Apparatus

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sensors Mode-S transponder

780DD7

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1796 · BOEING 737-800

Hex
780DD7
Octal
36006727
Decimal
7,867,863
Country
CN
Tail
B-1796
Type
B738
No current signal · last broadcast 13h ago
Flights observed
113
Distinct callsigns
20
Country
CN
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 780DD7.

Country allocation

The ICAO 24-bit address 780DD7 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
CHH460 - 8 2026-07-10
CHH459 - 8 2026-07-09
CHH7298 - 7 2026-07-17
CHH7384 Hainan Airlines 6 2026-05-08
CHH7528 Hainan Airlines 4 2026-05-28
CHH7322 Hainan Airlines 4 2026-05-22
CHH7297 - 4 2026-06-26
CHH7672 - 3 2026-07-07
CHH7306 Hainan Airlines 3 2026-05-09
CHH7987 - 2 2026-06-24
CHH7883 - 2 2026-06-05
CHH7777 Hainan Airlines 2 2026-04-30
CHH7726 Hainan Airlines 2 2026-05-24
CHH7725 Hainan Airlines 2 2026-05-24
CHH7716 - 2 2026-06-29
CHH7671 - 2 2026-07-05
CHH7498 - 2 2026-07-14
CHH7337 - 2 2026-07-18
CHH7189 Hainan Airlines 2 2026-05-01
CHH7138 Hainan Airlines 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CHH7337 - Jul 18, 14:25 UTCJul 18, 14:40 UTC15m
2026-07-18 CHH7187 - Jul 18, 00:39 UTCJul 18, 01:00 UTC20m
2026-07-17 CHH7298 - Jul 17, 13:50 UTCJul 17, 14:04 UTC15m
2026-07-14 CHH7498 - Jul 14, 09:40 UTCJul 14, 10:00 UTC20m
2026-07-11 CHH6233 - Jul 11, 05:25 UTCJul 11, 08:50 UTC3h 25m
2026-07-10 CHH460 - Jul 10, 08:55 UTCJul 11, 05:35 UTC20h 40m
2026-07-09 CHH459 - Jul 9, 13:10 UTCJul 10, 07:05 UTC17h 55m
2026-07-08 CHH7238 - Jul 8, 14:15 UTCJul 9, 08:05 UTC17h 50m
2026-07-07 CHH7672 - Jul 7, 14:55 UTCJul 7, 15:20 UTC25m
2026-07-05 CHH7672 - Jul 5, 22:00 UTCJul 5, 22:20 UTC20m
2026-07-05 CHH7671 - Jul 5, 06:55 UTCJul 5, 07:20 UTC25m
2026-07-04 CHH7672 - Jul 4, 15:45 UTCJul 4, 16:00 UTC15m
2026-07-04 CHH7671 - Jul 4, 06:45 UTCJul 4, 07:15 UTC30m
2026-07-03 CHH7805 - Jul 3, 02:45 UTCJul 3, 03:00 UTC15m
2026-07-02 CHH7298 - Jul 2, 14:05 UTCJul 2, 14:25 UTC20m
2026-07-01 CHH6234 - Jul 1, 08:50 UTCJul 1, 09:00 UTC10m
2026-06-30 CHH7079 - Jun 30, 00:39 UTCJun 30, 09:05 UTC8h 26m
2026-06-29 CHH7716 - Jun 29, 16:04 UTCJun 29, 16:15 UTC10m
2026-06-29 CHH7716 - Jun 29, 13:30 UTCJun 29, 13:39 UTC10m
2026-06-29 CHH7709 - Jun 29, 07:50 UTCJun 29, 08:09 UTC20m
2026-06-29 CHH7601 - Jun 29, 00:00 UTCJun 29, 00:10 UTC10m
2026-06-28 CHH7298 - Jun 28, 14:04 UTCJun 28, 14:25 UTC20m
2026-06-27 CHH7498 - Jun 27, 09:19 UTCJun 27, 09:44 UTC25m
2026-06-26 CHH7297 - Jun 26, 12:34 UTCJun 26, 12:59 UTC25m
2026-06-25 CHH405 PEK → VVO Jun 25, 23:19 UTCJun 25, 23:30 UTC10m
2026-06-25 CHH7298 - Jun 25, 13:50 UTCJun 25, 14:09 UTC20m
2026-06-24 CHH7297 - Jun 24, 12:54 UTCJun 24, 13:14 UTC20m
2026-06-24 CHH7988 - Jun 24, 05:24 UTCJun 24, 05:54 UTC30m
2026-06-24 CHH7987 - Jun 24, 02:09 UTCJun 24, 02:45 UTC35m
2026-06-24 CHH7987 - Jun 24, 00:05 UTCJun 24, 00:15 UTC10m
2026-06-23 CHH7298 - Jun 23, 13:55 UTCJun 23, 14:15 UTC20m
2026-06-22 CHH460 - Jun 22, 14:14 UTCJun 22, 14:24 UTC10m
2026-06-22 CHH460 - Jun 22, 08:50 UTCJun 22, 09:19 UTC30m
2026-06-22 CHH459 - Jun 22, 04:24 UTCJun 22, 06:49 UTC2h 25m
2026-06-21 CHH459 - Jun 21, 14:15 UTCJun 22, 01:35 UTC11h 20m
2026-06-21 CHH460 - Jun 21, 08:40 UTCJun 21, 11:24 UTC2h 45m
2026-06-21 CHH459 - Jun 21, 06:24 UTCJun 21, 06:35 UTC10m
2026-06-21 CHH459 - Jun 21, 01:05 UTCJun 21, 01:19 UTC15m
2026-06-19 CHH460 - Jun 19, 14:04 UTCJun 19, 14:15 UTC10m
2026-06-19 CHH460 - Jun 19, 08:40 UTCJun 19, 11:30 UTC2h 50m
2026-06-19 CHH459 - Jun 19, 06:24 UTCJun 19, 06:35 UTC10m
2026-06-19 CHH459 - Jun 19, 01:24 UTCJun 19, 01:34 UTC10m
2026-06-17 CHH7179 PEK → SYX Jun 17, 04:20 UTCJun 17, 07:50 UTC3h 30m
2026-06-13 CHH462 VTE → HAK Jun 13, 11:45 UTCJun 13, 15:40 UTC3h 55m
2026-06-12 CHH7420 LNL → HAK Jun 12, 23:10 UTCJun 13, 08:40 UTC9h 29m
2026-06-12 CHH7648 SHE → HAK Jun 12, 03:15 UTCJun 12, 14:10 UTC10h 55m
2026-06-09 CHH7582 PEK → HAK Jun 9, 09:40 UTCJun 10, 00:05 UTC14h 25m
2026-06-08 CHH7613 PEK → PVG Jun 8, 23:35 UTCJun 8, 23:45 UTC10m
2026-06-08 CHH7298 TYN → CAN Jun 8, 13:50 UTCJun 8, 14:10 UTC20m
2026-06-07 CHH460 SIN → HAK Jun 7, 08:40 UTCJun 7, 14:15 UTC5h 35m

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-1796 page for operator, model, and routing details .

Mode-S 780DD7 frequently asked

What is Mode-S code 780DD7?
780DD7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1796.
Where is Mode-S 780DD7 registered?
Mode-S code 780DD7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780DD7 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780DD7, octal 36006727, decimal 7,867,863.
What flights does 780DD7 operate?
Mode-S 780DD7 has broadcast 20 distinct callsigns, including CHH460, CHH459, CHH7298, CHH7384, CHH7528.