Apparatus

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sensors Mode-S transponder

780039

ICAO 24-bit transponder address · allocated to China

Hex
780039
Octal
36000071
Decimal
7,864,377
Country
CN
Type
AN12
No current signal · last broadcast 21d ago
Flights observed
54
Distinct callsigns
2
Country
CN
Last broadcast
21d ago

Last known position

Most recent position reported by Mode-S 780039.

Country allocation

The ICAO 24-bit address 780039 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 2 distinct

Callsign Airline Flights Last seen
00000000 - 34 2026-07-25
0000000 - 20 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 00000000 - Jul 25, 05:05 UTCJul 25, 05:45 UTC40m
2026-07-25 00000000 - Jul 25, 00:50 UTCJul 25, 04:20 UTC3h 30m
2026-07-24 0000000 RGN → MDL Jul 24, 23:50 UTCJul 25, 00:10 UTC20m
2026-07-24 0000000 - Jul 24, 08:40 UTCJul 24, 09:10 UTC30m
2026-07-24 00000000 - Jul 24, 06:35 UTCJul 24, 08:35 UTC2h 0m
2026-07-24 00000000 - Jul 24, 03:00 UTCJul 24, 03:35 UTC35m
2026-07-24 00000000 - Jul 24, 00:55 UTCJul 24, 01:50 UTC55m
2026-07-23 00000000 - Jul 23, 07:20 UTCJul 23, 09:25 UTC2h 5m
2026-07-23 00000000 - Jul 23, 04:20 UTCJul 23, 04:55 UTC35m
2026-07-23 00000000 - Jul 23, 02:30 UTCJul 23, 03:30 UTC1h 0m
2026-07-23 00000000 - Jul 23, 01:00 UTCJul 23, 01:45 UTC45m
2026-07-22 0000000 - Jul 22, 03:45 UTCJul 22, 04:30 UTC45m
2026-07-22 0000000 - Jul 22, 02:20 UTCJul 22, 02:30 UTC10m
2026-07-21 00000000 RGN → RGN Jul 21, 23:45 UTCJul 21, 23:55 UTC10m
2026-07-21 0000000 - Jul 21, 06:50 UTCJul 21, 07:15 UTC25m
2026-07-21 00000000 - Jul 21, 04:40 UTCJul 21, 05:40 UTC1h 0m
2026-07-21 00000000 - Jul 21, 03:00 UTCJul 21, 04:15 UTC1h 15m
2026-07-20 0000000 - Jul 20, 09:15 UTCJul 20, 09:35 UTC20m
2026-07-20 0000000 - Jul 20, 08:05 UTCJul 20, 08:30 UTC25m
2026-07-20 0000000 - Jul 20, 02:20 UTCJul 20, 04:20 UTC2h 0m
2026-07-18 00000000 - Jul 18, 06:10 UTCJul 18, 06:35 UTC25m
2026-07-18 00000000 - Jul 18, 04:25 UTCJul 18, 04:45 UTC20m
2026-07-18 0000000 - Jul 18, 01:54 UTCJul 18, 02:45 UTC50m
2026-07-17 0000000 - Jul 17, 07:35 UTCJul 17, 08:35 UTC1h 0m
2026-07-17 0000000 - Jul 17, 04:49 UTCJul 17, 05:39 UTC50m
2026-07-17 0000000 RGN → RGN Jul 17, 02:39 UTCJul 17, 03:59 UTC1h 20m
2026-07-14 0000000 - Jul 14, 08:05 UTCJul 14, 08:20 UTC15m
2026-07-14 0000000 - Jul 14, 05:20 UTCJul 14, 06:50 UTC1h 30m
2026-07-14 00000000 - Jul 14, 03:00 UTCJul 14, 03:15 UTC15m
2026-07-11 00000000 - Jul 11, 12:00 UTCJul 11, 12:45 UTC45m
2026-07-11 00000000 - Jul 11, 10:35 UTCJul 11, 10:45 UTC10m
2026-07-11 00000000 - Jul 11, 03:20 UTCJul 11, 04:05 UTC45m
2026-07-10 00000000 - Jul 10, 06:25 UTCJul 10, 06:50 UTC25m
2026-07-10 00000000 - Jul 10, 04:50 UTCJul 10, 05:25 UTC35m
2026-07-10 0000000 - Jul 10, 04:05 UTCJul 10, 04:45 UTC40m
2026-07-10 0000000 - Jul 10, 01:55 UTCJul 10, 02:10 UTC15m
2026-07-09 0000000 - Jul 9, 17:00 UTCJul 9, 18:00 UTC1h 0m
2026-07-09 0000000 RGN → RGN Jul 9, 13:00 UTCJul 9, 15:55 UTC2h 55m
2026-07-09 00000000 - Jul 9, 07:15 UTCJul 9, 07:55 UTC40m
2026-07-09 00000000 - Jul 9, 02:50 UTCJul 9, 06:00 UTC3h 10m
2026-07-07 00000000 - Jul 7, 05:20 UTCJul 7, 05:40 UTC20m
2026-07-07 00000000 - Jul 7, 04:15 UTCJul 7, 04:40 UTC25m
2026-07-07 0000000 RGN → RGN Jul 7, 03:00 UTCJul 7, 03:20 UTC20m
2026-07-04 00000000 - Jul 4, 01:45 UTCJul 4, 03:35 UTC1h 50m
2026-07-03 00000000 - Jul 3, 01:40 UTCJul 3, 04:45 UTC3h 5m
2026-07-02 00000000 - Jul 2, 06:00 UTCJul 2, 06:35 UTC35m
2026-07-02 00000000 - Jul 2, 05:00 UTCJul 2, 05:30 UTC30m
2026-07-02 00000000 - Jul 2, 03:00 UTCJul 2, 03:25 UTC25m
2026-07-02 00000000 - Jul 2, 00:55 UTCJul 2, 02:00 UTC1h 5m
2026-07-01 00000000 - Jul 1, 10:25 UTCJul 1, 11:05 UTC40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Mode-S 780039 frequently asked

What is Mode-S code 780039?
780039 is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 780039 registered?
Mode-S code 780039 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780039 broadcasting right now?
No active broadcast right now. Last signal was 21d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780039, octal 36000071, decimal 7,864,377.
What flights does 780039 operate?
Mode-S 780039 has broadcast 2 distinct callsigns, including 00000000, 0000000.