Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

780D12

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1728 · BOEING 737-800

Hex
780D12
Octal
36006422
Decimal
7,867,666
Country
CN
Tail
B-1728
Type
B738
No current signal · last broadcast 19h ago
Flights observed
64
Distinct callsigns
20
Country
CN
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 780D12.

Country allocation

The ICAO 24-bit address 780D12 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
CHH7116 Hainan Airlines 5 2026-05-27
CHH7120 Hainan Airlines 3 2026-07-17
CHH7078 Hainan Airlines 3 2026-05-25
CHH7077 Hainan Airlines 3 2026-05-26
CHH7016 Hainan Airlines 3 2026-04-20
CHH7741 - 2 2026-07-09
CHH7648 - 2 2026-07-13
CHH720 Hainan Airlines 2 2026-06-02
CHH719 Hainan Airlines 2 2026-06-02
CHH7015 Hainan Airlines 2 2026-04-16
CHH439 - 2 2026-06-30
CHH7883 - 1 2026-07-01
CHH7815 Hainan Airlines 1 2026-05-09
CHH7742 - 1 2026-07-08
CHH7698 Hainan Airlines 1 2026-04-23
CHH7672 - 1 2026-05-01
CHH7671 - 1 2026-05-01
CHH7654 Hainan Airlines 1 2026-05-17
CHH7653 Hainan Airlines 1 2026-05-17
CHH7647 Hainan Airlines 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CHH7120 PVG → HAK Jul 17, 10:30 UTCJul 17, 10:44 UTC15m
2026-07-15 CHH7369 - Jul 15, 00:30 UTCJul 15, 05:00 UTC4h 30m
2026-07-13 CHH7648 - Jul 13, 03:01 UTCJul 13, 11:30 UTC8h 30m
2026-07-12 CHH7648 - Jul 12, 12:35 UTCJul 13, 11:30 UTC22h 55m
2026-07-11 CHH7282 - Jul 11, 18:45 UTCJul 12, 12:40 UTC17h 55m
2026-07-10 CHH7289 - Jul 10, 23:50 UTCJul 11, 00:05 UTC15m
2026-07-09 CHH7741 - Jul 9, 03:10 UTCJul 9, 03:20 UTC10m
2026-07-08 CHH7741 - Jul 8, 05:55 UTCJul 8, 06:10 UTC15m
2026-07-08 CHH7742 - Jul 8, 02:20 UTCJul 8, 02:40 UTC20m
2026-07-03 CHH7535 - Jul 3, 15:35 UTCJul 3, 15:55 UTC20m
2026-07-01 CHH7337 - Jul 1, 14:20 UTCJul 1, 14:50 UTC30m
2026-07-01 CHH7883 - Jul 1, 00:10 UTCJul 1, 00:30 UTC20m
2026-06-30 CHH440 - Jun 30, 05:55 UTCJun 30, 08:10 UTC2h 15m
2026-06-30 CHH439 - Jun 30, 02:35 UTCJun 30, 04:30 UTC1h 55m
2026-06-30 CHH439 - Jun 30, 01:35 UTCJun 30, 01:50 UTC15m
2026-06-28 CHH7038 - Jun 28, 14:09 UTCJun 28, 14:30 UTC20m
2026-06-27 CHH7166 XIY → HAK Jun 27, 01:00 UTCJun 27, 14:09 UTC13h 10m
2026-06-26 CHH7049 HAK → KWE Jun 26, 05:19 UTCJun 26, 15:39 UTC10h 20m
2026-06-25 CHH7120 - Jun 25, 11:19 UTCJun 26, 05:35 UTC18h 15m
2026-06-25 CHH7054 - Jun 25, 02:45 UTCJun 25, 11:35 UTC8h 50m
2026-06-13 CHH7187 PEK → WUH Jun 13, 00:30 UTCJun 13, 05:50 UTC5h 19m
2026-06-12 CHH7381 HAK → PEK Jun 12, 14:20 UTCJun 12, 14:35 UTC15m
2026-06-12 CHH7572 CKG → HAK Jun 12, 08:25 UTCJun 12, 08:35 UTC10m
2026-06-03 CHH7571 HAK → CKG Jun 3, 11:50 UTCJun 3, 12:00 UTC10m
2026-06-02 CHH720 HKG → HAK Jun 2, 08:25 UTCJun 2, 08:40 UTC15m
2026-06-02 CHH719 HAK → HKG Jun 2, 06:15 UTCJun 2, 06:35 UTC20m
2026-06-01 CHH7040 KWE → HAK Jun 1, 11:10 UTCJun 1, 11:20 UTC10m
2026-05-31 CHH7120 PVG → HAK May 31, 10:05 UTCMay 31, 10:20 UTC15m
2026-05-30 CHH7265 HAK → XIY May 30, 05:25 UTCMay 30, 05:35 UTC10m
2026-05-29 CHH720 HKG → HAK May 29, 08:10 UTCMay 29, 08:25 UTC15m
2026-05-29 CHH719 HAK → HKG May 29, 06:25 UTCMay 29, 06:40 UTC15m
2026-05-29 CHH706 HKG → HAK May 29, 02:15 UTCMay 29, 02:30 UTC15m
2026-05-29 CHH705 HAK → HKG May 29, 00:25 UTCMay 29, 00:45 UTC20m
2026-05-27 CHH7320 PVG → HAK May 27, 12:40 UTCMay 28, 04:05 UTC15h 25m
2026-05-27 CHH7116 NKG → HAK May 27, 06:55 UTCMay 28, 04:05 UTC21h 10m
2026-05-27 CHH7116 NKG → HAK May 27, 01:44 UTCMay 27, 13:20 UTC11h 36m
2026-05-26 CHH7116 NKG → HAK May 26, 10:34 UTCMay 27, 07:10 UTC20h 35m
2026-05-26 CHH7077 HAK → KHN May 26, 06:34 UTCMay 27, 01:54 UTC19h 20m
2026-05-26 CHH7077 HAK → KHN May 26, 03:35 UTCMay 27, 01:54 UTC22h 20m
2026-05-25 CHH7077 HAK → KHN May 25, 12:35 UTCMay 26, 10:34 UTC22h 0m
2026-05-25 CHH7078 KHN → HAK May 25, 09:45 UTCMay 26, 06:49 UTC21h 4m
2026-05-25 CHH7078 KHN → HAK May 25, 06:50 UTCMay 26, 03:45 UTC20h 54m
2026-05-25 CHH7078 KHN → HAK May 25, 03:45 UTCMay 25, 12:45 UTC9h 0m
2026-05-17 CHH7654 JUH → TYN May 17, 14:45 UTCMay 17, 15:35 UTC50m
2026-05-17 CHH7653 TYN → KWE May 17, 12:20 UTCMay 17, 12:35 UTC15m
2026-05-09 CHH7815 PEK → CAN May 9, 12:45 UTCMay 9, 12:55 UTC10m
2026-05-08 CHH7328 CTU → SZX May 8, 00:54 UTCMay 8, 15:10 UTC14h 15m
2026-05-04 CHH7547 PEK → TFU May 4, 12:25 UTCMay 4, 12:40 UTC15m
2026-05-04 CHH7236 CSX → PEK May 4, 09:35 UTCMay 4, 09:45 UTC10m
2026-05-04 CHH7235 CAN → CGO May 4, 03:00 UTCMay 4, 03:15 UTC15m

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-1728 page for operator, model, and routing details .

Mode-S 780D12 frequently asked

What is Mode-S code 780D12?
780D12 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1728.
Where is Mode-S 780D12 registered?
Mode-S code 780D12 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780D12 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780D12, octal 36006422, decimal 7,867,666.
What flights does 780D12 operate?
Mode-S 780D12 has broadcast 20 distinct callsigns, including CHH7116, CHH7120, CHH7078, CHH7077, CHH7016.