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 3h ago
Flights observed
121
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

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
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
CQH8671 - 2 2026-06-12
CQH8512 - 2 2026-06-26
CQH7432 - 2 2026-07-10
CQH7431 - 2 2026-07-10
CQH7420 - 2 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-22 CQH6218 - Jun 22, 12:05 UTCJun 23, 06:29 UTC18h 25m
2026-06-22 CQH6218 NRT → ICN Jun 22, 11:14 UTCJun 23, 06:29 UTC19h 15m
2026-06-22 CQH6217 - Jun 22, 01:44 UTCJun 22, 09:30 UTC7h 45m
2026-06-21 CQH8933 - Jun 21, 22:49 UTCJun 22, 00:24 UTC1h 35m
2026-06-21 CQH7420 - Jun 21, 16:49 UTCJun 21, 18:25 UTC1h 35m
2026-06-21 CQH7285 - Jun 21, 07:59 UTCJun 21, 15:25 UTC7h 25m
2026-06-21 CQH8559 - Jun 21, 05:54 UTCJun 21, 06:44 UTC50m
2026-06-20 CQH8559 - Jun 20, 10:15 UTCJun 21, 06:44 UTC20h 30m
2026-06-20 CQH7050 CJJ → PVG Jun 20, 03:14 UTCJun 20, 10:55 UTC7h 40m
2026-06-19 CQH7049 PVG → CJJ Jun 19, 10:19 UTCJun 20, 01:34 UTC15h 15m
2026-06-19 CQH7049 PVG → CJJ Jun 19, 04:04 UTCJun 20, 01:34 UTC21h 30m
2026-06-19 CQH7049 PVG → CJJ Jun 19, 03:49 UTCJun 20, 01:34 UTC21h 45m
2026-06-18 CQH8875 - Jun 18, 08:05 UTCJun 19, 02:35 UTC18h 29m
2026-06-17 CQH6218 - Jun 17, 12:10 UTCJun 18, 06:25 UTC18h 15m
2026-06-17 CQH6217 - Jun 17, 09:05 UTCJun 17, 10:45 UTC1h 40m
2026-06-16 CQH6538 - Jun 16, 09:00 UTCJun 16, 09:25 UTC25m
2026-06-15 CQH6900 PUS → PVG Jun 15, 13:20 UTCJun 15, 13:45 UTC25m
2026-06-15 CQH6899 - Jun 15, 11:34 UTCJun 15, 11:54 UTC20m
2026-06-14 CQH7360 YSQ → PVG Jun 14, 03:35 UTCJun 14, 13:20 UTC9h 45m
2026-06-13 CQH6900 PUS → PVG Jun 13, 13:20 UTCJun 14, 04:05 UTC14h 45m
2026-06-13 CQH6899 - Jun 13, 11:35 UTCJun 13, 11:55 UTC20m

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 3h ago.
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.