Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781CE3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-327S · AIRBUS A-321neo

Hex
781CE3
Octal
36016343
Decimal
7,871,715
Country
CN
Tail
B-327S
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
57
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 781CE3.

Country allocation

The ICAO 24-bit address 781CE3 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
CCA4326 - 10 2026-06-28
CCA4312 - 8 2026-06-21
CCA4336 - 4 2026-07-12
CCA4324 - 3 2026-06-24
CCA4182 Air China 3 2026-05-30
CCA4102 Air China 3 2026-06-04
CCA4035 Air China 3 2026-06-22
CCA4338 - 2 2026-06-16
CCA4311 - 2 2026-06-21
CCA4281 Air China 2 2026-06-10
CCA4181 Air China 2 2026-05-30
CCA4118 - 2 2026-07-11
CCA4116 Air China 2 2026-05-20
CCA4110 - 2 2026-06-19
CCA2712 - 2 2026-07-07
CCA4335 - 1 2026-07-12
CCA4325 Air China 1 2026-04-13
CCA4323 - 1 2026-06-24
CCA4112 - 1 2026-07-14
CCA4036 Air China 1 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CCA4112 - Jul 14, 06:20 UTCJul 14, 06:45 UTC25m
2026-07-12 CCA4336 - Jul 12, 13:45 UTCJul 12, 14:01 UTC15m
2026-07-12 CCA4335 - Jul 12, 11:40 UTCJul 12, 11:50 UTC10m
2026-07-11 CCA4118 - Jul 11, 18:30 UTCJul 11, 18:45 UTC15m
2026-07-09 CCA2741 - Jul 9, 01:55 UTCJul 9, 05:40 UTC3h 45m
2026-07-07 CCA2712 - Jul 7, 11:10 UTCJul 7, 14:35 UTC3h 25m
2026-06-30 CCA2712 - Jun 30, 11:35 UTCJun 30, 15:10 UTC3h 35m
2026-06-28 CCA4326 - Jun 28, 05:15 UTCJun 28, 05:24 UTC10m
2026-06-24 CCA4324 - Jun 24, 12:40 UTCJun 24, 12:54 UTC15m
2026-06-24 CCA4323 - Jun 24, 10:45 UTCJun 24, 10:55 UTC10m
2026-06-24 CCA4326 - Jun 24, 05:05 UTCJun 24, 05:15 UTC10m
2026-06-23 CCA4326 - Jun 23, 05:09 UTCJun 23, 05:24 UTC15m
2026-06-22 CCA4036 SYX → CTU Jun 22, 04:54 UTCJun 22, 05:10 UTC15m
2026-06-22 CCA4035 CTU → SYX Jun 22, 01:49 UTCJun 22, 02:30 UTC40m
2026-06-21 CCA4312 - Jun 21, 11:05 UTCJun 21, 11:15 UTC10m
2026-06-21 CCA4311 - Jun 21, 08:54 UTCJun 21, 09:04 UTC10m
2026-06-20 CCA4324 - Jun 20, 12:50 UTCJun 20, 12:59 UTC10m
2026-06-19 CCA4110 - Jun 19, 11:45 UTCJun 19, 12:04 UTC20m
2026-06-17 CCA4312 - Jun 17, 11:50 UTCJun 17, 12:00 UTC10m
2026-06-16 CCA4312 - Jun 16, 13:55 UTCJun 16, 14:05 UTC10m
2026-06-16 CCA4311 - Jun 16, 12:05 UTCJun 16, 12:14 UTC10m
2026-06-16 CCA4338 - Jun 16, 04:15 UTCJun 16, 04:30 UTC15m
2026-06-13 CCA4326 SZX → CTU Jun 13, 05:00 UTCJun 13, 05:10 UTC10m
2026-06-12 CCA4035 CTU → SYX Jun 12, 02:05 UTCJun 12, 05:15 UTC3h 10m
2026-06-11 CCA4326 SZX → CTU Jun 11, 05:10 UTCJun 11, 05:25 UTC15m
2026-06-10 CCA4281 CTU → XMN Jun 10, 05:45 UTCJun 10, 11:20 UTC5h 35m
2026-06-10 CCA4035 CTU → SYX Jun 10, 01:55 UTCJun 10, 02:25 UTC30m
2026-06-09 CCA4336 SZX → CTU Jun 9, 13:50 UTCJun 9, 14:00 UTC10m
2026-06-07 CCA4312 SZX → CTU Jun 7, 13:40 UTCJun 7, 13:55 UTC15m
2026-06-06 CCA4326 SZX → CTU Jun 6, 07:55 UTCJun 6, 08:50 UTC55m
2026-06-05 CCA4324 SZX → CTU Jun 5, 13:25 UTCJun 5, 13:40 UTC15m
2026-06-04 CCA4102 PEK → CTU Jun 4, 05:25 UTCJun 4, 05:50 UTC25m
2026-05-30 CCA4182 PEK → CTU May 30, 23:15 UTCMay 30, 23:35 UTC20m
2026-05-30 CCA4181 CTU → PEK May 30, 12:10 UTCMay 30, 12:20 UTC10m
2026-05-29 CCA4312 SZX → CTU May 29, 11:25 UTCMay 29, 11:35 UTC10m
2026-05-29 CCA4338 SZX → CTU May 29, 03:25 UTCMay 29, 03:40 UTC15m
2026-05-28 CCA4118 PEK → CTU May 28, 14:10 UTCMay 28, 14:30 UTC20m
2026-05-28 CCA4326 SZX → CTU May 28, 05:15 UTCMay 28, 05:30 UTC15m
2026-05-27 CCA4336 SZX → CTU May 27, 13:40 UTCMay 27, 13:55 UTC15m
2026-05-26 CCA4312 SZX → CTU May 26, 11:05 UTCMay 26, 11:20 UTC15m
2026-05-20 CCA4116 PEK → CTU May 20, 07:30 UTCMay 20, 07:45 UTC15m
2026-05-19 CCA4182 PEK → CTU May 19, 23:20 UTCMay 19, 23:40 UTC20m
2026-05-14 CCA4336 SZX → CTU May 14, 16:10 UTCMay 14, 16:20 UTC10m
2026-05-12 CCA4312 SZX → CTU May 12, 11:00 UTCMay 12, 11:15 UTC15m
2026-05-12 - - May 12, 09:00 UTCMay 12, 09:10 UTC10m
2026-05-05 CCA4116 PEK → CTU May 5, 07:25 UTCMay 5, 07:40 UTC15m
2026-05-04 CCA4182 PEK → CTU May 4, 23:10 UTCMay 4, 23:30 UTC20m
2026-05-04 CCA4181 CTU → PEK May 4, 12:20 UTCMay 4, 12:30 UTC10m
2026-05-04 CCA4102 PEK → CTU May 4, 05:20 UTCMay 4, 05:35 UTC15m
2026-04-28 CCA4326 SZX → CTU Apr 28, 05:10 UTCApr 28, 05:20 UTC10m

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-327S page for operator, model, and routing details .

Mode-S 781CE3 frequently asked

What is Mode-S code 781CE3?
781CE3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-327S.
Where is Mode-S 781CE3 registered?
Mode-S code 781CE3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781CE3 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781CE3, octal 36016343, decimal 7,871,715.
What flights does 781CE3 operate?
Mode-S 781CE3 has broadcast 20 distinct callsigns, including CCA4326, CCA4312, CCA4336, CCA4324, CCA4182.