Apparatus

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sensors Mode-S transponder

780CB3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1996 · BOEING 737-800

Hex
780CB3
Octal
36006263
Decimal
7,867,571
Country
CN
Tail
B-1996
Type
B738
No current signal · last broadcast Jul 24, 12:35 UTC
Flights observed
76
Distinct callsigns
20
Country
CN
Last broadcast
Jul 24, 12:35 UTC

Last known position

Most recent position reported by Mode-S 780CB3.

Country allocation

The ICAO 24-bit address 780CB3 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
CHH7512 - 3 2026-07-12
CHH7722 - 2 2026-07-08
CHH7721 - 2 2026-07-08
CHH7653 - 2 2026-06-22
CHH7272 Hainan Airlines 2 2026-06-20
CHH720 - 2 2026-07-23
CHH719 Hainan Airlines 2 2026-07-23
CHH706 Hainan Airlines 2 2026-07-23
CHH705 Hainan Airlines 2 2026-07-23
CHH7048 - 2 2026-07-24
CHH7026 Hainan Airlines 2 2026-04-27
CHH7023 - 2 2026-07-07
CHH7982 - 1 2026-07-07
CHH7981 - 1 2026-07-07
CHH7883 - 1 2026-06-26
CHH7872 Hainan Airlines 1 2026-04-13
CHH7851 Hainan Airlines 1 2026-04-24
CHH7834 Hainan Airlines 1 2026-06-10
CHH7833 Hainan Airlines 1 2026-06-10
CHH7811 - 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CHH7048 - Jul 24, 12:00 UTCJul 24, 12:35 UTC35m
2026-07-24 CHH7048 - Jul 24, 00:45 UTCJul 24, 09:45 UTC9h 0m
2026-07-23 CHH720 - Jul 23, 08:20 UTCJul 23, 08:35 UTC15m
2026-07-23 CHH719 HAK → HKG Jul 23, 06:25 UTCJul 23, 06:40 UTC15m
2026-07-23 CHH706 HKG → HAK Jul 23, 02:35 UTCJul 23, 02:50 UTC15m
2026-07-23 CHH705 HAK → HKG Jul 23, 00:30 UTCJul 23, 00:35 UTC5m
2026-07-22 CHH706 HKG → HAK Jul 22, 02:35 UTCJul 22, 02:50 UTC15m
2026-07-22 CHH705 HAK → HKG Jul 22, 00:25 UTCJul 22, 00:30 UTC5m
2026-07-21 CHH7131 CAN → SHA Jul 21, 00:50 UTCJul 21, 14:35 UTC13h 45m
2026-07-18 CHH7742 - Jul 18, 01:54 UTCJul 18, 02:05 UTC10m
2026-07-17 CHH7741 - Jul 17, 04:25 UTCJul 17, 04:35 UTC10m
2026-07-14 CHH6217 - Jul 14, 07:50 UTCJul 14, 08:10 UTC20m
2026-07-14 CHH7138 - Jul 14, 03:30 UTCJul 14, 04:05 UTC35m
2026-07-12 CHH7522 - Jul 12, 12:40 UTCJul 12, 12:50 UTC10m
2026-07-12 CHH7512 - Jul 12, 03:50 UTCJul 12, 04:01 UTC10m
2026-07-09 CHH7337 - Jul 9, 14:20 UTCJul 9, 14:45 UTC25m
2026-07-08 CHH7702 - Jul 8, 23:35 UTCJul 8, 23:45 UTC10m
2026-07-08 CHH7773 - Jul 8, 12:05 UTCJul 8, 12:15 UTC10m
2026-07-08 CHH7722 - Jul 8, 09:10 UTCJul 8, 09:55 UTC45m
2026-07-08 CHH7721 - Jul 8, 01:35 UTCJul 8, 01:45 UTC10m
2026-07-07 CHH7023 - Jul 7, 23:25 UTCJul 7, 23:40 UTC15m
2026-07-07 CHH7982 - Jul 7, 04:15 UTCJul 7, 05:15 UTC1h 0m
2026-07-07 CHH7981 - Jul 7, 01:00 UTCJul 7, 02:35 UTC1h 35m
2026-07-04 CHH7120 - Jul 4, 12:05 UTCJul 4, 12:15 UTC10m
2026-07-01 CHH7209 - Jul 1, 04:20 UTCJul 1, 11:50 UTC7h 30m
2026-06-30 CHH7312 - Jun 30, 15:10 UTCJul 1, 11:50 UTC20h 40m
2026-06-30 CHH7745 - Jun 30, 03:35 UTCJun 30, 03:45 UTC10m
2026-06-29 CHH7557 - Jun 29, 14:50 UTCJun 29, 15:00 UTC10m
2026-06-29 CHH7275 - Jun 29, 06:34 UTCJun 29, 06:44 UTC10m
2026-06-29 CHH7762 - Jun 29, 04:25 UTCJun 29, 04:45 UTC20m
2026-06-27 CHH7137 - Jun 27, 22:55 UTCJun 27, 23:14 UTC20m
2026-06-27 CHH7267 - Jun 27, 10:19 UTCJun 27, 10:29 UTC10m
2026-06-27 CHH7190 KWE → PEK Jun 27, 07:30 UTCJun 27, 07:39 UTC10m
2026-06-27 CHH7189 - Jun 27, 00:34 UTCJun 27, 00:50 UTC15m
2026-06-26 CHH7491 - Jun 26, 08:54 UTCJun 26, 09:05 UTC10m
2026-06-26 CHH7883 - Jun 26, 00:05 UTCJun 26, 00:20 UTC15m
2026-06-25 CHH7247 - Jun 25, 06:35 UTCJun 25, 06:50 UTC15m
2026-06-24 CHH7811 - Jun 24, 09:00 UTCJun 24, 09:19 UTC20m
2026-06-24 CHH7167 - Jun 24, 00:20 UTCJun 24, 00:40 UTC20m
2026-06-23 CHH7163 - Jun 23, 08:20 UTCJun 23, 08:39 UTC20m
2026-06-22 CHH7654 - Jun 22, 15:10 UTCJun 22, 15:35 UTC25m
2026-06-22 CHH7653 - Jun 22, 12:15 UTCJun 22, 12:25 UTC10m
2026-06-22 CHH7086 TFU → HAK Jun 22, 09:30 UTCJun 22, 09:45 UTC15m
2026-06-21 CHH7320 - Jun 21, 09:59 UTCJun 22, 02:25 UTC16h 25m
2026-06-20 CHH7688 - Jun 20, 23:45 UTCJun 21, 13:50 UTC14h 5m
2026-06-20 CHH7272 KWE → CAN Jun 20, 14:44 UTCJun 21, 12:44 UTC22h 0m
2026-06-20 CHH7272 KWE → CAN Jun 20, 04:29 UTCJun 20, 14:54 UTC10h 25m
2026-06-19 CHH7271 CAN → KWE Jun 19, 15:14 UTCJun 20, 14:44 UTC23h 30m
2026-06-19 CHH7370 - Jun 19, 03:39 UTCJun 19, 15:14 UTC11h 35m
2026-06-18 CHH7653 - Jun 18, 12:45 UTCJun 19, 03:49 UTC15h 4m

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-1996 page for operator, model, and routing details .

Mode-S 780CB3 frequently asked

What is Mode-S code 780CB3?
780CB3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1996.
Where is Mode-S 780CB3 registered?
Mode-S code 780CB3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780CB3 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 12:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780CB3, octal 36006263, decimal 7,867,571.
What flights does 780CB3 operate?
Mode-S 780CB3 has broadcast 20 distinct callsigns, including CHH7512, CHH7722, CHH7721, CHH7653, CHH7272.