Apparatus

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sensors Mode-S transponder

781D48

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-328N · AIRBUS A-321neo

Hex
781D48
Octal
36016510
Decimal
7,871,816
Country
CN
Tail
B-328N
Type
A21N
No current signal · last broadcast 8d ago
Flights observed
92
Distinct callsigns
20
Country
CN
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 781D48.

Country allocation

The ICAO 24-bit address 781D48 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
CCA741 - 11 2026-07-09
CCA742 - 10 2026-07-09
CCA1931 - 3 2026-06-24
CCA1845 - 3 2026-06-30
CCA1635 - 3 2026-07-06
CCA1353 Air China 3 2026-06-27
CCA109 - 3 2026-07-03
CCA809 - 2 2026-07-06
CCA4108 Air China 2 2026-05-18
CCA1919 - 2 2026-06-26
CCA1554 - 2 2026-06-03
CCA1539 - 2 2026-06-03
CCA1232 - 2 2026-07-05
CCA110 - 2 2026-07-03
CCA811 Air China 1 2026-05-28
CCA746 Air China 1 2026-06-16
CCA4326 Air China 1 2026-04-27
CCA4325 Air China 1 2026-04-27
CCA4314 Air China 1 2026-04-17
CCA4110 - 1 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 CCA4110 - Jul 9, 12:00 UTCJul 9, 12:20 UTC20m
2026-07-09 CCA742 - Jul 9, 09:45 UTCJul 9, 09:55 UTC10m
2026-07-09 CCA742 - Jul 9, 06:40 UTCJul 9, 06:50 UTC10m
2026-07-09 CCA741 - Jul 9, 04:15 UTCJul 9, 04:25 UTC10m
2026-07-09 CCA741 - Jul 9, 01:30 UTCJul 9, 01:50 UTC20m
2026-07-08 CCA1409 - Jul 8, 08:15 UTCJul 8, 08:40 UTC25m
2026-07-08 CCA1706 - Jul 8, 00:55 UTCJul 8, 01:05 UTC10m
2026-07-07 CCA1871 - Jul 7, 14:35 UTCJul 7, 14:45 UTC10m
2026-07-06 CCA1343 - Jul 6, 23:00 UTCJul 6, 23:20 UTC20m
2026-07-06 CCA1635 - Jul 6, 11:50 UTCJul 6, 12:00 UTC10m
2026-07-06 CCA809 - Jul 6, 04:05 UTCJul 6, 04:15 UTC10m
2026-07-05 CCA1821 - Jul 5, 16:20 UTCJul 5, 16:40 UTC20m
2026-07-05 CCA1232 - Jul 5, 04:15 UTCJul 5, 04:40 UTC25m
2026-07-04 CCA1231 - Jul 4, 23:35 UTCJul 4, 23:55 UTC20m
2026-07-04 CCA1377 - Jul 4, 07:25 UTCJul 4, 07:45 UTC20m
2026-07-03 CCA1232 - Jul 3, 23:55 UTCJul 4, 04:50 UTC4h 55m
2026-07-03 CCA110 - Jul 3, 11:15 UTCJul 3, 11:30 UTC15m
2026-07-03 CCA109 - Jul 3, 07:40 UTCJul 3, 08:20 UTC40m
2026-07-03 CCA109 - Jul 3, 05:05 UTCJul 3, 05:25 UTC20m
2026-07-03 CCA1206 - Jul 3, 01:55 UTCJul 3, 02:20 UTC25m
2026-07-02 CCA1205 - Jul 2, 14:50 UTCJul 2, 15:05 UTC15m
2026-07-02 CCA742 - Jul 2, 10:10 UTCJul 2, 10:30 UTC20m
2026-07-02 CCA741 - Jul 2, 08:05 UTCJul 2, 08:25 UTC20m
2026-07-02 CCA741 - Jul 2, 01:30 UTCJul 2, 05:45 UTC4h 15m
2026-07-01 CCA1635 - Jul 1, 13:15 UTCJul 1, 13:25 UTC10m
2026-07-01 CCA1714 - Jul 1, 04:40 UTCJul 1, 04:50 UTC10m
2026-06-30 CCA1845 - Jun 30, 15:45 UTCJun 30, 15:55 UTC10m
2026-06-28 CCA742 - Jun 28, 09:55 UTCJun 28, 10:04 UTC10m
2026-06-28 CCA742 - Jun 28, 06:49 UTCJun 28, 07:14 UTC25m
2026-06-28 CCA741 - Jun 28, 03:59 UTCJun 28, 04:20 UTC20m
2026-06-28 CCA741 - Jun 28, 01:15 UTCJun 28, 01:34 UTC20m
2026-06-27 CCA1353 PEK → SYX Jun 27, 07:19 UTCJun 27, 12:55 UTC5h 35m
2026-06-26 CCA1919 - Jun 26, 09:59 UTCJun 26, 12:44 UTC2h 45m
2026-06-25 CCA1369 PEK → SYX Jun 25, 23:34 UTCJun 25, 23:55 UTC20m
2026-06-25 CCA110 - Jun 25, 10:09 UTCJun 25, 10:25 UTC15m
2026-06-25 CCA109 - Jun 25, 05:00 UTCJun 25, 07:49 UTC2h 50m
2026-06-24 CCA1931 - Jun 24, 12:20 UTCJun 24, 12:30 UTC10m
2026-06-24 CCA742 - Jun 24, 06:50 UTCJun 24, 07:10 UTC20m
2026-06-24 CCA741 - Jun 24, 04:10 UTCJun 24, 04:34 UTC25m
2026-06-24 CCA741 - Jun 24, 01:30 UTCJun 24, 01:49 UTC20m
2026-06-23 CCA1252 - Jun 23, 08:00 UTCJun 23, 08:20 UTC20m
2026-06-22 CCA1251 - Jun 22, 23:55 UTCJun 23, 00:15 UTC20m
2026-06-22 CCA1938 - Jun 22, 16:24 UTCJun 22, 16:45 UTC20m
2026-06-22 CCA1937 - Jun 22, 10:40 UTCJun 22, 10:55 UTC15m
2026-06-22 CCA809 - Jun 22, 03:14 UTCJun 22, 03:24 UTC10m
2026-06-20 CCA1735 - Jun 20, 14:05 UTCJun 20, 14:24 UTC20m
2026-06-17 CCA742 HAN → PEK Jun 17, 06:45 UTCJun 17, 07:05 UTC20m
2026-06-16 CCA746 PNH → PEK Jun 16, 15:20 UTCJun 17, 04:10 UTC12h 51m
2026-06-14 CCA742 HAN → PEK Jun 14, 06:35 UTCJun 14, 07:00 UTC25m
2026-06-13 CCA741 PEK → HAN Jun 13, 12:25 UTCJun 14, 04:15 UTC15h 50m

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-328N page for operator, model, and routing details .

Mode-S 781D48 frequently asked

What is Mode-S code 781D48?
781D48 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-328N.
Where is Mode-S 781D48 registered?
Mode-S code 781D48 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781D48 broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781D48, octal 36016510, decimal 7,871,816.
What flights does 781D48 operate?
Mode-S 781D48 has broadcast 20 distinct callsigns, including CCA741, CCA742, CCA1931, CCA1845, CCA1635.