Apparatus

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sensors Mode-S transponder

781045

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1537 · BOEING 737-800

Hex
781045
Octal
36010105
Decimal
7,868,485
Country
CN
Tail
B-1537
Type
B738
Broadcasting now · 250 ft
Flights observed
43
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 06:45 UTC

Current position

781045 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781045 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
CES6327 - 7 2026-06-15
CES2565 - 4 2026-07-10
CES5076 - 3 2026-07-19
CES2478 - 3 2026-07-16
CES6328 - 2 2026-06-15
CES5290 - 2 2026-07-19
CES5289 - 2 2026-07-19
CES5075 - 2 2026-07-18
CES2577 China Eastern Airlines 2 2026-05-10
CES2566 - 2 2026-07-10
CES2477 - 2 2026-07-16
CES7435 - 1 2026-07-14
CES6558 - 1 2026-07-19
CES6332 China Eastern Airlines 1 2026-04-30
CES6331 China Eastern Airlines 1 2026-04-30
CES6319 - 1 2026-06-14
CES5692 China Eastern Airlines 1 2026-07-17
CES2647 China Eastern Airlines 1 2026-05-31
CES2578 China Eastern Airlines 1 2026-05-10
CES2557 China Eastern Airlines 1 2026-04-23

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES2466 - Jul 26, 06:30 UTCJul 26, 06:45 UTC16m
2026-07-22 CES2545 - Jul 22, 02:30 UTCJul 22, 05:25 UTC2h 55m
2026-07-21 CES2546 - Jul 21, 05:40 UTCJul 22, 02:45 UTC21h 5m
2026-07-19 CES6558 - Jul 19, 17:50 UTCJul 19, 18:20 UTC30m
2026-07-19 CES5290 - Jul 19, 09:20 UTCJul 19, 09:30 UTC10m
2026-07-19 CES5289 - Jul 19, 06:15 UTCJul 19, 07:40 UTC1h 25m
2026-07-19 CES5076 - Jul 19, 00:00 UTCJul 19, 00:10 UTC10m
2026-07-18 CES5075 - Jul 18, 21:35 UTCJul 18, 21:45 UTC10m
2026-07-17 CES5692 SHE → PVG Jul 17, 05:04 UTCJul 17, 05:45 UTC40m
2026-07-16 CES5076 - Jul 16, 19:30 UTCJul 16, 19:45 UTC15m
2026-07-16 CES2478 - Jul 16, 03:30 UTCJul 16, 03:40 UTC10m
2026-07-16 CES2477 - Jul 16, 02:00 UTCJul 16, 02:10 UTC10m
2026-07-14 CES7435 - Jul 14, 12:00 UTCJul 14, 12:15 UTC15m
2026-07-10 CES2566 - Jul 10, 20:35 UTCJul 10, 23:35 UTC3h 0m
2026-07-10 CES2565 - Jul 10, 18:45 UTCJul 10, 19:00 UTC15m
2026-07-10 CES2565 - Jul 10, 16:10 UTCJul 10, 16:30 UTC20m
2026-06-16 CES5076 HAN → PVG Jun 16, 19:35 UTCJun 16, 19:55 UTC21m
2026-06-16 CES5075 PVG → HAN Jun 16, 08:39 UTCJun 16, 17:49 UTC9h 10m
2026-06-15 CES6328 - Jun 15, 05:45 UTCJun 15, 06:04 UTC20m
2026-06-15 CES6327 - Jun 15, 02:04 UTCJun 15, 02:20 UTC15m
2026-06-14 CES6327 - Jun 14, 03:35 UTCJun 15, 02:20 UTC22h 45m
2026-06-14 CES6319 - Jun 14, 00:15 UTCJun 14, 03:45 UTC3h 30m
2026-06-12 CES6327 PVG → ZHA Jun 12, 02:40 UTCJun 12, 03:00 UTC20m
2026-06-10 CES6327 PVG → ZHA Jun 10, 03:25 UTCJun 10, 03:40 UTC15m
2026-06-09 CES6327 PVG → ZHA Jun 9, 05:35 UTCJun 10, 03:40 UTC22h 5m
2026-06-08 CES6328 ZHA → PVG Jun 8, 04:50 UTCJun 8, 06:05 UTC1h 15m
2026-06-08 CES6327 PVG → ZHA Jun 8, 01:45 UTCJun 8, 02:05 UTC20m
2026-06-06 CES2478 SZX → WUH Jun 6, 05:50 UTCJun 6, 06:05 UTC15m
2026-06-06 CES2477 WUH → SZX Jun 6, 02:00 UTCJun 6, 02:15 UTC15m
2026-06-04 CES6327 PVG → ZHA Jun 4, 01:40 UTCJun 4, 04:55 UTC3h 15m
2026-05-31 CES2647 WUH → BAR May 31, 09:50 UTCMay 31, 10:05 UTC15m
2026-05-26 CES5290 ZUH → PVG May 26, 08:10 UTCMay 26, 08:19 UTC10m
2026-05-26 CES5289 PVG → ZUH May 26, 05:30 UTCMay 26, 06:59 UTC1h 30m
2026-05-25 CES2478 SZX → WUH May 25, 03:10 UTCMay 25, 03:20 UTC10m
2026-05-10 CES2578 SZX → WUH May 10, 07:45 UTCMay 10, 11:05 UTC3h 20m
2026-05-10 CES2577 WUH → SIN May 10, 02:14 UTCMay 10, 05:30 UTC3h 15m
2026-04-30 CES6332 ZHA → PVG Apr 30, 11:00 UTCApr 30, 11:10 UTC10m
2026-04-30 CES6331 PVG → ZHA Apr 30, 08:45 UTCApr 30, 09:05 UTC20m
2026-04-23 CES2557 WUH → SZX Apr 23, 15:35 UTCApr 23, 15:55 UTC20m
2026-04-19 CES2566 KUL → WUH Apr 19, 20:30 UTCApr 19, 21:55 UTC1h 25m
2026-04-19 CES2565 WUH → KUL Apr 19, 18:40 UTCApr 19, 19:00 UTC20m
2026-04-19 CES2565 WUH → KUL Apr 19, 08:40 UTCApr 19, 17:50 UTC9h 10m
2026-04-19 CES2577 WUH → SIN Apr 19, 02:25 UTCApr 19, 05:55 UTC3h 30m

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-1537 page for operator, model, and routing details .

Mode-S 781045 frequently asked

What is Mode-S code 781045?
781045 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1537.
Where is Mode-S 781045 registered?
Mode-S code 781045 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781045 broadcasting right now?
Yes. Mode-S 781045 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781045, octal 36010105, decimal 7,868,485.
What flights does 781045 operate?
Mode-S 781045 has broadcast 20 distinct callsigns, including CES6327, CES2565, CES5076, CES2478, CES6328.