq":4,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":0,"rseq":2,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":64,"priority":14,"lifetime":50.000000,"flags":192,"pdu_id":1338,"idrp":{"err":false,"pdu_type":1,"pdu_type_name":"Open","seq":1,"ack":2,"credit_offered":5,"credit_avail":3,"hold_time":900,"max_pdu_size":3000,"src_rdi":[71,0,39,65,84,82,65,0,72,83,212],"ribatts_set":[{"name":"ribatt","value":[{"name":"security","value":{"reg_id":[6,4,43,27,0,0]}}]}],"auth_mech":1,"auth_mech_name":"simple checksum"}}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168828,"usec":548205},"freq":136975000,"burst_len_octets":55,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.357403,"noise_level":-16.293362,"freq_skew":-3.570375,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":3,"sseq":4,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".PH-HXK","mode":"2","label":"SA","blk_id":"4","ack":"!","flight":"HV008W","msg_num":"S71","msg_num_seq":"A","msg_text":"0E21520272/","media-adv":{"err":false,"version":0,"current_link":{"code":"2","descr":"VDL2","established":true,"time":{"hour":15,"min":20,"sec":27}},"links_avail":[{"code":"2","descr":"VDL2"}]}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168830,"usec":145063},"freq":136975000,"burst_len_octets":105,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.501326,"noise_level":-15.992522,"freq_skew":2.235478,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":1,"sseq":5,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".PH-EXJ","mode":"2","label":"H1","blk_id":"9","ack":"!","flight":"KL1307","msg_num":"C07","msg_num_seq":"A","sublabel":"CF","msg_text":"FDE1520190215ABP\n15181815310 0 0\n15184205310 0 0\n"}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168830,"usec":909448},"freq":136975000,"burst_len_octets":16,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.761680,"noise_level":-16.826801,"freq_skew":-3.598815,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Selective Reject","pf":false,"rseq":4,"unknown_proto":{"data":[160,193]}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168832,"usec":429121},"freq":136975000,"burst_len_octets":105,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.748592,"noise_level":-17.289726,"freq_skew":2.247615,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":2,"sseq":6,"poll":false,"acars":{"err":false,"crc_ok":true,"more":false,"reg":".PH-EXJ","mode":"2","label":"H1","blk_id":"0","ack":"!","flight":"KL1307","msg_num":"C08","msg_num_seq":"A","sublabel":"CF","msg_text":"FDE1520190215ABP\n15181815310 0 0\n15184205310 0 0\n"}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168833,"usec":949754},"freq":136975000,"burst_len_octets":47,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-5.744450,"noise_level":-16.940792,"freq_skew":-3.670118,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":4,"sseq":7,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":1,"rseq":4,"more":false,"reasm_status":"skipped","esis":{"err":false,"pdu_type":4,"pdu_type_name":"IS Hello","hold_time":65535,"net":[71,0,39,65,84,82,65,0,72,83,212,0,0,0,0,0,0,0,1,0]}}}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168834,"usec":709660},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":0,"idx":0,"sig_level":-4.481190,"noise_level":-16.795435,"freq_skew":2.500046,"avlc":{"src":{"addr":"4853F4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"20B677","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":7}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168837,"usec":832620},"freq":136975000,"burst_len_octets":14,"hdr_bits_fixed":0,"octets_corrected_by_fec":1,"idx":0,"sig_level":-6.491749,"noise_level":-16.728786,"freq_skew":-3.504070,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Response","frame_type":"S","cmd":"Receive Ready","pf":false,"rseq":0}}} {"vdl2":{"app":{"name":"dumpvdl2","ver":"2.3.0-cd31c2d"},"t":{"sec":1771168840,"usec":139617},"freq":136975000,"burst_len_octets":33,"hdr_bits_fixed":0,"octets_corrected_by_fec":1,"idx":0,"sig_level":-5.542803,"noise_level":-16.407009,"freq_skew":-3.406524,"avlc":{"src":{"addr":"4853D4","type":"Aircraft","status":"Airborne"},"dst":{"addr":"2405B7","type":"Ground station"},"cr":"Command","frame_type":"I","rseq":0,"sseq":2,"poll":false,"x25":{"err":false,"pkt_type":0,"pkt_type_name":"Data","chan_group":11,"chan_num":255,"sseq":5,"rseq":7,"more":false,"reasm_status":"skipped","clnp":{"err":false,"compressed":true,"local_ref_a":0,"priority":11,"lifetime":50.000000,"flags":192,"pdu_id":1342,"cotp":{"pdu_list":[{"err":false,"tpdu_code":192,"tpdu_code_descr":"Disconnect Confirm","extended":false,"src_ref":4,"dst_ref":7623,"variable_part_params":[{"name":"checksum","value":[206,184]}]}]}}}}}}