Apparatus

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sensors Mode-S transponder

780DD0

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1503 · BOEING 737-800

Hex
780DD0
Octal
36006720
Decimal
7,867,856
Country
CN
Tail
B-1503
Type
B738
No current signal · last broadcast 4h ago
Flights observed
129
Distinct callsigns
20
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 780DD0.

Country allocation

The ICAO 24-bit address 780DD0 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
CHH7374 Hainan Airlines 31 2026-06-30
CHH7373 Hainan Airlines 17 2026-05-16
CHH7312 - 10 2026-07-16
CHH7749 - 9 2026-07-14
CHH7562 Hainan Airlines 9 2026-07-17
CHH7750 - 8 2026-07-15
CHH7744 - 6 2026-07-15
CHH7743 Hainan Airlines 4 2026-07-09
CHH7388 Hainan Airlines 4 2026-06-13
CHH7870 - 2 2026-07-06
CHH7697 - 2 2026-07-03
CHH7668 Hainan Airlines 2 2026-04-24
CHH7316 - 2 2026-06-19
CHH7256 - 2 2026-07-09
CHH7255 - 2 2026-07-09
CHH7735 Hainan Airlines 1 2026-05-31
CHH7722 - 1 2026-07-09
CHH7721 - 1 2026-07-09
CHH7698 - 1 2026-07-04
CHH7561 Hainan Airlines 1 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CHH7562 CGO → SYX Jul 17, 14:00 UTCJul 18, 02:29 UTC12h 30m
2026-07-16 CHH7312 - Jul 16, 02:25 UTCJul 16, 12:55 UTC10h 30m
2026-07-15 CHH7750 - Jul 15, 16:45 UTCJul 15, 17:00 UTC15m
2026-07-15 CHH7744 - Jul 15, 14:00 UTCJul 15, 14:20 UTC20m
2026-07-14 CHH7749 - Jul 14, 16:05 UTCJul 14, 16:25 UTC20m
2026-07-14 CHH7312 - Jul 14, 12:05 UTCJul 14, 12:15 UTC10m
2026-07-13 CHH7750 - Jul 13, 15:25 UTCJul 13, 15:35 UTC10m
2026-07-11 CHH7749 - Jul 11, 16:25 UTCJul 11, 16:50 UTC25m
2026-07-11 CHH7311 - Jul 11, 01:55 UTCJul 11, 12:10 UTC10h 15m
2026-07-10 CHH7310 - Jul 10, 15:40 UTCJul 10, 15:50 UTC10m
2026-07-09 CHH7743 NGB → CGQ Jul 9, 23:50 UTCJul 10, 00:00 UTC10m
2026-07-09 CHH7256 - Jul 9, 17:35 UTCJul 9, 18:05 UTC30m
2026-07-09 CHH7255 - Jul 9, 11:55 UTCJul 9, 12:10 UTC15m
2026-07-09 CHH7722 - Jul 9, 02:50 UTCJul 9, 09:55 UTC7h 5m
2026-07-09 CHH7721 - Jul 9, 01:35 UTCJul 9, 01:45 UTC10m
2026-07-08 CHH7023 - Jul 8, 23:25 UTCJul 8, 23:45 UTC20m
2026-07-06 CHH7166 - Jul 6, 07:25 UTCJul 6, 07:35 UTC10m
2026-07-06 CHH7870 - Jul 6, 00:00 UTCJul 6, 00:15 UTC15m
2026-07-05 CHH7749 - Jul 5, 18:40 UTCJul 5, 18:55 UTC15m
2026-07-05 CHH7312 - Jul 5, 01:40 UTCJul 5, 11:55 UTC10h 15m
2026-07-04 CHH7698 - Jul 4, 05:20 UTCJul 5, 01:40 UTC20h 20m
2026-07-03 CHH7697 - Jul 3, 08:50 UTCJul 4, 05:35 UTC20h 45m
2026-07-02 CHH7750 - Jul 2, 15:25 UTCJul 2, 15:35 UTC10m
2026-07-02 CHH7744 - Jul 2, 13:35 UTCJul 2, 14:00 UTC25m
2026-07-01 CHH7743 NGB → CGQ Jul 1, 23:00 UTCJul 1, 23:10 UTC10m
2026-07-01 CHH7749 - Jul 1, 17:45 UTCJul 1, 17:55 UTC10m
2026-07-01 CHH7312 - Jul 1, 01:35 UTCJul 1, 14:15 UTC12h 40m
2026-06-30 CHH7374 HFE → SYX Jun 30, 13:40 UTCJul 1, 01:50 UTC12h 10m
2026-06-30 CHH7374 HFE → SYX Jun 30, 02:20 UTCJul 1, 01:50 UTC23h 30m
2026-06-28 CHH7374 HFE → SYX Jun 28, 13:49 UTCJun 28, 14:25 UTC35m
2026-06-27 CHH6031 SYX → ZUH Jun 27, 08:10 UTCJun 27, 08:29 UTC20m
2026-06-26 CHH7374 HFE → SYX Jun 26, 02:40 UTCJun 26, 14:09 UTC11h 30m
2026-06-25 CHH7374 HFE → SYX Jun 25, 13:35 UTCJun 26, 02:40 UTC13h 5m
2026-06-25 CHH7374 HFE → SYX Jun 25, 02:14 UTCJun 25, 13:45 UTC11h 30m
2026-06-24 CHH7312 - Jun 24, 11:45 UTCJun 25, 02:30 UTC14h 45m
2026-06-24 CHH7312 - Jun 24, 01:30 UTCJun 24, 12:25 UTC10h 55m
2026-06-23 CHH7750 - Jun 23, 15:15 UTCJun 23, 15:30 UTC15m
2026-06-22 CHH6206 PVG → SZX Jun 22, 16:40 UTCJun 22, 17:04 UTC25m
2026-06-22 CHH6205 - Jun 22, 10:30 UTCJun 22, 10:40 UTC10m
2026-06-20 CHH7870 - Jun 20, 23:55 UTCJun 21, 00:04 UTC10m
2026-06-20 CHH7749 SYX → SZX Jun 20, 16:19 UTCJun 20, 16:34 UTC15m
2026-06-19 CHH7316 - Jun 19, 23:49 UTCJun 20, 13:09 UTC13h 20m
2026-06-19 CHH7316 - Jun 19, 14:24 UTCJun 20, 07:04 UTC16h 40m
2026-06-18 CHH7750 - Jun 18, 20:00 UTCJun 18, 20:10 UTC10m
2026-06-18 CHH7744 - Jun 18, 17:55 UTCJun 18, 18:25 UTC30m
2026-06-17 CHH7749 SYX → SZX Jun 17, 18:10 UTCJun 17, 18:20 UTC10m
2026-06-17 CHH7312 - Jun 17, 01:55 UTCJun 17, 12:35 UTC10h 40m
2026-06-15 CHH7312 KHN → SYX Jun 15, 12:25 UTCJun 15, 13:00 UTC35m
2026-06-14 CHH7562 CGO → SYX Jun 14, 02:35 UTCJun 14, 14:40 UTC12h 5m
2026-06-13 CHH7388 KHN → SYX Jun 13, 15:00 UTCJun 14, 02:50 UTC11h 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-1503 page for operator, model, and routing details .

Mode-S 780DD0 frequently asked

What is Mode-S code 780DD0?
780DD0 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1503.
Where is Mode-S 780DD0 registered?
Mode-S code 780DD0 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780DD0 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780DD0, octal 36006720, decimal 7,867,856.
What flights does 780DD0 operate?
Mode-S 780DD0 has broadcast 20 distinct callsigns, including CHH7374, CHH7373, CHH7312, CHH7749, CHH7562.