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 Jul 26, 14:20 UTC
Flights observed
110
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:20 UTC

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 Air China 4 2026-07-25
CCA1353 Air China 4 2026-07-21
CCA811 Air China 3 2026-07-26
CCA1845 - 3 2026-06-30
CCA1635 - 3 2026-07-06
CCA109 - 3 2026-07-03
CCA809 - 2 2026-07-06
CCA4108 Air China 2 2026-05-18
CCA1919 - 2 2026-06-26
CCA1693 Air China 2 2026-07-23
CCA1554 - 2 2026-06-03
CCA1539 - 2 2026-06-03
CCA1368 Air China 2 2026-07-25
CCA1367 Air China 2 2026-07-25
CCA1362 Air China 2 2026-07-24
CCA1232 - 2 2026-07-05
CCA110 - 2 2026-07-03
CCA746 Air China 1 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA1129 PEK → HLD Jul 26, 14:05 UTCJul 26, 14:20 UTC15m
2026-07-26 CCA811 PEK → VVO Jul 26, 05:15 UTCJul 26, 05:25 UTC10m
2026-07-26 CCA1932 NNG → PEK Jul 26, 03:05 UTCJul 26, 03:15 UTC10m
2026-07-25 CCA1931 PEK → NNG Jul 25, 12:05 UTCJul 25, 12:25 UTC20m
2026-07-25 CCA1368 SZX → PEK Jul 25, 09:30 UTCJul 25, 09:45 UTC15m
2026-07-25 CCA1368 SZX → PEK Jul 25, 07:00 UTCJul 25, 07:15 UTC15m
2026-07-25 CCA1367 PEK → SZX Jul 25, 04:30 UTCJul 25, 04:40 UTC10m
2026-07-25 CCA1367 PEK → SZX Jul 25, 01:45 UTCJul 25, 02:30 UTC45m
2026-07-24 CCA1288 URC → PEK Jul 24, 19:05 UTCJul 24, 19:20 UTC15m
2026-07-24 CCA1287 PEK → URC Jul 24, 13:10 UTCJul 24, 13:25 UTC15m
2026-07-24 CCA1362 HAK → PEK Jul 24, 02:45 UTCJul 24, 11:15 UTC8h 30m
2026-07-23 CCA1693 PEK → JMU Jul 23, 13:10 UTCJul 23, 13:20 UTC10m
2026-07-23 CCA811 PEK → VVO Jul 23, 05:25 UTCJul 23, 05:35 UTC10m
2026-07-22 CCA1732 SZX → HGH Jul 22, 15:55 UTCJul 22, 16:05 UTC10m
2026-07-21 CCA1133 PEK → HLD Jul 21, 23:00 UTCJul 21, 23:15 UTC15m
2026-07-21 CCA1353 PEK → SYX Jul 21, 06:30 UTCJul 21, 09:35 UTC3h 5m
2026-07-21 CCA1575 PEK → TAO Jul 21, 01:15 UTCJul 21, 01:25 UTC10m
2026-07-19 CCA4336 SZX → CTU Jul 19, 15:00 UTCJul 19, 15:15 UTC15m
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

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 Jul 26, 14:20 UTC.
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, CCA1353, CCA811.