Apparatus

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sensors Mode-S transponder

7812E6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1373 · BOEING 737-800

Hex
7812E6
Octal
36011346
Decimal
7,869,158
Country
CN
Tail
B-1373
Type
B738
No current signal · last broadcast 9h ago
Flights observed
137
Distinct callsigns
20
Country
CN
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 7812E6.

Country allocation

The ICAO 24-bit address 7812E6 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
CHH7759 - 15 2026-06-29
CHH7760 - 7 2026-06-29
CHH7739 Hainan Airlines 5 2026-05-06
CHH7874 Hainan Airlines 4 2026-04-26
CHH7870 Hainan Airlines 4 2026-04-21
CHH7869 Hainan Airlines 4 2026-04-25
CHH7746 - 4 2026-07-16
CHH7745 - 4 2026-07-16
CHH7873 Hainan Airlines 3 2026-04-24
CHH7872 Hainan Airlines 3 2026-05-11
CHH7762 Hainan Airlines 3 2026-05-04
CHH7761 Hainan Airlines 3 2026-05-05
CHH7475 Hainan Airlines 3 2026-05-02
CHH7770 - 2 2026-07-08
CHH7769 - 2 2026-07-08
CHH7752 - 2 2026-07-10
CHH7751 Hainan Airlines 2 2026-07-09
CHH7715 Hainan Airlines 2 2026-04-21
CHH7710 Hainan Airlines 2 2026-04-21
CHH7630 - 2 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CHH7026 - Jul 17, 13:35 UTCJul 17, 13:45 UTC10m
2026-07-17 CHH7766 - Jul 17, 12:00 UTCJul 17, 12:10 UTC10m
2026-07-16 CHH7746 - Jul 16, 09:20 UTCJul 16, 09:40 UTC20m
2026-07-16 CHH7745 - Jul 16, 03:05 UTCJul 16, 03:15 UTC10m
2026-07-16 CHH7558 - Jul 16, 00:35 UTCJul 16, 00:45 UTC10m
2026-07-12 CHH7101 - Jul 12, 10:01 UTCJul 12, 10:10 UTC10m
2026-07-11 CHH7557 - Jul 11, 14:35 UTCJul 11, 14:45 UTC10m
2026-07-11 CHH7155 - Jul 11, 02:20 UTCJul 11, 02:30 UTC10m
2026-07-11 CHH7398 - Jul 11, 00:05 UTCJul 11, 00:45 UTC40m
2026-07-10 CHH7397 - Jul 10, 14:35 UTCJul 10, 14:45 UTC10m
2026-07-10 CHH7275 - Jul 10, 06:50 UTCJul 10, 07:05 UTC15m
2026-07-10 CHH7752 - Jul 10, 05:25 UTCJul 10, 05:35 UTC10m
2026-07-09 CHH7751 SZX → CTU Jul 9, 23:15 UTCJul 9, 23:25 UTC10m
2026-07-09 CHH7730 - Jul 9, 18:35 UTCJul 9, 18:45 UTC10m
2026-07-09 CHH7729 - Jul 9, 07:25 UTCJul 9, 07:35 UTC10m
2026-07-09 CHH7752 - Jul 9, 05:55 UTCJul 9, 06:15 UTC20m
2026-07-08 CHH7751 SZX → CTU Jul 8, 23:40 UTCJul 8, 23:50 UTC10m
2026-07-08 - - Jul 8, 19:20 UTCJul 8, 19:50 UTC30m
2026-07-08 CHH7770 - Jul 8, 12:10 UTCJul 8, 12:55 UTC45m
2026-07-08 CHH7630 - Jul 8, 08:50 UTCJul 8, 09:05 UTC15m
2026-07-08 CHH7769 - Jul 8, 00:00 UTCJul 8, 00:15 UTC15m
2026-07-07 CHH7256 - Jul 7, 21:15 UTCJul 7, 21:25 UTC10m
2026-07-07 CHH7255 - Jul 7, 14:45 UTCJul 7, 14:55 UTC10m
2026-07-07 CHH7394 - Jul 7, 08:05 UTCJul 7, 09:25 UTC1h 20m
2026-07-06 CHH7746 - Jul 6, 10:25 UTCJul 6, 10:45 UTC20m
2026-07-06 CHH7745 - Jul 6, 08:10 UTCJul 6, 08:35 UTC25m
2026-07-06 CHH7558 - Jul 6, 00:45 UTCJul 6, 00:55 UTC10m
2026-07-04 CHH7028 - Jul 4, 16:45 UTCJul 4, 16:55 UTC10m
2026-07-04 CHH7709 - Jul 4, 10:15 UTCJul 4, 10:25 UTC10m
2026-07-03 CHH7290 - Jul 3, 14:45 UTCJul 3, 15:05 UTC20m
2026-07-02 CHH784 - Jul 2, 14:45 UTCJul 2, 15:20 UTC35m
2026-07-02 CHH748 - Jul 2, 04:00 UTCJul 2, 12:35 UTC8h 35m
2026-07-01 CHH747 - Jul 1, 23:50 UTCJul 2, 02:35 UTC2h 45m
2026-07-01 CHH7028 - Jul 1, 15:55 UTCJul 1, 16:10 UTC15m
2026-07-01 CHH7771 - Jul 1, 07:40 UTCJul 1, 07:50 UTC10m
2026-07-01 CHH7175 - Jul 1, 00:00 UTCJul 1, 00:15 UTC15m
2026-06-30 CHH7770 - Jun 30, 09:50 UTCJun 30, 10:10 UTC20m
2026-06-30 CHH7630 - Jun 30, 05:20 UTCJun 30, 05:35 UTC15m
2026-06-30 CHH7629 - Jun 30, 03:40 UTCJun 30, 04:00 UTC20m
2026-06-29 CHH7769 - Jun 29, 23:49 UTCJun 30, 00:00 UTC10m
2026-06-29 CHH7760 - Jun 29, 16:10 UTCJun 29, 16:19 UTC10m
2026-06-29 CHH7759 - Jun 29, 09:05 UTCJun 29, 13:39 UTC4h 35m
2026-06-28 CHH7735 - Jun 28, 22:34 UTCJun 28, 22:45 UTC10m
2026-06-28 CHH7746 - Jun 28, 14:54 UTCJun 28, 15:05 UTC10m
2026-06-28 CHH7746 - Jun 28, 09:15 UTCJun 28, 09:39 UTC25m
2026-06-28 CHH7745 - Jun 28, 06:44 UTCJun 28, 07:09 UTC25m
2026-06-28 CHH7745 - Jun 28, 02:54 UTCJun 28, 03:09 UTC15m
2026-06-27 CHH6394 - Jun 27, 15:00 UTCJun 27, 15:10 UTC10m
2026-06-27 CHH7318 - Jun 27, 04:49 UTCJun 27, 07:04 UTC2h 15m
2026-06-22 CHH7582 - Jun 22, 08:29 UTCJun 22, 11:14 UTC2h 45m

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-1373 page for operator, model, and routing details .

Mode-S 7812E6 frequently asked

What is Mode-S code 7812E6?
7812E6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1373.
Where is Mode-S 7812E6 registered?
Mode-S code 7812E6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812E6 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812E6, octal 36011346, decimal 7,869,158.
What flights does 7812E6 operate?
Mode-S 7812E6 has broadcast 20 distinct callsigns, including CHH7759, CHH7760, CHH7739, CHH7874, CHH7870.