Apparatus

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sensors Mode-S transponder

781085

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8646 · AIRBUS A-320

Hex
781085
Octal
36010205
Decimal
7,868,549
Country
CN
Tail
B-8646
Type
A320
No current signal · last broadcast 5h ago
Flights observed
88
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 781085.

Country allocation

The ICAO 24-bit address 781085 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 - 4 2026-07-12
CQH6539 - 4 2026-07-12
CQH6650 Spring Airlines 3 2026-05-05
CQH6649 Spring Airlines 3 2026-05-04
CQH8910 - 2 2026-07-01
CQH8661 - 2 2026-07-09
CQH8516 Spring Airlines 2 2026-05-31
CQH8515 Spring Airlines 2 2026-05-31
CQH7301 - 2 2026-07-16
CQH6482 - 2 2026-07-09
CQH6471 - 2 2026-06-27
CQH6181 Spring Airlines 2 2026-05-24
CQH8949 Spring Airlines 1 2026-05-08
CQH8933 Spring Airlines 1 2026-06-08
CQH8838 - 1 2026-04-13
CQH8790 - 1 2026-06-30
CQH8789 - 1 2026-06-30
CQH8727 - 1 2026-06-27
CQH8673 Spring Airlines 1 2026-04-30
CQH8671 Spring Airlines 1 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CQH8671 HIA → HRB Jul 17, 22:40 UTCJul 17, 22:49 UTC10m
2026-07-17 CQH6596 - Jul 17, 15:40 UTCJul 17, 16:00 UTC20m
2026-07-17 CQH6988 - Jul 17, 07:30 UTCJul 17, 08:59 UTC1h 30m
2026-07-17 CQH6987 - Jul 17, 04:49 UTCJul 17, 06:20 UTC1h 30m
2026-07-17 CQH6730 - Jul 17, 01:45 UTCJul 17, 02:05 UTC20m
2026-07-16 CQH6729 - Jul 16, 23:10 UTCJul 16, 23:29 UTC20m
2026-07-16 CQH7302 - Jul 16, 08:25 UTCJul 16, 10:50 UTC2h 25m
2026-07-16 CQH7301 - Jul 16, 06:50 UTCJul 16, 07:05 UTC15m
2026-07-16 CQH7301 - Jul 16, 04:00 UTCJul 16, 04:50 UTC50m
2026-07-12 CQH6595 - Jul 12, 22:50 UTCJul 12, 23:00 UTC10m
2026-07-12 CQH6540 - Jul 12, 16:20 UTCJul 12, 16:40 UTC20m
2026-07-12 CQH6540 - Jul 12, 12:10 UTCJul 12, 12:25 UTC15m
2026-07-12 CQH6539 - Jul 12, 09:30 UTCJul 12, 09:45 UTC15m
2026-07-12 CQH6539 - Jul 12, 05:10 UTCJul 12, 05:30 UTC20m
2026-07-11 CQH8613 - Jul 11, 22:40 UTCJul 11, 22:55 UTC15m
2026-07-11 CQH6540 - Jul 11, 18:45 UTCJul 11, 18:55 UTC10m
2026-07-11 CQH6540 - Jul 11, 13:50 UTCJul 11, 14:05 UTC15m
2026-07-11 CQH6539 - Jul 11, 10:35 UTCJul 11, 10:55 UTC20m
2026-07-11 CQH6539 - Jul 11, 05:01 UTCJul 11, 05:20 UTC20m
2026-07-10 CQH6786 - Jul 10, 13:40 UTCJul 10, 13:50 UTC10m
2026-07-10 CQH6785 - Jul 10, 02:30 UTCJul 10, 02:50 UTC20m
2026-07-09 CQH6482 - Jul 9, 18:30 UTCJul 9, 18:55 UTC25m
2026-07-09 CQH8661 - Jul 9, 09:25 UTCJul 9, 09:50 UTC25m
2026-07-07 CQH6628 - Jul 7, 15:20 UTCJul 7, 16:05 UTC45m
2026-07-07 CQH6627 - Jul 7, 13:15 UTCJul 7, 14:15 UTC1h 0m
2026-07-06 CQH6599 - Jul 6, 14:30 UTCJul 7, 13:15 UTC22h 45m
2026-07-05 CQH7278 - Jul 5, 06:35 UTCJul 5, 06:55 UTC20m
2026-07-05 CQH7277 - Jul 5, 02:20 UTCJul 5, 02:35 UTC15m
2026-07-01 CQH8910 - Jul 1, 02:50 UTCJul 1, 03:00 UTC10m
2026-06-30 CQH8790 - Jun 30, 11:00 UTCJun 30, 11:20 UTC20m
2026-06-30 CQH8789 - Jun 30, 09:05 UTCJun 30, 09:30 UTC25m
2026-06-30 CQH8662 - Jun 30, 06:00 UTCJun 30, 06:15 UTC15m
2026-06-29 CQH6481 - Jun 29, 22:19 UTCJun 29, 22:30 UTC10m
2026-06-29 CQH6482 - Jun 29, 16:50 UTCJun 29, 17:19 UTC30m
2026-06-29 CQH8661 - Jun 29, 09:29 UTCJun 29, 09:44 UTC15m
2026-06-27 CQH6472 - Jun 27, 14:54 UTCJun 27, 15:05 UTC10m
2026-06-27 CQH8727 - Jun 27, 09:00 UTCJun 27, 09:15 UTC15m
2026-06-27 CQH6471 - Jun 27, 00:50 UTCJun 27, 04:54 UTC4h 5m
2026-06-26 CQH6471 - Jun 26, 03:34 UTCJun 27, 01:09 UTC21h 35m
2026-06-25 CQH7386 - Jun 25, 10:39 UTCJun 25, 15:29 UTC4h 50m
2026-06-24 CQH7416 - Jun 24, 10:35 UTCJun 24, 10:45 UTC10m
2026-06-18 CQH6216 - Jun 18, 14:05 UTCJun 18, 14:35 UTC30m
2026-06-17 CQH7508 - Jun 17, 06:40 UTCJun 17, 06:55 UTC15m
2026-06-12 CQH7206 CJU → PKX Jun 12, 13:50 UTCJun 12, 14:25 UTC35m
2026-06-12 CQH7205 - Jun 12, 11:50 UTCJun 12, 12:10 UTC20m
2026-06-12 CQH7518 LHW → PKX Jun 12, 08:20 UTCJun 12, 08:45 UTC25m
2026-06-10 CQH8534 - Jun 10, 18:30 UTCJun 10, 19:20 UTC50m
2026-06-10 CQH7007 - Jun 10, 13:10 UTCJun 10, 13:20 UTC10m
2026-06-10 CQH6609 PVG → FUK Jun 10, 02:00 UTCJun 10, 02:30 UTC30m
2026-06-09 CQH6218 NRT → PVG Jun 9, 11:25 UTCJun 9, 13:05 UTC1h 40m

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-8646 page for operator, model, and routing details .

Mode-S 781085 frequently asked

What is Mode-S code 781085?
781085 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8646.
Where is Mode-S 781085 registered?
Mode-S code 781085 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781085 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781085, octal 36010205, decimal 7,868,549.
What flights does 781085 operate?
Mode-S 781085 has broadcast 20 distinct callsigns, including CQH6540, CQH6539, CQH6650, CQH6649, CQH8910.