sensors Mode-S transponder

781B3E

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-322L · AIRBUS A-321neo

Hex
781B3E
Octal
36015476
Decimal
7,871,294
Country
CN
Tail
B-322L
Type
A21N
No current signal · last broadcast 16h ago
Flights observed
73
Distinct callsigns
20
Country
CN
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 781B3E.

Country allocation

The ICAO 24-bit address 781B3E 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
CBJ5195 - 10 2026-07-08
CBJ5217 - 8 2026-05-20
CBJ5136 - 7 2026-07-06
CBJ5768 - 5 2026-06-07
CBJ5218 - 5 2026-05-21
CBJ5146 - 5 2026-07-11
CBJ5196 - 4 2026-06-05
CBJ5126 - 4 2026-07-16
CBJ5290 - 2 2026-06-19
CBJ5289 - 2 2026-06-19
CBJ5220 - 2 2026-04-30
CBJ5219 - 2 2026-04-30
CBJ5135 - 2 2026-07-01
CBJ5125 - 2 2026-07-01
CBJ5114 - 2 2026-06-28
CBJ5921 - 1 2026-05-17
CBJ5776 - 1 2026-07-01
CBJ5765 - 1 2026-07-12
CBJ5532 - 1 2026-05-26
CBJ5347 - 1 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CBJ5264 - Jul 17, 08:59 UTCJul 17, 13:40 UTC4h 40m
2026-07-16 CBJ5126 - Jul 16, 12:55 UTCJul 17, 08:59 UTC20h 5m
2026-07-16 CBJ5126 - Jul 16, 08:40 UTCJul 16, 13:10 UTC4h 30m
2026-07-15 CBJ5126 - Jul 15, 12:35 UTCJul 16, 08:40 UTC20h 5m
2026-07-14 CBJ5126 - Jul 14, 07:45 UTCJul 14, 13:30 UTC5h 45m
2026-07-12 CBJ5765 - Jul 12, 04:20 UTCJul 12, 04:35 UTC15m
2026-07-11 CBJ5146 - Jul 11, 08:10 UTCJul 12, 04:35 UTC20h 25m
2026-07-08 CBJ5195 - Jul 8, 08:05 UTCJul 8, 16:15 UTC8h 10m
2026-07-07 CBJ5146 - Jul 7, 09:05 UTCJul 8, 01:50 UTC16h 45m
2026-07-07 CBJ5146 - Jul 7, 02:00 UTCJul 7, 16:25 UTC14h 25m
2026-07-06 CBJ5146 - Jul 6, 16:10 UTCJul 7, 09:20 UTC17h 10m
2026-07-06 CBJ5146 - Jul 6, 11:10 UTCJul 7, 09:20 UTC22h 10m
2026-07-06 CBJ5136 - Jul 6, 06:25 UTCJul 7, 02:10 UTC19h 45m
2026-07-04 CBJ514T - Jul 4, 02:15 UTCJul 4, 02:35 UTC20m
2026-07-02 CBJ5136 - Jul 2, 08:35 UTCJul 3, 02:40 UTC18h 5m
2026-07-02 CBJ5136 - Jul 2, 02:25 UTCJul 2, 17:00 UTC14h 35m
2026-07-01 CBJ5135 - Jul 1, 13:45 UTCJul 2, 12:10 UTC22h 25m
2026-07-01 CBJ5125 - Jul 1, 08:35 UTCJul 2, 02:40 UTC18h 5m
2026-07-01 CBJ5776 - Jul 1, 05:15 UTCJul 1, 05:50 UTC35m
2026-06-29 CBJ5195 - Jun 29, 07:30 UTCJun 29, 23:39 UTC16h 10m
2026-06-29 CBJ5195 - Jun 29, 04:55 UTCJun 29, 23:39 UTC18h 45m
2026-06-28 CBJ5114 - Jun 28, 05:49 UTCJun 28, 06:00 UTC10m
2026-06-28 CBJ5113 - Jun 28, 02:10 UTCJun 28, 03:05 UTC55m
2026-06-19 CBJ5290 - Jun 19, 15:09 UTCJun 19, 15:19 UTC10m
2026-06-19 CBJ5289 - Jun 19, 12:54 UTCJun 19, 13:14 UTC20m
2026-06-19 - - Jun 19, 07:14 UTCJun 19, 07:45 UTC30m
2026-06-09 CBJ5135 - Jun 9, 11:30 UTCJun 9, 11:40 UTC10m
2026-06-07 CBJ5195 - Jun 7, 13:35 UTCJun 8, 08:25 UTC18h 50m
2026-06-07 CBJ5195 - Jun 7, 13:25 UTCJun 8, 08:25 UTC19h 0m
2026-06-07 CBJ5768 - Jun 7, 04:55 UTCJun 7, 14:05 UTC9h 10m
2026-06-06 CBJ5195 - Jun 6, 07:20 UTCJun 6, 16:04 UTC8h 45m
2026-06-05 CBJ5196 - Jun 5, 13:30 UTCJun 6, 05:30 UTC16h 0m
2026-06-04 CBJ5195 - Jun 4, 16:00 UTCJun 5, 08:00 UTC16h 0m
2026-06-04 CBJ5768 - Jun 4, 01:10 UTCJun 4, 16:00 UTC14h 50m
2026-06-03 CBJ5136 - Jun 3, 11:30 UTCJun 4, 05:00 UTC17h 30m
2026-06-03 CBJ5768 - Jun 3, 04:55 UTCJun 4, 01:10 UTC20h 15m
2026-06-02 CBJ5136 - Jun 2, 11:30 UTCJun 2, 16:10 UTC4h 40m
2026-06-01 CBJ5196 - Jun 1, 08:15 UTCJun 1, 16:10 UTC7h 55m
2026-06-01 CBJ5768 - Jun 1, 01:20 UTCJun 1, 05:25 UTC4h 5m
2026-05-31 CBJ5196 - May 31, 15:45 UTCMay 31, 16:05 UTC20m
2026-05-30 CBJ5195 - May 30, 05:10 UTCMay 30, 16:00 UTC10h 50m
2026-05-29 CBJ5195 - May 29, 16:00 UTCMay 30, 08:25 UTC16h 25m
2026-05-29 CBJ5195 - May 29, 08:40 UTCMay 30, 05:10 UTC20h 30m
2026-05-28 CBJ5768 - May 28, 01:10 UTCMay 28, 16:10 UTC15h 0m
2026-05-27 CBJ5196 - May 27, 15:40 UTCMay 27, 16:00 UTC20m
2026-05-26 CBJ5532 - May 26, 11:20 UTCMay 26, 11:30 UTC10m
2026-05-25 CBJ5036 - May 25, 02:35 UTCMay 25, 02:55 UTC20m
2026-05-21 CBJ5218 - May 21, 08:15 UTCMay 21, 08:25 UTC10m
2026-05-20 CBJ5217 - May 20, 23:35 UTCMay 20, 23:55 UTC20m
2026-05-19 CBJ5217 - May 19, 23:40 UTCMay 20, 08:00 UTC8h 21m

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-322L page for operator, model, and routing details .

Mode-S 781B3E frequently asked

What is Mode-S code 781B3E?
781B3E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322L.
Where is Mode-S 781B3E registered?
Mode-S code 781B3E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B3E broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B3E, octal 36015476, decimal 7,871,294.
What flights does 781B3E operate?
Mode-S 781B3E has broadcast 20 distinct callsigns, including CBJ5195, CBJ5217, CBJ5136, CBJ5768, CBJ5218.