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sensors Mode-S transponder

7807B1

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6820 · AIRBUS A-320

Hex
7807B1
Octal
36003661
Decimal
7,866,289
Country
CN
Tail
B-6820
Type
A320
No current signal · last broadcast Jul 26, 16:40 UTC
Flights observed
129
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 16:40 UTC

Last known position

Most recent position reported by Mode-S 7807B1.

Country allocation

The ICAO 24-bit address 7807B1 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
CQH6540 Spring Airlines 12 2026-07-26
CQH6539 Spring Airlines 10 2026-07-26
CQH8613 - 5 2026-07-13
CQH8662 Spring Airlines 4 2026-07-26
CQH7461 - 4 2026-07-24
CQH6596 Spring Airlines 4 2026-07-10
CQH8661 Spring Airlines 3 2026-07-25
CQH8632 - 3 2026-06-27
CQH8631 - 3 2026-06-27
CQH7419 - 3 2026-07-19
CQH6785 Spring Airlines 3 2026-07-21
CQH6732 - 3 2026-06-05
CQH6731 - 3 2026-06-04
CQH6595 Spring Airlines 3 2026-06-02
CQH8910 - 2 2026-04-27
CQH8753 - 2 2026-07-10
CQH7462 - 2 2026-07-24
CQH7286 Spring Airlines 2 2026-07-19
CQH6874 Spring Airlines 2 2026-05-28
CQH6825 - 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CQH6540 SJW → SZX Jul 26, 16:20 UTCJul 26, 16:40 UTC20m
2026-07-26 CQH6540 SJW → SZX Jul 26, 12:05 UTCJul 26, 12:15 UTC10m
2026-07-26 CQH6539 SZX → SJW Jul 26, 09:15 UTCJul 26, 09:35 UTC20m
2026-07-26 CQH8662 CGQ → SJW Jul 26, 05:55 UTCJul 26, 06:10 UTC15m
2026-07-25 CQH8661 SJW → CGQ Jul 25, 09:40 UTCJul 25, 09:50 UTC10m
2026-07-24 CQH7462 - Jul 24, 13:50 UTCJul 24, 23:30 UTC9h 40m
2026-07-24 CQH7461 - Jul 24, 10:25 UTCJul 24, 10:45 UTC20m
2026-07-24 - - Jul 24, 07:50 UTCJul 24, 08:00 UTC10m
2026-07-22 CQH7654 HKT → TFU Jul 22, 00:00 UTCJul 22, 05:05 UTC5h 5m
2026-07-21 CQH8781 SZX → HKT Jul 21, 22:10 UTCJul 21, 22:20 UTC10m
2026-07-21 CQH6786 - Jul 21, 15:45 UTCJul 21, 16:00 UTC15m
2026-07-21 CQH6785 WUH → WUA Jul 21, 02:45 UTCJul 21, 02:55 UTC10m
2026-07-20 CQH8512 CNX → PVG Jul 20, 01:55 UTCJul 20, 17:35 UTC15h 40m
2026-07-19 CQH8934 - Jul 19, 15:55 UTCJul 20, 00:30 UTC8h 35m
2026-07-19 CQH8511 - Jul 19, 04:10 UTCJul 19, 14:35 UTC10h 25m
2026-07-19 CQH7286 BKK → PVG Jul 19, 01:50 UTCJul 19, 02:05 UTC15m
2026-07-19 CQH7419 - Jul 19, 00:20 UTCJul 19, 00:35 UTC15m
2026-07-18 CQH6278 SIN → CAN Jul 18, 18:00 UTCJul 18, 18:20 UTC20m
2026-07-18 CQH6278 SIN → CAN Jul 18, 14:50 UTCJul 18, 15:15 UTC25m
2026-07-18 CQH6277 CAN → SIN Jul 18, 13:05 UTCJul 18, 13:30 UTC25m
2026-07-18 CQH6277 CAN → SIN Jul 18, 10:15 UTCJul 18, 10:25 UTC10m
2026-07-17 CQH8762 - Jul 17, 08:25 UTCJul 17, 08:35 UTC10m
2026-07-16 CQH8662 - Jul 16, 06:10 UTCJul 16, 06:30 UTC20m
2026-07-15 CQH6481 - Jul 15, 22:35 UTCJul 15, 22:50 UTC15m
2026-07-15 CQH6786 - Jul 15, 14:55 UTCJul 15, 15:05 UTC10m
2026-07-15 CQH6785 - Jul 15, 02:45 UTCJul 15, 02:55 UTC10m
2026-07-14 CQH6540 - Jul 14, 16:25 UTCJul 14, 16:45 UTC20m
2026-07-14 CQH6540 - Jul 14, 12:10 UTCJul 14, 12:25 UTC15m
2026-07-14 CQH6539 - Jul 14, 09:25 UTCJul 14, 09:40 UTC15m
2026-07-14 CQH6539 - Jul 14, 05:30 UTCJul 14, 05:45 UTC15m
2026-07-14 CQH8614 - Jul 14, 04:00 UTCJul 14, 04:10 UTC10m
2026-07-13 CQH8613 - Jul 13, 22:55 UTCJul 13, 23:05 UTC10m
2026-07-13 CQH6540 - Jul 13, 16:25 UTCJul 13, 16:35 UTC10m
2026-07-13 CQH6540 - Jul 13, 12:10 UTCJul 13, 12:30 UTC20m
2026-07-13 CQH6539 - Jul 13, 09:10 UTCJul 13, 09:25 UTC15m
2026-07-13 CQH6539 - Jul 13, 05:05 UTCJul 13, 05:20 UTC15m
2026-07-12 CQH6785 - Jul 12, 02:20 UTCJul 12, 02:40 UTC20m
2026-07-11 CQH6728 - Jul 11, 15:05 UTCJul 11, 15:25 UTC20m
2026-07-11 CQH6727 - Jul 11, 10:45 UTCJul 11, 10:55 UTC10m
2026-07-10 CQH8753 - Jul 10, 22:35 UTCJul 10, 22:50 UTC15m
2026-07-10 CQH6596 TNA → SZX Jul 10, 15:40 UTCJul 10, 16:00 UTC20m
2026-07-10 CQH6988 - Jul 10, 07:30 UTCJul 10, 09:00 UTC1h 30m
2026-07-10 CQH6987 - Jul 10, 01:45 UTCJul 10, 06:20 UTC4h 35m
2026-07-09 CQH6729 - Jul 9, 23:15 UTCJul 9, 23:40 UTC25m
2026-07-07 CQH7302 - Jul 7, 08:20 UTCJul 7, 10:40 UTC2h 20m
2026-07-07 CQH7301 - Jul 7, 04:15 UTCJul 7, 06:55 UTC2h 40m
2026-07-06 CQH7612 - Jul 6, 05:25 UTCJul 6, 06:05 UTC40m
2026-07-04 CQH8936 - Jul 4, 15:05 UTCJul 4, 15:40 UTC35m
2026-07-04 CQH6873 - Jul 4, 06:50 UTCJul 4, 07:05 UTC15m
2026-07-03 CQH6540 - Jul 3, 20:50 UTCJul 3, 21:05 UTC15m

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-6820 page for operator, model, and routing details .

Mode-S 7807B1 frequently asked

What is Mode-S code 7807B1?
7807B1 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6820.
Where is Mode-S 7807B1 registered?
Mode-S code 7807B1 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7807B1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7807B1, octal 36003661, decimal 7,866,289.
What flights does 7807B1 operate?
Mode-S 7807B1 has broadcast 20 distinct callsigns, including CQH6540, CQH6539, CQH8613, CQH8662, CQH7461.