Apparatus

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sensors Mode-S transponder

780459

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-7399 · BOEING 737-800

Hex
780459
Octal
36002131
Decimal
7,865,433
Country
CN
Tail
B-7399
Type
B738
No current signal · last broadcast 1d ago
Flights observed
59
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 780459.

Country allocation

The ICAO 24-bit address 780459 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
CHH7776 Hainan Airlines 2 2026-06-10
CHH7752 Hainan Airlines 2 2026-05-06
CHH7751 Hainan Airlines 2 2026-05-05
CHH7746 - 2 2026-05-03
CHH7745 - 2 2026-05-03
CHH7735 Hainan Airlines 2 2026-05-07
CHH7713 Hainan Airlines 2 2026-06-08
CHH7398 Hainan Airlines 2 2026-05-04
CHH7310 Hainan Airlines 2 2026-05-26
CHH7238 Hainan Airlines 2 2026-05-20
CHH7237 Hainan Airlines 2 2026-05-20
CHH7235 Hainan Airlines 2 2026-06-05
CHH7197 Hainan Airlines 2 2026-06-05
CHH7156 Hainan Airlines 2 2026-05-04
CHH7889 Hainan Airlines 1 2026-05-27
CHH7883 - 1 2026-05-22
CHH7870 Hainan Airlines 1 2026-06-14
CHH7775 Hainan Airlines 1 2026-05-05
CHH7774 Hainan Airlines 1 2026-05-01
CHH7773 Hainan Airlines 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-14 CHH6205 SZX → PVG Jun 14, 09:30 UTCJun 14, 09:40 UTC10m
2026-06-14 CHH7870 SZX → XIY Jun 14, 01:20 UTCJun 14, 01:35 UTC15m
2026-06-13 CHH7722 PVG → SZX Jun 13, 09:55 UTCJun 13, 10:10 UTC15m
2026-06-11 CHH7771 - Jun 11, 08:25 UTCJun 11, 08:35 UTC10m
2026-06-10 CHH7776 TYN → SZX Jun 10, 16:50 UTCJun 10, 17:05 UTC15m
2026-06-08 CHH7713 PEK → SZX Jun 8, 18:40 UTCJun 8, 18:55 UTC15m
2026-06-08 CHH7713 PEK → SZX Jun 8, 16:05 UTCJun 8, 16:25 UTC20m
2026-06-08 CHH7179 PEK → SYX Jun 8, 01:45 UTCJun 8, 08:10 UTC6h 25m
2026-06-07 CHH7447 PEK → TFU Jun 7, 08:10 UTCJun 7, 08:40 UTC30m
2026-06-06 CHH7135 PEK → CSX Jun 6, 23:24 UTCJun 6, 23:39 UTC15m
2026-06-06 CHH7298 TYN → CAN Jun 6, 13:54 UTCJun 6, 14:14 UTC20m
2026-06-05 CHH7197 PEK → LHW Jun 5, 23:15 UTCJun 5, 23:40 UTC25m
2026-06-05 CHH7235 CAN → CGO Jun 5, 03:00 UTCJun 5, 03:20 UTC20m
2026-06-04 CHH6218 XIY → PEK Jun 4, 12:35 UTCJun 4, 13:00 UTC25m
2026-06-04 CHH6217 PEK → XIY Jun 4, 08:35 UTCJun 4, 09:00 UTC25m
2026-05-31 CHH7042 HGH → HAK May 31, 13:40 UTCMay 31, 14:00 UTC20m
2026-05-29 CHH7235 CAN → CGO May 29, 03:10 UTCMay 29, 03:30 UTC20m
2026-05-28 CHH7674 - May 28, 14:05 UTCMay 28, 14:25 UTC20m
2026-05-28 CHH7673 - May 28, 09:25 UTCMay 28, 09:40 UTC15m
2026-05-27 CHH7889 PEK → YZY May 27, 08:30 UTCMay 27, 08:40 UTC10m
2026-05-26 CHH7310 CAN → SYX May 26, 15:14 UTCMay 26, 15:35 UTC20m
2026-05-22 CHH7883 - May 22, 00:05 UTCMay 22, 00:25 UTC20m
2026-05-21 CHH7279 PEK → SYX May 21, 06:05 UTCMay 21, 06:20 UTC15m
2026-05-20 CHH7547 PEK → TFU May 20, 12:30 UTCMay 20, 12:40 UTC10m
2026-05-20 CHH7238 XIY → PEK May 20, 07:45 UTCMay 20, 08:10 UTC25m
2026-05-20 CHH7237 PEK → XIY May 20, 03:10 UTCMay 20, 03:25 UTC15m
2026-05-18 CHH7648 SHE → HAK May 18, 07:50 UTCMay 18, 11:50 UTC4h 0m
2026-05-17 CHH7698 NKG → SYX May 17, 05:00 UTCMay 17, 05:15 UTC15m
2026-05-14 CHH7374 HFE → SYX May 14, 02:15 UTCMay 14, 14:05 UTC11h 50m
2026-05-13 CHH7310 CAN → SYX May 13, 15:20 UTCMay 13, 15:35 UTC15m
2026-05-09 CHH7197 PEK → LHW May 9, 23:09 UTCMay 9, 23:35 UTC25m
2026-05-09 CHH7645 - May 9, 11:10 UTCMay 9, 11:20 UTC10m
2026-05-09 CHH7238 XIY → PEK May 9, 08:05 UTCMay 9, 08:15 UTC10m
2026-05-09 CHH7237 PEK → XIY May 9, 03:15 UTCMay 9, 03:40 UTC25m
2026-05-08 CHH7736 CGO → SZX May 8, 04:25 UTCMay 8, 04:34 UTC10m
2026-05-07 CHH7735 SZX → CGO May 7, 22:25 UTCMay 7, 22:35 UTC10m
2026-05-07 CHH7732 SZX → SYX May 7, 16:00 UTCMay 7, 16:25 UTC25m
2026-05-06 CHH7731 SYX → SZX May 6, 23:45 UTCMay 6, 23:55 UTC10m
2026-05-06 CHH7730 RIZ → SZX May 6, 16:25 UTCMay 6, 16:40 UTC15m
2026-05-06 CHH7729 SZX → SHE May 6, 06:00 UTCMay 6, 06:10 UTC10m
2026-05-06 CHH7752 CTU → SZX May 6, 04:15 UTCMay 6, 04:25 UTC10m
2026-05-05 CHH7751 SZX → CTU May 5, 23:15 UTCMay 5, 23:25 UTC10m
2026-05-05 CHH7776 - May 5, 16:35 UTCMay 5, 16:50 UTC15m
2026-05-05 CHH7775 SZX → TYN May 5, 05:45 UTCMay 5, 06:00 UTC15m
2026-05-04 CHH7735 SZX → CGO May 4, 22:40 UTCMay 4, 22:50 UTC10m
2026-05-04 CHH7748 TYN → SZX May 4, 16:40 UTCMay 4, 16:55 UTC15m
2026-05-04 CHH7156 NKG → SZX May 4, 07:20 UTCMay 4, 07:40 UTC20m
2026-05-04 CHH7398 HGH → SZX May 4, 00:25 UTCMay 4, 00:40 UTC15m
2026-05-03 CHH7746 - May 3, 08:35 UTCMay 3, 09:00 UTC25m
2026-05-03 CHH7745 - May 3, 02:20 UTCMay 3, 02:40 UTC20m

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-7399 page for operator, model, and routing details .

Mode-S 780459 frequently asked

What is Mode-S code 780459?
780459 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-7399.
Where is Mode-S 780459 registered?
Mode-S code 780459 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780459 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780459, octal 36002131, decimal 7,865,433.
What flights does 780459 operate?
Mode-S 780459 has broadcast 20 distinct callsigns, including CHH7776, CHH7752, CHH7751, CHH7746, CHH7745.