Apparatus

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sensors Mode-S transponder

780821

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5627 · BOEING 737-800

Hex
780821
Octal
36004041
Decimal
7,866,401
Country
CN
Tail
B-5627
Type
B738
No current signal · last broadcast Jul 26, 15:10 UTC
Flights observed
79
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 15:10 UTC

Last known position

Most recent position reported by Mode-S 780821.

Country allocation

The ICAO 24-bit address 780821 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
CDG8014 Shandong Airlines 7 2026-07-25
CDG8013 Shandong Airlines 7 2026-07-26
CDG8004 Shandong Airlines 7 2026-07-26
CDG8003 Shandong Airlines 7 2026-07-25
CDG4092 - 3 2026-07-03
CDG4642 Shandong Airlines 2 2026-05-01
CDG4091 - 2 2026-07-02
CDG2122 Shandong Airlines 2 2026-05-07
CDG1198 - 2 2026-07-15
CDG1196 Shandong Airlines 2 2026-05-23
CDG1158 - 2 2026-07-21
CDG8813 - 1 2026-07-14
CDG8407 Shandong Airlines 1 2026-05-04
CDG8002 - 1 2026-06-17
CDG8001 - 1 2026-06-17
CDG7606 Shandong Airlines 1 2026-05-07
CDG4998 Shandong Airlines 1 2026-07-24
CDG4997 Shandong Airlines 1 2026-07-24
CDG4912 Shandong Airlines 1 2026-04-25
CDG4911 Shandong Airlines 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CDG8004 ICN → TNA Jul 26, 14:50 UTCJul 26, 15:10 UTC20m
2026-07-26 CDG8013 SYX → TNA Jul 26, 13:05 UTCJul 26, 13:30 UTC25m
2026-07-25 CDG8014 ICN → TNA Jul 25, 23:50 UTCJul 26, 06:00 UTC6h 10m
2026-07-25 CDG8003 TNA → ICN Jul 25, 14:15 UTCJul 25, 14:45 UTC30m
2026-07-25 CDG4681 TAO → SZX Jul 25, 00:35 UTCJul 25, 01:15 UTC40m
2026-07-24 CDG4998 HET → TAO Jul 24, 03:45 UTCJul 24, 04:05 UTC20m
2026-07-24 CDG4997 TAO → HET Jul 24, 00:35 UTCJul 24, 01:05 UTC30m
2026-07-22 CDG1192 ZUH → TNA Jul 22, 00:45 UTCJul 22, 01:00 UTC15m
2026-07-21 CDG1155 PEK → ZUH Jul 21, 13:20 UTCJul 21, 13:50 UTC30m
2026-07-21 CDG1158 - Jul 21, 07:50 UTCJul 21, 08:00 UTC10m
2026-07-21 CDG1157 - Jul 21, 03:15 UTCJul 21, 03:35 UTC20m
2026-07-15 CDG1198 - Jul 15, 14:05 UTCJul 15, 15:10 UTC1h 5m
2026-07-14 CDG8813 - Jul 14, 08:30 UTCJul 14, 08:40 UTC10m
2026-07-11 CDG1188 - Jul 11, 07:35 UTCJul 11, 07:45 UTC10m
2026-07-10 CDG8004 - Jul 10, 15:45 UTCJul 10, 16:10 UTC25m
2026-07-10 CDG8013 - Jul 10, 14:10 UTCJul 10, 14:35 UTC25m
2026-07-09 CDG8014 - Jul 9, 23:50 UTCJul 10, 00:05 UTC15m
2026-07-09 CDG8003 - Jul 9, 14:05 UTCJul 9, 14:25 UTC20m
2026-07-03 CDG4092 - Jul 3, 04:00 UTCJul 3, 05:40 UTC1h 40m
2026-07-02 CDG4091 ICN → KIX Jul 2, 14:10 UTCJul 3, 02:20 UTC12h 10m
2026-07-02 CDG4619 - Jul 2, 12:45 UTCJul 2, 13:15 UTC30m
2026-07-02 CDG4883 - Jul 2, 04:00 UTCJul 2, 04:10 UTC10m
2026-07-01 CDG4092 - Jul 1, 04:30 UTCJul 2, 04:10 UTC23h 40m
2026-07-01 CDG4092 - Jul 1, 03:40 UTCJul 1, 05:20 UTC1h 40m
2026-07-01 CDG4091 - Jul 1, 00:40 UTCJul 1, 02:10 UTC1h 30m
2026-06-30 CDG4618 - Jun 30, 13:00 UTCJun 30, 13:25 UTC25m
2026-06-30 CDG4617 - Jun 30, 11:15 UTCJun 30, 11:40 UTC25m
2026-06-30 CDG4616 - Jun 30, 08:10 UTCJun 30, 08:25 UTC15m
2026-06-30 CDG4615 - Jun 30, 06:35 UTCJun 30, 07:00 UTC25m
2026-06-26 CDG4086 - Jun 26, 11:20 UTCJun 26, 11:34 UTC15m
2026-06-26 CDG4085 - Jun 26, 09:55 UTCJun 26, 10:15 UTC20m
2026-06-17 CDG1198 - Jun 17, 12:35 UTCJun 17, 12:45 UTC10m
2026-06-17 CDG1197 - Jun 17, 10:10 UTCJun 17, 10:20 UTC10m
2026-06-17 CDG8002 - Jun 17, 03:35 UTCJun 17, 03:50 UTC15m
2026-06-17 CDG8001 - Jun 17, 00:50 UTCJun 17, 01:15 UTC25m
2026-06-11 CDG8004 ICN → TNA Jun 11, 15:00 UTCJun 11, 15:20 UTC20m
2026-06-11 CDG8013 SYX → TNA Jun 11, 13:35 UTCJun 11, 14:00 UTC25m
2026-06-11 CDG8014 ICN → TNA Jun 11, 00:05 UTCJun 11, 09:05 UTC9h 0m
2026-06-10 CDG8003 TNA → ICN Jun 10, 13:45 UTCJun 10, 14:05 UTC20m
2026-06-09 CDG8004 ICN → TNA Jun 9, 14:40 UTCJun 9, 15:10 UTC30m
2026-06-09 CDG8013 SYX → TNA Jun 9, 13:25 UTCJun 9, 13:45 UTC20m
2026-06-08 CDG8014 ICN → TNA Jun 8, 23:40 UTCJun 9, 09:20 UTC9h 40m
2026-06-08 CDG8003 TNA → ICN Jun 8, 13:50 UTCJun 8, 14:05 UTC15m
2026-06-07 CDG8004 ICN → TNA Jun 7, 14:40 UTCJun 7, 15:05 UTC25m
2026-06-07 CDG8013 SYX → TNA Jun 7, 13:05 UTCJun 7, 13:25 UTC20m
2026-06-06 CDG8014 ICN → TNA Jun 6, 23:39 UTCJun 7, 08:35 UTC8h 55m
2026-06-06 CDG8003 TNA → ICN Jun 6, 13:44 UTCJun 6, 14:04 UTC20m
2026-06-05 CDG8004 ICN → TNA Jun 5, 15:25 UTCJun 5, 15:45 UTC20m
2026-06-05 CDG8013 SYX → TNA Jun 5, 13:30 UTCJun 5, 13:50 UTC20m
2026-06-04 CDG8014 ICN → TNA Jun 4, 23:50 UTCJun 5, 09:40 UTC9h 50m

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-5627 page for operator, model, and routing details .

Mode-S 780821 frequently asked

What is Mode-S code 780821?
780821 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5627.
Where is Mode-S 780821 registered?
Mode-S code 780821 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780821 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780821, octal 36004041, decimal 7,866,401.
What flights does 780821 operate?
Mode-S 780821 has broadcast 20 distinct callsigns, including CDG8014, CDG8013, CDG8004, CDG8003, CDG4092.