Apparatus

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sensors Mode-S transponder

7812EE

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1388 · BOEING 737 MAX 8

Hex
7812EE
Octal
36011356
Decimal
7,869,166
Country
CN
Tail
B-1388
Type
B38M
No current signal · last broadcast 6h ago
Flights observed
90
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 7812EE.

Country allocation

The ICAO 24-bit address 7812EE 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
CHH447 Hainan Airlines 7 2026-05-17
CHH7909 Hainan Airlines 4 2026-04-30
CHH748 Hainan Airlines 4 2026-05-23
CHH448 Hainan Airlines 4 2026-05-17
CHH747 Hainan Airlines 3 2026-05-22
CHH7156 Hainan Airlines 3 2026-05-26
CHH7155 Hainan Airlines 3 2026-05-29
CHH701 Hainan Airlines 3 2026-05-21
CHH473 Hainan Airlines 3 2026-04-22
CHH7771 - 2 2026-05-28
CHH7733 - 2 2026-04-17
CHH755 Hainan Airlines 2 2026-05-24
CHH7397 Hainan Airlines 2 2026-05-29
CHH7367 Hainan Airlines 2 2026-05-04
CHH7347 Hainan Airlines 2 2026-05-08
CHH7023 Hainan Airlines 2 2026-05-24
CHH6013 - 2 2026-04-21
CHH474 Hainan Airlines 2 2026-04-22
CHH449 Hainan Airlines 2 2026-04-13
CHH430 Hainan Airlines 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CHH7279 PEK → SYX May 30, 05:20 UTCMay 30, 08:15 UTC2h 55m
2026-05-29 CHH7397 SZX → HGH May 29, 16:05 UTCMay 29, 16:50 UTC45m
2026-05-29 CHH7155 SZX → NKG May 29, 02:50 UTCMay 29, 03:00 UTC10m
2026-05-28 CHH7772 - May 28, 13:05 UTCMay 28, 13:20 UTC15m
2026-05-28 CHH7771 - May 28, 07:20 UTCMay 28, 08:15 UTC55m
2026-05-28 CHH7175 SZX → TFU May 28, 00:10 UTCMay 28, 00:20 UTC10m
2026-05-27 CHH7256 NKG → SZX May 27, 14:50 UTCMay 27, 15:35 UTC45m
2026-05-27 CHH7255 SZX → NKG May 27, 10:25 UTCMay 27, 10:35 UTC10m
2026-05-26 CHH7392 HGH → SZX May 26, 15:29 UTCMay 26, 15:49 UTC20m
2026-05-26 CHH7156 NKG → SZX May 26, 07:15 UTCMay 26, 07:34 UTC20m
2026-05-26 CHH7155 SZX → NKG May 26, 02:44 UTCMay 26, 02:55 UTC10m
2026-05-25 CHH7747 SZX → TYN May 25, 10:20 UTCMay 25, 10:30 UTC10m
2026-05-25 CHH7156 NKG → SZX May 25, 07:10 UTCMay 25, 07:30 UTC20m
2026-05-24 CHH7023 SYX → NKG May 24, 23:20 UTCMay 24, 23:40 UTC20m
2026-05-24 CHH756 KUL → HAK May 24, 14:00 UTCMay 24, 14:15 UTC15m
2026-05-24 CHH497 BAR → KUL May 24, 11:50 UTCMay 24, 12:25 UTC35m
2026-05-24 CHH498 KUL → BAR May 24, 05:15 UTCMay 24, 05:25 UTC10m
2026-05-24 CHH755 HAK → KUL May 24, 02:20 UTCMay 24, 02:45 UTC25m
2026-05-23 CHH748 SIN → HAK May 23, 04:25 UTCMay 24, 02:45 UTC22h 20m
2026-05-22 CHH747 HAK → SIN May 22, 14:30 UTCMay 23, 02:15 UTC11h 45m
2026-05-22 CHH748 SIN → HAK May 22, 04:15 UTCMay 23, 02:15 UTC22h 0m
2026-05-21 CHH702 CGK → HAK May 21, 12:20 UTCMay 22, 02:40 UTC14h 20m
2026-05-21 CHH701 HAK → CGK May 21, 10:25 UTCMay 21, 10:40 UTC15m
2026-05-21 CHH7482 PEK → HAK May 21, 01:10 UTCMay 21, 01:30 UTC20m
2026-05-20 CHH7338 XIY → PEK May 20, 11:35 UTCMay 20, 12:00 UTC25m
2026-05-20 CHH7569 XIY → SHE May 20, 02:30 UTCMay 20, 02:40 UTC10m
2026-05-19 CHH7872 SZX → XIY May 19, 05:15 UTCMay 19, 05:25 UTC10m
2026-05-17 CHH448 HAK → TYN May 17, 20:45 UTCMay 18, 05:35 UTC8h 50m
2026-05-17 CHH447 HAK → SYD May 17, 10:25 UTCMay 17, 18:30 UTC8h 5m
2026-05-16 CHH7116 NKG → HAK May 16, 01:55 UTCMay 16, 06:55 UTC5h 1m
2026-05-13 CHH748 SIN → HAK May 13, 04:40 UTCMay 13, 16:00 UTC11h 20m
2026-05-13 CHH747 HAK → SIN May 13, 02:20 UTCMay 13, 02:30 UTC10m
2026-05-12 CHH748 SIN → HAK May 12, 04:25 UTCMay 13, 02:30 UTC22h 5m
2026-05-10 CHH448 HAK → TYN May 10, 21:04 UTCMay 10, 21:14 UTC10m
2026-05-10 CHH447 HAK → SYD May 10, 18:29 UTCMay 10, 18:39 UTC10m
2026-05-08 CHH7289 PEK → KWE May 8, 23:40 UTCMay 9, 07:40 UTC8h 0m
2026-05-08 CHH7347 PEK → TFU May 8, 06:50 UTCMay 8, 07:04 UTC15m
2026-05-07 CHH7187 PEK → WUH May 7, 00:55 UTCMay 7, 01:15 UTC20m
2026-05-06 CHH7295 PEK → FOC May 6, 09:35 UTCMay 6, 09:45 UTC10m
2026-05-06 CHH6015 - May 6, 02:20 UTCMay 6, 02:30 UTC10m
2026-05-05 CHH7481 HAK → PEK May 5, 06:25 UTCMay 5, 06:35 UTC10m
2026-05-04 CHH7367 PEK → CKG May 4, 13:55 UTCMay 4, 14:05 UTC10m
2026-05-04 CHH430 BKK → PEK May 4, 11:30 UTCMay 4, 11:40 UTC10m
2026-05-04 CHH430 BKK → PEK May 4, 07:05 UTCMay 4, 07:40 UTC35m
2026-05-04 CHH429 PEK → BKK May 4, 00:25 UTCMay 4, 05:10 UTC4h 45m
2026-05-03 CHH7347 PEK → TFU May 3, 06:55 UTCMay 3, 07:15 UTC20m
2026-05-02 CHH405 PEK → VVO May 2, 23:15 UTCMay 2, 23:25 UTC10m
2026-05-02 CHH7044 TNA → HAK May 2, 02:05 UTCMay 2, 08:15 UTC6h 10m
2026-05-01 CHH7043 HAK → TNA May 1, 05:35 UTCMay 2, 02:15 UTC20h 40m
2026-05-01 CHH448 HAK → TYN May 1, 05:25 UTCMay 2, 02:15 UTC20h 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-1388 page for operator, model, and routing details .

Mode-S 7812EE frequently asked

What is Mode-S code 7812EE?
7812EE is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1388.
Where is Mode-S 7812EE registered?
Mode-S code 7812EE is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812EE broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812EE, octal 36011356, decimal 7,869,166.
What flights does 7812EE operate?
Mode-S 7812EE has broadcast 20 distinct callsigns, including CHH447, CHH7909, CHH748, CHH448, CHH747.