Apparatus

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sensors Mode-S transponder

780CB4

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1997 · BOEING 737-800

Hex
780CB4
Octal
36006264
Decimal
7,867,572
Country
CN
Tail
B-1997
Type
B738
No current signal · last broadcast 2d ago
Flights observed
77
Distinct callsigns
20
Country
CN
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 780CB4.

Country allocation

The ICAO 24-bit address 780CB4 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
CHH7322 - 7 2026-07-12
CHH7759 - 4 2026-06-25
CHH7760 - 2 2026-06-25
CHH7722 - 2 2026-07-06
CHH7671 - 2 2026-06-28
CHH7512 - 2 2026-06-22
CHH7272 Hainan Airlines 2 2026-06-03
CHH7116 - 2 2026-07-08
CHH7026 - 2 2026-07-07
CHH7982 - 1 2026-07-14
CHH7981 - 1 2026-07-14
CHH7883 - 1 2026-06-10
CHH7872 - 1 2026-06-21
CHH7825 Hainan Airlines 1 2026-06-13
CHH7809 Hainan Airlines 1 2026-06-09
CHH7752 Hainan Airlines 1 2026-04-20
CHH7746 - 1 2026-04-19
CHH7745 - 1 2026-04-19
CHH7741 Hainan Airlines 1 2026-05-01
CHH7737 - 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 CHH7528 - Jul 16, 07:00 UTCJul 16, 11:20 UTC4h 20m
2026-07-15 CHH7308 - Jul 15, 00:15 UTCJul 15, 00:25 UTC10m
2026-07-14 CHH7982 - Jul 14, 04:10 UTCJul 14, 05:30 UTC1h 20m
2026-07-14 CHH7981 - Jul 14, 00:40 UTCJul 14, 02:05 UTC1h 25m
2026-07-12 CHH7322 - Jul 12, 23:45 UTCJul 13, 10:25 UTC10h 40m
2026-07-12 CHH7322 - Jul 12, 05:05 UTCJul 13, 04:40 UTC23h 35m
2026-07-12 CHH7322 - Jul 12, 04:55 UTCJul 13, 00:55 UTC20h 0m
2026-07-11 CHH7321 - Jul 11, 12:35 UTCJul 12, 05:05 UTC16h 30m
2026-07-10 CHH7385 - Jul 10, 05:15 UTCJul 10, 10:15 UTC5h 0m
2026-07-09 CHH7688 - Jul 9, 11:35 UTCJul 10, 10:15 UTC22h 40m
2026-07-08 CHH7687 - Jul 8, 07:05 UTCJul 9, 01:20 UTC18h 15m
2026-07-08 CHH7116 - Jul 8, 06:45 UTCJul 9, 01:20 UTC18h 35m
2026-07-08 CHH7116 - Jul 8, 02:25 UTCJul 9, 00:15 UTC21h 50m
2026-07-07 CHH7026 - Jul 7, 18:00 UTCJul 7, 18:15 UTC15m
2026-07-07 CHH7731 - Jul 7, 03:00 UTCJul 7, 03:10 UTC10m
2026-07-06 CHH7256 - Jul 6, 21:10 UTCJul 6, 21:20 UTC10m
2026-07-06 CHH7255 - Jul 6, 13:15 UTCJul 6, 13:25 UTC10m
2026-07-06 CHH7722 - Jul 6, 10:25 UTCJul 6, 10:35 UTC10m
2026-07-06 CHH7721 - Jul 6, 02:50 UTCJul 6, 03:00 UTC10m
2026-07-05 CHH7023 - Jul 5, 23:25 UTCJul 5, 23:35 UTC10m
2026-07-05 CHH7052 - Jul 5, 01:20 UTCJul 5, 14:40 UTC13h 20m
2026-07-04 CHH7026 - Jul 4, 13:05 UTCJul 4, 13:20 UTC15m
2026-07-04 CHH7722 - Jul 4, 11:30 UTCJul 4, 11:40 UTC10m
2026-07-03 CHH7482 - Jul 3, 01:20 UTCJul 3, 08:35 UTC7h 15m
2026-07-02 CHH7435 - Jul 2, 09:25 UTCJul 2, 09:40 UTC15m
2026-07-02 CHH7147 - Jul 2, 00:05 UTCJul 2, 00:25 UTC20m
2026-07-01 CHH7347 - Jul 1, 06:55 UTCJul 1, 07:15 UTC20m
2026-06-30 CHH6213 - Jun 30, 22:50 UTCJun 30, 23:05 UTC15m
2026-06-29 CHH7672 - Jun 29, 15:39 UTCJun 29, 15:54 UTC15m
2026-06-28 CHH7671 - Jun 28, 15:05 UTCJun 29, 07:30 UTC16h 25m
2026-06-28 CHH7671 - Jun 28, 06:55 UTCJun 28, 07:20 UTC25m
2026-06-25 CHH7760 - Jun 25, 17:30 UTCJun 25, 17:44 UTC15m
2026-06-25 CHH7759 - Jun 25, 10:15 UTCJun 25, 14:55 UTC4h 40m
2026-06-25 CHH7759 - Jun 25, 07:49 UTCJun 25, 07:59 UTC10m
2026-06-24 CHH7737 - Jun 24, 22:55 UTCJun 24, 23:04 UTC10m
2026-06-24 CHH7760 - Jun 24, 16:40 UTCJun 24, 16:54 UTC15m
2026-06-24 CHH7759 - Jun 24, 09:59 UTCJun 24, 14:20 UTC4h 20m
2026-06-24 CHH7759 - Jun 24, 07:40 UTCJun 24, 07:50 UTC10m
2026-06-22 CHH7512 - Jun 22, 04:00 UTCJun 22, 04:09 UTC10m
2026-06-21 CHH7872 - Jun 21, 05:04 UTCJun 21, 05:20 UTC15m
2026-06-14 CHH7572 CKG → HAK Jun 14, 08:15 UTCJun 14, 12:10 UTC3h 55m
2026-06-13 CHH7825 URC → KCA Jun 13, 08:20 UTCJun 13, 08:30 UTC10m
2026-06-11 CHH7164 NKG → SZX Jun 11, 00:20 UTCJun 11, 05:30 UTC5h 10m
2026-06-10 CHH7109 PEK → JIQ Jun 10, 09:15 UTCJun 10, 09:30 UTC15m
2026-06-10 CHH7883 - Jun 10, 00:00 UTCJun 10, 00:20 UTC20m
2026-06-09 CHH7809 PEK → CAN Jun 9, 07:10 UTCJun 9, 07:25 UTC15m
2026-06-08 CHH7185 PEK → YIH Jun 8, 23:10 UTCJun 8, 23:30 UTC20m
2026-06-08 CHH7338 XIY → PEK Jun 8, 11:50 UTCJun 8, 12:15 UTC25m
2026-06-08 CHH7512 ZUH → XIY Jun 8, 04:35 UTCJun 8, 04:45 UTC10m
2026-06-06 CHH7322 PVG → SYX Jun 6, 23:55 UTCJun 7, 04:35 UTC4h 40m

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-1997 page for operator, model, and routing details .

Mode-S 780CB4 frequently asked

What is Mode-S code 780CB4?
780CB4 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1997.
Where is Mode-S 780CB4 registered?
Mode-S code 780CB4 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780CB4 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780CB4, octal 36006264, decimal 7,867,572.
What flights does 780CB4 operate?
Mode-S 780CB4 has broadcast 20 distinct callsigns, including CHH7322, CHH7759, CHH7760, CHH7722, CHH7671.