Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781499

ICAO 24-bit transponder address · allocated to China

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

Hex
781499
Octal
36012231
Decimal
7,869,593
Country
CN
Tail
B-300X
Type
A320
No current signal · last broadcast 10h ago
Flights observed
108
Distinct callsigns
20
Country
CN
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 781499.

Country allocation

The ICAO 24-bit address 781499 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
CQH6218 - 6 2026-06-24
CQH6217 - 6 2026-06-24
CQH8771 Spring Airlines 4 2026-05-03
CQH7386 Spring Airlines 4 2026-04-21
CQH6825 - 4 2026-07-14
CQH8613 - 3 2026-07-08
CQH7206 Spring Airlines 3 2026-05-13
CQH6826 - 3 2026-07-14
CQH6538 - 3 2026-06-17
CQH6537 - 3 2026-06-17
CQH8933 Spring Airlines 2 2026-06-09
CQH8877 - 2 2026-06-14
CQH8753 Spring Airlines 2 2026-04-24
CQH8511 Spring Airlines 2 2026-06-09
CQH7205 Spring Airlines 2 2026-05-11
CQH6873 Spring Airlines 2 2026-04-25
CQH6728 - 2 2026-07-03
CQH6727 - 2 2026-07-03
CQH6539 - 2 2026-07-09
CQH9937 - 1 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CQH6826 - Jul 14, 10:45 UTCJul 14, 13:05 UTC2h 20m
2026-07-14 CQH6825 - Jul 14, 08:55 UTCJul 14, 09:10 UTC15m
2026-07-14 CQH6825 - Jul 14, 00:45 UTCJul 14, 07:45 UTC7h 0m
2026-07-13 CQH8762 - Jul 13, 08:15 UTCJul 13, 08:30 UTC15m
2026-07-13 CQH8761 - Jul 13, 04:15 UTCJul 13, 04:30 UTC15m
2026-07-12 CQH6369 - Jul 12, 14:40 UTCJul 12, 14:50 UTC10m
2026-07-11 CQH8673 - Jul 11, 10:10 UTCJul 11, 14:25 UTC4h 15m
2026-07-09 CQH6539 - Jul 9, 06:30 UTCJul 9, 06:40 UTC10m
2026-07-08 CQH8613 - Jul 8, 22:35 UTCJul 8, 22:45 UTC10m
2026-07-08 CQH6786 - Jul 8, 16:00 UTCJul 8, 16:20 UTC20m
2026-07-04 CQH8613 - Jul 4, 23:00 UTCJul 4, 23:15 UTC15m
2026-07-04 CQH6785 - Jul 4, 02:30 UTCJul 4, 02:40 UTC10m
2026-07-03 CQH6728 - Jul 3, 22:50 UTCJul 3, 23:00 UTC10m
2026-07-03 CQH6727 - Jul 3, 14:40 UTCJul 3, 14:55 UTC15m
2026-07-03 CQH8672 - Jul 3, 11:35 UTCJul 3, 11:55 UTC20m
2026-06-30 CQH9937 - Jun 30, 17:55 UTCJul 1, 12:05 UTC18h 10m
2026-06-25 CQH8952 - Jun 25, 03:29 UTCJun 25, 16:35 UTC13h 5m
2026-06-25 CQH8951 - Jun 25, 01:24 UTCJun 25, 01:54 UTC30m
2026-06-24 CQH6218 - Jun 24, 11:24 UTCJun 24, 13:10 UTC1h 45m
2026-06-24 CQH6217 - Jun 24, 03:35 UTCJun 24, 09:39 UTC6h 5m
2026-06-22 CQH6610 - Jun 22, 03:10 UTCJun 22, 03:35 UTC25m
2026-06-22 CQH6609 PVG → FUK Jun 22, 01:19 UTCJun 22, 01:35 UTC15m
2026-06-21 CQH6218 - Jun 21, 11:55 UTCJun 21, 13:44 UTC1h 50m
2026-06-21 CQH6217 - Jun 21, 01:55 UTCJun 21, 10:34 UTC8h 40m
2026-06-20 CQH7419 - Jun 20, 22:25 UTCJun 21, 00:34 UTC2h 10m
2026-06-20 CQH7348 - Jun 20, 13:55 UTCJun 20, 14:14 UTC20m
2026-06-20 CQH7347 - Jun 20, 08:34 UTCJun 20, 08:55 UTC20m
2026-06-19 CQH7008 PNH → CAN Jun 19, 17:09 UTCJun 19, 17:19 UTC10m
2026-06-19 CQH7007 - Jun 19, 11:54 UTCJun 19, 12:09 UTC15m
2026-06-17 CQH6538 - Jun 17, 09:15 UTCJun 17, 09:45 UTC30m
2026-06-17 CQH6537 - Jun 17, 06:55 UTCJun 17, 07:10 UTC15m
2026-06-16 CQH8534 - Jun 16, 04:45 UTCJun 16, 16:39 UTC11h 55m
2026-06-16 CQH8876 - Jun 16, 03:50 UTCJun 16, 04:15 UTC25m
2026-06-16 CQH8875 - Jun 16, 01:45 UTCJun 16, 02:04 UTC20m
2026-06-14 CQH8878 - Jun 14, 10:15 UTCJun 14, 11:15 UTC1h 0m
2026-06-14 CQH8877 - Jun 14, 03:50 UTCJun 14, 09:05 UTC5h 15m
2026-06-10 CQH6218 NRT → PVG Jun 10, 11:00 UTCJun 10, 12:35 UTC1h 35m
2026-06-10 CQH6217 PVG → NRT Jun 10, 01:50 UTCJun 10, 09:35 UTC7h 45m
2026-06-09 CQH8933 CAN → CNX Jun 9, 22:25 UTCJun 10, 00:40 UTC2h 15m
2026-06-09 CQH8934 CNX → CAN Jun 9, 14:35 UTCJun 9, 15:50 UTC1h 15m
2026-06-09 CQH8511 PVG → CNX Jun 9, 12:55 UTCJun 9, 13:15 UTC20m
2026-06-09 CQH8511 PVG → CNX Jun 9, 12:00 UTCJun 9, 12:20 UTC20m
2026-06-07 CQH7282 BKK → PVG Jun 7, 09:45 UTCJun 7, 11:50 UTC2h 5m
2026-06-06 CQH8756 BKK → PVG Jun 6, 19:50 UTCJun 7, 08:10 UTC12h 20m
2026-06-06 CQH8755 PVG → BKK Jun 6, 15:39 UTCJun 6, 17:54 UTC2h 15m
2026-06-05 CQH8560 ICN → PVG Jun 5, 08:10 UTCJun 5, 08:35 UTC25m
2026-06-04 CQH6218 NRT → PVG Jun 4, 12:20 UTCJun 5, 06:40 UTC18h 20m
2026-06-04 CQH6218 NRT → PVG Jun 4, 11:35 UTCJun 5, 06:40 UTC19h 5m
2026-06-04 CQH6217 PVG → NRT Jun 4, 08:35 UTCJun 4, 09:55 UTC1h 20m
2026-06-03 CQH6217 PVG → NRT Jun 3, 10:20 UTCJun 4, 09:55 UTC23h 35m

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

Mode-S 781499 frequently asked

What is Mode-S code 781499?
781499 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-300X.
Where is Mode-S 781499 registered?
Mode-S code 781499 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781499 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781499, octal 36012231, decimal 7,869,593.
What flights does 781499 operate?
Mode-S 781499 has broadcast 20 distinct callsigns, including CQH6218, CQH6217, CQH8771, CQH7386, CQH6825.