diff --git a/firmware/application/apps/ui_adsb_rx.cpp b/firmware/application/apps/ui_adsb_rx.cpp
index 596734f8..90771799 100644
--- a/firmware/application/apps/ui_adsb_rx.cpp
+++ b/firmware/application/apps/ui_adsb_rx.cpp
@@ -107,7 +107,8 @@ void ADSBLogger::log(const ADSBLogEntry& log_entry) {
         log_line += " Type:" + to_string_dec_uint(log_entry.vel_type) +
                     " Hdg:" + to_string_dec_uint(log_entry.vel.heading) +
                     " Spd: " + to_string_dec_int(log_entry.vel.speed);
-
+    if (log_entry.sil != 0)
+        log_line += " Sil:" + to_string_dec_uint(log_entry.sil);
     log_file.write_entry(log_line);
 }
 
@@ -354,11 +355,12 @@ void ADSBRxDetailsView::refresh_ui() {
 
     text_callsign.set(entry_.callsign);
     text_infos.set(entry_.info_string);
+    std::string str_sil = (entry_.sil > 0) ? " Sil:" + to_string_dec_uint(entry_.sil) : "";
     if (entry_.velo.heading < 360 && entry_.velo.speed >= 0)
         text_info2.set("Hdg:" + to_string_dec_uint(entry_.velo.heading) +
-                       " Spd:" + to_string_dec_int(entry_.velo.speed));
+                       " Spd:" + to_string_dec_int(entry_.velo.speed) + str_sil);
     else
-        text_info2.set("");
+        text_info2.set(str_sil);
 
     text_frame_pos_even.set(to_string_hex_array(entry_.frame_pos_even.get_raw_data(), 14));
     text_frame_pos_odd.set(to_string_hex_array(entry_.frame_pos_odd.get_raw_data(), 14));
@@ -471,7 +473,6 @@ void ADSBRxView::on_frame(const ADSBFrameMessage* message) {
                     "Alt:" + to_string_dec_int(entry.pos.altitude) +
                     " Lat:" + to_string_decimal(entry.pos.latitude, 2) +
                     " Lon:" + to_string_decimal(entry.pos.longitude, 2);
-
                 entry.set_info_string(std::move(str_info));
             }
 
@@ -479,6 +480,8 @@ void ADSBRxView::on_frame(const ADSBFrameMessage* message) {
             entry.set_frame_velo(frame);
             log_entry.vel = entry.velo;
             log_entry.vel_type = msg_sub;
+        } else if (msg_type == AIRBORNE_OP_STATUS) {  // for ver 1
+            entry.sil = frame.get_sil_value();
         }
     }
 
diff --git a/firmware/application/apps/ui_adsb_rx.hpp b/firmware/application/apps/ui_adsb_rx.hpp
index 329bbc45..46730c99 100644
--- a/firmware/application/apps/ui_adsb_rx.hpp
+++ b/firmware/application/apps/ui_adsb_rx.hpp
@@ -54,6 +54,8 @@ namespace ui {
 #define AIRBORNE_POS_GPS_L 20  // airborne position (lowest type id)
 #define AIRBORNE_POS_GPS_H 22  // airborne position (highest type id)
 
+#define AIRBORNE_OP_STATUS 31  // Aircraft operation status
+
 #define RESERVED_L 23  // reserved for other uses
 #define RESERVED_H 31  // reserved for other uses
 
@@ -102,6 +104,8 @@ struct AircraftRecentEntry {
     std::string callsign{};
     std::string info_string{};
 
+    uint8_t sil{0};  // Surveillance integrity level
+
     AircraftRecentEntry(const uint32_t ICAO_address)
         : ICAO_address{ICAO_address} {
         this->icao_str = to_string_hex(ICAO_address, 6);
@@ -173,6 +177,7 @@ struct ADSBLogEntry {
     adsb_pos pos{};
     adsb_vel vel{};
     uint8_t vel_type{};
+    uint8_t sil{};
 };
 
 // TODO: Make logging optional.
diff --git a/firmware/common/adsb_frame.hpp b/firmware/common/adsb_frame.hpp
index 83778ac9..1f05f744 100644
--- a/firmware/common/adsb_frame.hpp
+++ b/firmware/common/adsb_frame.hpp
@@ -46,6 +46,10 @@ class ADSBFrame {
         return (raw_data[4] & 7);
     }
 
+    uint8_t get_sil_value() {
+        return ((raw_data[10] >> 6) & 0b11);  // 83-84 bits
+    }
+
     uint32_t get_ICAO_address() {
         return (raw_data[1] << 16) + (raw_data[2] << 8) + raw_data[3];
     }