Apparatus

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sensors Mode-S transponder

7812ED

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1387 · BOEING 737 MAX 8

Hex
7812ED
Octal
36011355
Decimal
7,869,165
Country
CN
Tail
B-1387
Type
B38M
No current signal · last broadcast 49m ago
Flights observed
138
Distinct callsigns
20
Country
CN
Last broadcast
49m ago

Last known position

Most recent position reported by Mode-S 7812ED.

Country allocation

The ICAO 24-bit address 7812ED 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
CHH7522 - 26 2026-06-26
CHH7923 - 13 2026-06-17
CHH7924 - 11 2026-06-17
CHH473 Hainan Airlines 8 2026-07-18
CHH474 - 6 2026-07-17
CHH7338 Hainan Airlines 5 2026-06-02
CHH7337 Hainan Airlines 4 2026-05-30
CHH7716 - 3 2026-06-28
CHH7996 Hainan Airlines 2 2026-06-05
CHH7995 Hainan Airlines 2 2026-06-05
CHH7915 - 2 2026-07-14
CHH7811 - 2 2026-07-12
CHH7715 - 2 2026-06-20
CHH7709 - 2 2026-06-28
CHH7613 Hainan Airlines 2 2026-07-06
CHH7559 Hainan Airlines 2 2026-04-25
CHH7350 Hainan Airlines 2 2026-06-18
CHH7156 - 2 2026-06-30
CHH7155 - 2 2026-06-30
CHH7916 - 1 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 CHH473 PEK → KIX Jul 18, 01:50 UTCJul 18, 03:15 UTC1h 26m
2026-07-17 CHH6267 - Jul 17, 11:35 UTCJul 17, 11:45 UTC10m
2026-07-17 CHH474 - Jul 17, 05:45 UTCJul 17, 07:14 UTC1h 30m
2026-07-17 CHH473 - Jul 17, 01:55 UTCJul 17, 03:25 UTC1h 30m
2026-07-16 CHH6375 - Jul 16, 10:45 UTCJul 16, 10:59 UTC15m
2026-07-16 CHH7801 - Jul 16, 01:30 UTCJul 16, 01:50 UTC20m
2026-07-14 CHH706 - Jul 14, 14:00 UTCJul 14, 14:10 UTC10m
2026-07-14 CHH7915 - Jul 14, 11:55 UTCJul 14, 12:30 UTC35m
2026-07-14 CHH7915 - Jul 14, 05:30 UTCJul 14, 09:40 UTC4h 10m
2026-07-14 CHH7916 - Jul 14, 03:10 UTCJul 14, 03:20 UTC10m
2026-07-14 CHH705 - Jul 14, 00:35 UTCJul 14, 01:05 UTC30m
2026-07-13 CHH7082 - Jul 13, 11:20 UTCJul 13, 11:40 UTC20m
2026-07-13 CHH474 - Jul 13, 05:40 UTCJul 13, 07:01 UTC1h 20m
2026-07-13 CHH473 - Jul 13, 02:01 UTCJul 13, 03:30 UTC1h 30m
2026-07-12 CHH7811 - Jul 12, 08:50 UTCJul 12, 09:10 UTC20m
2026-07-10 CHH7074 - Jul 10, 11:45 UTCJul 11, 07:15 UTC19h 31m
2026-07-10 CHH7238 - Jul 10, 08:40 UTCJul 10, 09:00 UTC20m
2026-07-10 CHH7237 - Jul 10, 03:40 UTCJul 10, 03:55 UTC15m
2026-07-09 CHH7167 - Jul 9, 00:20 UTCJul 9, 00:40 UTC20m
2026-07-07 CHH7435 - Jul 7, 10:00 UTCJul 7, 10:15 UTC15m
2026-07-06 CHH7613 PEK → PVG Jul 6, 23:50 UTCJul 7, 00:00 UTC10m
2026-07-06 CHH7807 - Jul 6, 04:50 UTCJul 6, 05:05 UTC15m
2026-07-05 CHH7805 - Jul 5, 03:25 UTCJul 5, 03:45 UTC20m
2026-07-04 CHH7816 - Jul 4, 20:15 UTCJul 4, 20:25 UTC10m
2026-07-04 CHH7811 - Jul 4, 11:20 UTCJul 4, 11:30 UTC10m
2026-07-04 CHH7191 - Jul 4, 00:20 UTCJul 4, 00:35 UTC15m
2026-07-03 CHH7492 - Jul 3, 16:40 UTCJul 3, 16:50 UTC10m
2026-07-01 CHH7577 - Jul 1, 23:20 UTCJul 1, 23:30 UTC10m
2026-07-01 CHH7279 - Jul 1, 05:30 UTCJul 1, 05:45 UTC15m
2026-06-30 CHH7702 - Jun 30, 23:30 UTCJun 30, 23:40 UTC10m
2026-06-30 CHH7392 - Jun 30, 14:15 UTCJun 30, 14:40 UTC25m
2026-06-30 CHH7391 - Jun 30, 09:15 UTCJun 30, 09:25 UTC10m
2026-06-30 CHH7156 - Jun 30, 07:40 UTCJun 30, 08:00 UTC20m
2026-06-30 CHH7155 - Jun 30, 02:35 UTCJun 30, 02:45 UTC10m
2026-06-30 CHH7398 - Jun 30, 00:20 UTCJun 30, 00:39 UTC20m
2026-06-29 CHH7772 - Jun 29, 12:34 UTCJun 29, 12:45 UTC10m
2026-06-29 CHH7771 - Jun 29, 07:59 UTCJun 29, 08:09 UTC10m
2026-06-29 CHH7703 - Jun 29, 02:00 UTCJun 29, 02:14 UTC15m
2026-06-28 CHH7716 - Jun 28, 18:40 UTCJun 28, 18:49 UTC10m
2026-06-28 CHH7716 - Jun 28, 15:40 UTCJun 28, 16:14 UTC35m
2026-06-28 CHH7716 - Jun 28, 13:14 UTCJun 28, 13:25 UTC10m
2026-06-28 CHH7709 - Jun 28, 11:39 UTCJun 28, 11:50 UTC10m
2026-06-28 CHH7709 - Jun 28, 09:15 UTCJun 28, 09:25 UTC10m
2026-06-27 CHH7613 PEK → PVG Jun 27, 23:50 UTCJun 28, 00:04 UTC15m
2026-06-27 CHH7777 - Jun 27, 06:19 UTCJun 27, 09:09 UTC2h 50m
2026-06-27 CHH7138 - Jun 27, 03:44 UTCJun 27, 04:09 UTC25m
2026-06-26 CHH7522 - Jun 26, 13:34 UTCJun 26, 13:45 UTC10m
2026-06-24 CHH7522 - Jun 24, 13:30 UTCJun 24, 13:44 UTC15m
2026-06-23 CHH7872 - Jun 23, 05:59 UTCJun 23, 06:09 UTC10m
2026-06-22 CHH7874 - Jun 22, 09:10 UTCJun 22, 09:19 UTC10m

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-1387 page for operator, model, and routing details .

Mode-S 7812ED frequently asked

What is Mode-S code 7812ED?
7812ED is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1387.
Where is Mode-S 7812ED registered?
Mode-S code 7812ED is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812ED broadcasting right now?
No active broadcast right now. Last signal was 49m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812ED, octal 36011355, decimal 7,869,165.
What flights does 7812ED operate?
Mode-S 7812ED has broadcast 20 distinct callsigns, including CHH7522, CHH7923, CHH7924, CHH473, CHH474.