Apparatus

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sensors Mode-S transponder

781498

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-300Y · AIRBUS A-320

Hex
781498
Octal
36012230
Decimal
7,869,592
Country
CN
Tail
B-300Y
Type
A320
No current signal · last broadcast Jul 25, 15:10 UTC
Flights observed
142
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 15:10 UTC

Last known position

Most recent position reported by Mode-S 781498.

Country allocation

The ICAO 24-bit address 781498 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
CQH8933 - 5 2026-06-25
CQH6809 Spring Airlines 5 2026-06-05
CQH6218 - 5 2026-06-22
CQH6217 - 5 2026-06-22
CQH8632 - 4 2026-07-13
CQH8631 - 4 2026-07-13
CQH8559 - 4 2026-06-21
CQH7348 - 4 2026-07-17
CQH7502 Spring Airlines 3 2026-05-12
CQH7501 Spring Airlines 3 2026-04-27
CQH7285 - 3 2026-06-21
CQH7049 Spring Airlines 3 2026-06-19
CQH6900 - 3 2026-06-24
CQH6899 - 3 2026-06-24
CQH8951 Spring Airlines 2 2026-05-25
CQH8875 - 2 2026-06-25
CQH8771 Spring Airlines 2 2026-07-16
CQH8671 - 2 2026-06-12
CQH8512 - 2 2026-06-26
CQH7432 - 2 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CQH6628 CNX → XIY Jul 25, 14:25 UTCJul 25, 15:10 UTC45m
2026-07-25 CQH6627 XIY → CNX Jul 25, 12:10 UTCJul 25, 12:55 UTC45m
2026-07-22 CQH8610 BKK → KHN Jul 22, 12:05 UTCJul 22, 13:45 UTC1h 40m
2026-07-21 CQH6190 HRB → PVG Jul 21, 15:10 UTCJul 22, 10:25 UTC19h 15m
2026-07-21 CQH6190 HRB → PVG Jul 21, 07:00 UTCJul 21, 16:00 UTC9h 0m
2026-07-20 CQH6390 - Jul 20, 15:10 UTCJul 21, 07:00 UTC15h 50m
2026-07-20 CQH6538 - Jul 20, 09:10 UTCJul 21, 07:00 UTC21h 50m
2026-07-20 CQH6537 PVG → FUK Jul 20, 06:50 UTCJul 20, 07:30 UTC40m
2026-07-19 CQH7636 - Jul 19, 23:50 UTCJul 20, 03:15 UTC3h 25m
2026-07-19 CQH7278 - Jul 19, 06:35 UTCJul 19, 06:45 UTC10m
2026-07-19 CQH7277 - Jul 19, 02:20 UTCJul 19, 02:35 UTC15m
2026-07-17 CQH7348 - Jul 17, 08:30 UTCJul 17, 14:55 UTC6h 25m
2026-07-16 CQH8771 CAN → HKT Jul 16, 22:35 UTCJul 17, 03:05 UTC4h 30m
2026-07-16 CQH7348 - Jul 16, 14:10 UTCJul 16, 14:25 UTC15m
2026-07-16 CQH7347 - Jul 16, 08:30 UTCJul 16, 08:50 UTC20m
2026-07-16 CQH6922 - Jul 16, 05:55 UTCJul 16, 06:15 UTC20m
2026-07-16 CQH6922 - Jul 16, 02:40 UTCJul 16, 03:00 UTC20m
2026-07-16 CQH6921 - Jul 16, 00:25 UTCJul 16, 00:45 UTC20m
2026-07-15 CQH7348 - Jul 15, 15:10 UTCJul 15, 15:25 UTC15m
2026-07-15 CQH8772 - Jul 15, 02:25 UTCJul 15, 04:20 UTC1h 55m
2026-07-14 CQH8771 - Jul 14, 22:00 UTCJul 15, 00:25 UTC2h 24m
2026-07-14 CQH6278 - Jul 14, 16:25 UTCJul 14, 19:50 UTC3h 25m
2026-07-14 CQH6277 - Jul 14, 14:30 UTCJul 14, 14:55 UTC25m
2026-07-14 CQH8678 - Jul 14, 04:50 UTCJul 14, 05:20 UTC30m
2026-07-13 CQH8632 - Jul 13, 11:25 UTCJul 13, 11:40 UTC15m
2026-07-13 CQH8632 - Jul 13, 10:20 UTCJul 13, 10:30 UTC10m
2026-07-13 CQH8631 - Jul 13, 08:35 UTCJul 13, 08:55 UTC20m
2026-07-13 CQH7512 - Jul 13, 01:25 UTCJul 13, 02:05 UTC40m
2026-07-10 CQH7432 - Jul 10, 07:10 UTCJul 10, 09:25 UTC2h 15m
2026-07-10 CQH7431 - Jul 10, 02:25 UTCJul 10, 05:45 UTC3h 20m
2026-07-09 CQH7385 - Jul 9, 11:00 UTCJul 9, 15:40 UTC4h 40m
2026-07-07 CQH8632 - Jul 7, 14:50 UTCJul 7, 15:05 UTC15m
2026-07-07 CQH8631 - Jul 7, 11:45 UTCJul 7, 12:55 UTC1h 10m
2026-07-06 CQH8631 - Jul 6, 16:05 UTCJul 7, 12:55 UTC20h 50m
2026-07-06 CQH6628 - Jul 6, 15:25 UTCJul 7, 12:55 UTC21h 30m
2026-07-06 CQH6627 - Jul 6, 13:10 UTCJul 6, 14:05 UTC55m
2026-07-06 CQH6836 - Jul 6, 03:20 UTCJul 6, 03:30 UTC10m
2026-07-02 CQH6156 - Jul 2, 03:40 UTCJul 2, 03:55 UTC15m
2026-07-01 - - Jul 1, 09:55 UTCJul 1, 10:05 UTC10m
2026-06-29 CQH7133 LHW → TSN Jun 29, 09:54 UTCJun 29, 10:20 UTC25m
2026-06-28 CQH7432 - Jun 28, 07:20 UTCJun 28, 09:39 UTC2h 20m
2026-06-28 CQH7431 - Jun 28, 03:14 UTCJun 28, 05:34 UTC2h 20m
2026-06-26 CQH8878 - Jun 26, 10:30 UTCJun 26, 11:14 UTC45m
2026-06-26 CQH8512 - Jun 26, 01:45 UTCJun 26, 09:00 UTC7h 15m
2026-06-25 CQH8933 CNX → CNX Jun 25, 14:34 UTCJun 26, 00:20 UTC9h 45m
2026-06-25 CQH8511 - Jun 25, 04:10 UTCJun 25, 13:20 UTC9h 10m
2026-06-25 CQH8875 - Jun 25, 02:10 UTCJun 25, 02:25 UTC15m
2026-06-24 CQH6900 - Jun 24, 13:20 UTCJun 25, 01:35 UTC12h 15m
2026-06-24 CQH6899 - Jun 24, 11:34 UTCJun 24, 11:54 UTC20m
2026-06-23 CQH8560 - Jun 23, 08:04 UTCJun 23, 08:30 UTC25m

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-300Y page for operator, model, and routing details .

Mode-S 781498 frequently asked

What is Mode-S code 781498?
781498 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-300Y.
Where is Mode-S 781498 registered?
Mode-S code 781498 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781498 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 15:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781498, octal 36012230, decimal 7,869,592.
What flights does 781498 operate?
Mode-S 781498 has broadcast 20 distinct callsigns, including CQH8933, CQH6809, CQH6218, CQH6217, CQH8632.