Apparatus

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sensors Mode-S transponder

781325

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1218 · BOEING 737-800

Hex
781325
Octal
36011445
Decimal
7,869,221
Country
CN
Tail
B-1218
Type
B738
No current signal · last broadcast 6d ago
Flights observed
100
Distinct callsigns
20
Country
CN
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 781325.

Country allocation

The ICAO 24-bit address 781325 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 20 distinct

Callsign Airline Flights Last seen
CCD1939 Dalian Airlines 11 2026-07-24
CCD1906 - 10 2026-06-22
CCD1617 - 10 2026-07-22
CCD1905 Dalian Airlines 7 2026-07-22
CCD1951 - 5 2026-06-27
CCD1503 Dalian Airlines 5 2026-07-23
CCD1463 Dalian Airlines 5 2026-07-24
CCD1235 - 5 2026-06-29
CCD1940 Dalian Airlines 4 2026-07-24
CCD1923 - 4 2026-06-29
CCD1236 - 4 2026-06-28
CCD1827 - 3 2026-06-24
CCD8908 - 2 2026-07-02
CCD1937 - 2 2026-07-20
CCD1935 Dalian Airlines 2 2026-06-23
CCD1535 - 2 2026-06-25
CCD1464 Dalian Airlines 2 2026-07-24
CCD8971 - 1 2026-04-21
CCD892T - 1 2026-07-06
CCD8927 - 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CCD1839 PEK → NGB Jul 25, 01:10 UTCJul 25, 01:40 UTC30m
2026-07-24 CCD1464 KWE → PEK Jul 24, 15:00 UTCJul 24, 15:25 UTC25m
2026-07-24 CCD1463 PEK → KWE Jul 24, 08:20 UTCJul 24, 08:45 UTC25m
2026-07-24 CCD1940 KWL → PEK Jul 24, 06:15 UTCJul 24, 06:30 UTC15m
2026-07-24 CCD1939 PEK → KWL Jul 24, 00:10 UTCJul 24, 00:35 UTC25m
2026-07-23 CCD1503 PEK → NKG Jul 23, 10:55 UTCJul 23, 11:10 UTC15m
2026-07-22 CCD1617 - Jul 22, 23:30 UTCJul 22, 23:40 UTC10m
2026-07-22 CCD1905 PEK → ZUH Jul 22, 01:35 UTCJul 22, 01:55 UTC20m
2026-07-20 CCD1937 - Jul 20, 11:45 UTCJul 20, 12:15 UTC30m
2026-07-20 CCD1939 PEK → KWL Jul 20, 00:10 UTCJul 20, 00:30 UTC20m
2026-07-19 CCD1463 PEK → KWE Jul 19, 08:30 UTCJul 19, 08:45 UTC15m
2026-07-19 CCD1940 KWL → PEK Jul 19, 06:10 UTCJul 19, 06:20 UTC10m
2026-07-19 CCD1939 PEK → KWL Jul 19, 00:00 UTCJul 19, 00:20 UTC20m
2026-07-17 CCD1617 - Jul 17, 23:25 UTCJul 17, 23:35 UTC10m
2026-07-17 CCD1464 - Jul 17, 15:05 UTCJul 17, 15:25 UTC20m
2026-07-17 CCD1463 PEK → KWE Jul 17, 08:45 UTCJul 17, 08:59 UTC15m
2026-07-17 CCD1940 KWL → PEK Jul 17, 06:25 UTCJul 17, 06:35 UTC10m
2026-07-17 CCD1939 - Jul 17, 00:04 UTCJul 17, 00:30 UTC25m
2026-07-15 CCD1617 - Jul 15, 23:25 UTCJul 15, 23:35 UTC10m
2026-07-15 CCD1937 - Jul 15, 09:35 UTCJul 15, 09:50 UTC15m
2026-07-12 CCD8914 - Jul 12, 14:35 UTCJul 13, 10:00 UTC19h 25m
2026-07-12 CCD8913 - Jul 12, 12:20 UTCJul 12, 12:45 UTC25m
2026-07-06 CCD892T - Jul 6, 02:50 UTCJul 6, 03:00 UTC10m
2026-07-02 CCD8908 - Jul 2, 13:55 UTCJul 2, 14:05 UTC10m
2026-07-01 CCD8908 - Jul 1, 14:55 UTCJul 1, 15:10 UTC15m
2026-07-01 CCD8906 - Jul 1, 10:20 UTCJul 1, 10:30 UTC10m
2026-06-30 CCD8902 - Jun 30, 12:10 UTCJun 30, 12:20 UTC10m
2026-06-29 CCD1617 - Jun 29, 23:34 UTCJun 29, 23:44 UTC10m
2026-06-29 CCD1235 - Jun 29, 09:14 UTCJun 29, 09:34 UTC20m
2026-06-29 CCD1923 - Jun 29, 01:20 UTCJun 29, 01:39 UTC20m
2026-06-28 CCD1236 - Jun 28, 14:04 UTCJun 28, 14:25 UTC20m
2026-06-28 CCD1235 - Jun 28, 09:45 UTCJun 28, 10:10 UTC25m
2026-06-28 CCD1923 - Jun 28, 01:04 UTCJun 28, 01:25 UTC20m
2026-06-27 CCD1952 - Jun 27, 07:39 UTCJun 27, 07:49 UTC10m
2026-06-27 CCD1951 - Jun 27, 01:35 UTCJun 27, 01:49 UTC15m
2026-06-26 CCD1815 - Jun 26, 09:00 UTCJun 26, 09:10 UTC10m
2026-06-26 CCD1939 - Jun 26, 00:05 UTCJun 26, 00:30 UTC25m
2026-06-25 CCD1535 - Jun 25, 08:45 UTCJun 25, 08:55 UTC10m
2026-06-25 CCD1939 - Jun 25, 00:09 UTCJun 25, 00:24 UTC15m
2026-06-24 CCD1827 - Jun 24, 10:04 UTCJun 24, 10:19 UTC15m
2026-06-24 CCD1951 - Jun 24, 01:30 UTCJun 24, 01:55 UTC25m
2026-06-23 CCD1935 PEK → NNG Jun 23, 03:25 UTCJun 23, 03:45 UTC20m
2026-06-22 CCD1906 - Jun 22, 08:29 UTCJun 22, 08:40 UTC10m
2026-06-22 CCD1906 - Jun 22, 06:00 UTCJun 22, 06:15 UTC15m
2026-06-22 CCD1905 - Jun 22, 01:25 UTCJun 22, 01:44 UTC20m
2026-06-21 CCD1906 - Jun 21, 05:59 UTCJun 21, 06:14 UTC15m
2026-06-21 CCD1905 - Jun 21, 01:35 UTCJun 21, 01:59 UTC25m
2026-06-20 CCD1503 - Jun 20, 10:15 UTCJun 20, 10:29 UTC15m
2026-06-19 CCD1617 - Jun 19, 23:25 UTCJun 19, 23:34 UTC10m
2026-06-19 CCD1906 - Jun 19, 09:24 UTCJun 19, 09:40 UTC15m

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.

Prefer a tail-number view? See the B-1218 page for operator, model, and routing details .

Mode-S 781325 frequently asked

What is Mode-S code 781325?
781325 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1218.
Where is Mode-S 781325 registered?
Mode-S code 781325 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781325 broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781325, octal 36011445, decimal 7,869,221.
What flights does 781325 operate?
Mode-S 781325 has broadcast 20 distinct callsigns, including CCD1939, CCD1906, CCD1617, CCD1905, CCD1951.