Apparatus

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sensors Mode-S transponder

780638

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1307 · BOEING 737-800

Hex
780638
Octal
36003070
Decimal
7,865,912
Country
CN
Tail
B-1307
Type
B738
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
162
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S 780638.

Country allocation

The ICAO 24-bit address 780638 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
CES741 China Eastern Airlines 29 2026-07-25
CES742 China Eastern Airlines 23 2026-07-25
CES555 China Eastern Airlines 20 2026-07-26
CES556 China Eastern Airlines 18 2026-07-26
CES5082 China Eastern Airlines 12 2026-07-20
CES5081 China Eastern Airlines 12 2026-07-19
CES9621 - 11 2026-07-12
CES2036 - 7 2026-07-13
CES2035 - 7 2026-07-13
CES9622 - 6 2026-06-23
CES9658 - 5 2026-06-26
CES9657 - 3 2026-06-26
CES5758 China Eastern Airlines 2 2026-07-19
CES9648 - 1 2026-07-08
CES5759 China Eastern Airlines 1 2026-05-27
CES5757 China Eastern Airlines 1 2026-05-14
CES5719 - 1 2026-06-28
CES5710 - 1 2026-06-29
CES5474 China Eastern Airlines 1 2026-06-23
CES5093 China Eastern Airlines 1 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CES556 CCU → KMG Jul 26, 19:20 UTCJul 26, 20:40 UTC1h 20m
2026-07-26 CES555 KMG → CCU Jul 26, 16:30 UTCJul 26, 18:00 UTC1h 30m
2026-07-25 CES742 BKK → KMG Jul 25, 09:20 UTCJul 25, 10:40 UTC1h 20m
2026-07-25 CES741 KMG → BKK Jul 25, 07:20 UTCJul 25, 07:55 UTC35m
2026-07-24 CES556 CCU → KMG Jul 24, 19:40 UTCJul 25, 06:35 UTC10h 55m
2026-07-24 CES555 KMG → CCU Jul 24, 16:50 UTCJul 24, 18:20 UTC1h 30m
2026-07-23 CES742 BKK → KMG Jul 23, 10:10 UTCJul 23, 11:35 UTC1h 25m
2026-07-23 CES741 KMG → BKK Jul 23, 06:10 UTCJul 23, 07:55 UTC1h 45m
2026-07-21 CES742 BKK → KMG Jul 21, 09:45 UTCJul 21, 11:15 UTC1h 30m
2026-07-20 CES741 KMG → BKK Jul 20, 14:50 UTCJul 21, 08:40 UTC17h 49m
2026-07-20 CES741 KMG → BKK Jul 20, 08:05 UTCJul 21, 07:40 UTC23h 34m
2026-07-20 CES5082 SIN → KMG Jul 20, 06:40 UTCJul 21, 04:45 UTC22h 4m
2026-07-20 CES5082 SIN → KMG Jul 20, 05:05 UTCJul 21, 00:40 UTC19h 34m
2026-07-19 CES5081 KMG → SIN Jul 19, 11:15 UTCJul 20, 03:10 UTC15h 55m
2026-07-19 CES5758 SZX → KMG Jul 19, 10:20 UTCJul 19, 10:40 UTC20m
2026-07-17 CES556 CCU → KMG Jul 17, 19:55 UTCJul 17, 21:20 UTC1h 25m
2026-07-17 CES555 KMG → CCU Jul 17, 17:05 UTCJul 17, 18:15 UTC1h 10m
2026-07-16 CES742 - Jul 16, 09:40 UTCJul 16, 11:05 UTC1h 25m
2026-07-16 CES741 - Jul 16, 03:05 UTCJul 16, 08:15 UTC5h 10m
2026-07-15 CES741 - Jul 15, 13:40 UTCJul 16, 08:15 UTC18h 35m
2026-07-15 CES741 - Jul 15, 08:05 UTCJul 16, 08:00 UTC23h 55m
2026-07-15 CES5082 - Jul 15, 06:50 UTCJul 16, 03:15 UTC20h 25m
2026-07-15 CES5082 - Jul 15, 05:15 UTCJul 16, 03:15 UTC22h 0m
2026-07-15 CES5081 - Jul 15, 00:00 UTCJul 15, 03:00 UTC3h 0m
2026-07-13 CES2036 - Jul 13, 08:20 UTCJul 13, 09:35 UTC1h 15m
2026-07-13 CES2035 - Jul 13, 01:05 UTCJul 13, 06:55 UTC5h 50m
2026-07-12 CES9621 - Jul 12, 13:45 UTCJul 12, 15:05 UTC1h 20m
2026-07-10 CES556 - Jul 10, 19:35 UTCJul 10, 21:00 UTC1h 25m
2026-07-10 CES742 - Jul 10, 09:20 UTCJul 10, 18:05 UTC8h 45m
2026-07-10 CES741 - Jul 10, 06:15 UTCJul 10, 07:40 UTC1h 25m
2026-07-09 CES741 - Jul 9, 10:05 UTCJul 10, 07:40 UTC21h 35m
2026-07-09 CES742 - Jul 9, 09:10 UTCJul 10, 07:40 UTC22h 30m
2026-07-09 CES741 - Jul 9, 07:20 UTCJul 9, 07:50 UTC30m
2026-07-08 CES9648 - Jul 8, 18:50 UTCJul 9, 06:30 UTC11h 40m
2026-07-08 CES5082 - Jul 8, 05:05 UTCJul 8, 17:15 UTC12h 10m
2026-07-08 CES5081 - Jul 8, 00:15 UTCJul 8, 03:25 UTC3h 10m
2026-07-06 CES556 - Jul 6, 19:40 UTCJul 6, 21:05 UTC1h 25m
2026-07-06 CES555 - Jul 6, 16:50 UTCJul 6, 18:15 UTC1h 25m
2026-07-05 CES742 - Jul 5, 09:20 UTCJul 5, 10:40 UTC1h 20m
2026-07-05 CES741 - Jul 5, 00:35 UTCJul 5, 07:45 UTC7h 10m
2026-07-04 CES741 - Jul 4, 09:15 UTCJul 5, 07:45 UTC22h 30m
2026-07-03 CES556 - Jul 3, 20:35 UTCJul 3, 21:50 UTC1h 15m
2026-07-03 CES555 - Jul 3, 17:55 UTCJul 3, 19:20 UTC1h 25m
2026-07-02 CES742 - Jul 2, 09:25 UTCJul 2, 10:50 UTC1h 25m
2026-07-02 CES741 - Jul 2, 00:40 UTCJul 2, 07:55 UTC7h 15m
2026-06-29 CES5710 - Jun 29, 10:24 UTCJun 29, 10:34 UTC10m
2026-06-28 CES5719 - Jun 28, 14:59 UTCJun 28, 16:05 UTC1h 5m
2026-06-28 CES2036 - Jun 28, 08:50 UTCJun 28, 10:10 UTC1h 20m
2026-06-28 CES2035 - Jun 28, 00:59 UTCJun 28, 06:40 UTC5h 40m
2026-06-27 CES9621 - Jun 27, 13:55 UTCJun 27, 15:19 UTC1h 25m

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-1307 page for operator, model, and routing details .

Mode-S 780638 frequently asked

What is Mode-S code 780638?
780638 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1307.
Where is Mode-S 780638 registered?
Mode-S code 780638 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780638 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780638, octal 36003070, decimal 7,865,912.
What flights does 780638 operate?
Mode-S 780638 has broadcast 20 distinct callsigns, including CES741, CES742, CES555, CES556, CES5082.