Apparatus

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sensors Mode-S transponder

781B3B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-322Q · AIRBUS A-320neo

Hex
781B3B
Octal
36015473
Decimal
7,871,291
Country
CN
Tail
B-322Q
Type
A20N
Broadcasting now · callsign CES5652 · 35,150 ft
Flights observed
85
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

Current position

781B3B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781B3B 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
CES5373 - 7 2026-06-17
CES725 China Eastern Airlines 5 2026-06-12
CES760 - 4 2026-07-03
CES6050 China Eastern Airlines 4 2026-06-13
CES891 China Eastern Airlines 3 2026-07-23
CES726 China Eastern Airlines 3 2026-06-12
CES6049 China Eastern Airlines 3 2026-06-08
CES5644 - 3 2026-07-02
CES509 China Eastern Airlines 3 2026-06-06
CES892 China Eastern Airlines 2 2026-07-23
CES759 China Eastern Airlines 2 2026-05-06
CES7368 - 2 2026-07-15
CES7367 - 2 2026-07-15
CES7255 - 2 2026-07-16
CES6664 China Eastern Airlines 2 2026-07-22
CES5067 China Eastern Airlines 2 2026-06-12
CES5054 - 2 2026-07-15
CES5053 - 2 2026-07-15
CES5023 China Eastern Airlines 2 2026-05-26
CES284 China Eastern Airlines 2 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 CES892 ICN → YNJ Jul 23, 07:00 UTCJul 23, 07:35 UTC35m
2026-07-23 CES891 YNJ → ICN Jul 23, 05:05 UTCJul 23, 05:45 UTC40m
2026-07-22 CES6664 SZX → PKX Jul 22, 12:25 UTCJul 22, 17:25 UTC5h 0m
2026-07-20 CES284 VTE → PVG Jul 20, 09:50 UTCJul 20, 19:20 UTC9h 30m
2026-07-19 CES6273 YNT → MDG Jul 19, 23:20 UTCJul 19, 23:30 UTC10m
2026-07-19 CES5661 - Jul 19, 14:25 UTCJul 19, 14:35 UTC10m
2026-07-19 CES5604 SHE → PVG Jul 19, 08:20 UTCJul 19, 09:10 UTC50m
2026-07-18 CES5652 - Jul 18, 11:10 UTCJul 19, 09:10 UTC22h 0m
2026-07-18 CES892 - Jul 18, 06:55 UTCJul 18, 12:35 UTC5h 40m
2026-07-18 CES891 YNJ → ICN Jul 18, 04:50 UTCJul 18, 05:30 UTC40m
2026-07-16 CES7256 - Jul 16, 22:40 UTCJul 16, 22:55 UTC15m
2026-07-16 CES7255 - Jul 16, 16:19 UTCJul 16, 17:20 UTC1h 0m
2026-07-15 CES7255 - Jul 15, 18:50 UTCJul 16, 17:20 UTC22h 30m
2026-07-15 CES7368 - Jul 15, 17:35 UTCJul 16, 16:44 UTC23h 10m
2026-07-15 CES7367 - Jul 15, 14:55 UTCJul 15, 16:10 UTC1h 15m
2026-07-15 CES5054 - Jul 15, 03:20 UTCJul 15, 03:35 UTC15m
2026-07-15 CES5053 - Jul 15, 01:30 UTCJul 15, 01:50 UTC20m
2026-07-13 CES6292 - Jul 13, 01:10 UTCJul 13, 10:25 UTC9h 15m
2026-07-12 CES204 - Jul 12, 07:10 UTCJul 12, 07:31 UTC20m
2026-07-12 CES203 - Jul 12, 04:55 UTCJul 12, 05:30 UTC35m
2026-07-10 CES6664 - Jul 10, 12:05 UTCJul 10, 16:50 UTC4h 45m
2026-07-06 CES284 - Jul 6, 15:50 UTCJul 6, 19:15 UTC3h 25m
2026-07-03 CES760 - Jul 3, 17:00 UTCJul 3, 23:50 UTC6h 50m
2026-07-02 CES5644 - Jul 2, 06:51 UTCJul 2, 07:25 UTC34m
2026-07-01 CES5100 PEK → PVG Jul 1, 23:20 UTCJul 1, 23:35 UTC15m
2026-06-27 CES7368 - Jun 27, 17:39 UTCJun 27, 19:05 UTC1h 25m
2026-06-27 CES7367 - Jun 27, 00:44 UTCJun 27, 16:20 UTC15h 35m
2026-06-21 CES5096 - Jun 21, 08:20 UTCJun 21, 12:19 UTC4h 0m
2026-06-21 CES5095 - Jun 21, 02:10 UTCJun 21, 05:59 UTC3h 50m
2026-06-19 CES283 PVG → VTE Jun 19, 15:44 UTCJun 19, 19:14 UTC3h 30m
2026-06-17 CES5373 - Jun 17, 02:35 UTCJun 17, 08:35 UTC6h 0m
2026-06-16 CES5373 - Jun 16, 12:10 UTCJun 17, 08:35 UTC20h 26m
2026-06-16 CES5373 - Jun 16, 08:49 UTCJun 17, 08:35 UTC23h 46m
2026-06-16 CES5054 - Jun 16, 03:04 UTCJun 17, 02:45 UTC23h 41m
2026-06-16 CES5053 - Jun 16, 01:10 UTCJun 16, 01:55 UTC45m
2026-06-15 CES283 PVG → VTE Jun 15, 15:40 UTCJun 15, 19:14 UTC3h 35m
2026-06-13 CES5373 TYN → WUH Jun 13, 14:20 UTCJun 14, 08:20 UTC18h 0m
2026-06-13 CES6050 SIN → PVG Jun 13, 10:55 UTCJun 14, 08:20 UTC21h 25m
2026-06-12 CES726 HKG → PVG Jun 12, 23:40 UTCJun 13, 08:15 UTC8h 34m
2026-06-12 CES725 PVG → HKG Jun 12, 15:10 UTCJun 12, 15:30 UTC20m
2026-06-12 CES725 PVG → HKG Jun 12, 08:15 UTCJun 12, 14:40 UTC6h 25m
2026-06-12 CES5067 TYN → BKK Jun 12, 06:15 UTCJun 12, 06:40 UTC25m
2026-06-11 CES5158 PEK → PVG Jun 11, 06:55 UTCJun 11, 07:10 UTC15m
2026-06-10 CES5373 TYN → WUH Jun 10, 02:35 UTCJun 10, 07:30 UTC4h 55m
2026-06-09 CES5373 TYN → WUH Jun 9, 11:20 UTCJun 10, 07:30 UTC20h 10m
2026-06-09 CES5373 TYN → WUH Jun 9, 06:55 UTCJun 10, 03:55 UTC21h 0m
2026-06-09 CES891 YNJ → ICN Jun 9, 05:05 UTCJun 9, 05:30 UTC25m
2026-06-08 CES6050 SIN → PVG Jun 8, 11:05 UTCJun 8, 11:25 UTC20m
2026-06-08 CES6049 PVG → SIN Jun 8, 05:15 UTCJun 8, 09:20 UTC4h 5m
2026-06-07 CES726 HKG → PVG Jun 7, 23:50 UTCJun 8, 00:05 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-322Q page for operator, model, and routing details .

Mode-S 781B3B frequently asked

What is Mode-S code 781B3B?
781B3B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322Q.
Where is Mode-S 781B3B registered?
Mode-S code 781B3B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B3B broadcasting right now?
Yes. Mode-S 781B3B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B3B, octal 36015473, decimal 7,871,291.
What flights does 781B3B operate?
Mode-S 781B3B has broadcast 20 distinct callsigns, including CES5373, CES725, CES760, CES6050, CES891.