Apparatus

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sensors Mode-S transponder

781385

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1290 · BOEING 737 MAX 8

Hex
781385
Octal
36011605
Decimal
7,869,317
Country
CN
Tail
B-1290
Type
B38M
No current signal · last broadcast 5h ago
Flights observed
123
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 781385.

Country allocation

The ICAO 24-bit address 781385 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
CXA8673 - 29 2026-07-16
CXA8674 - 22 2026-07-17
CXA8684 - 17 2026-07-16
CXA8683 - 12 2026-07-17
CXA864 Xiamen Airlines 4 2026-06-25
CXA8827 - 3 2026-07-06
CXA8694 - 3 2026-07-02
CXA8693 - 3 2026-07-02
CXA8359 Xiamen Airlines 3 2026-05-20
CXA8828 - 2 2026-07-06
CXA863 Xiamen Airlines 2 2026-06-22
CXA8390 - 2 2026-07-05
CXA8360 Xiamen Airlines 2 2026-05-04
CXA834 Xiamen Airlines 2 2026-05-19
CXA8304 - 2 2026-07-06
CXA828 - 2 2026-07-05
CXA827 - 2 2026-07-07
CXA819 Xiamen Airlines 2 2026-06-11
CXA854 Xiamen Airlines 1 2026-04-26
CXA853 Xiamen Airlines 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CXA8674 - Jul 17, 16:40 UTCJul 17, 20:44 UTC4h 5m
2026-07-17 CXA8683 - Jul 17, 14:00 UTCJul 17, 14:15 UTC15m
2026-07-16 CXA8684 - Jul 16, 23:49 UTCJul 17, 10:05 UTC10h 15m
2026-07-16 CXA8673 - Jul 16, 21:05 UTCJul 16, 21:19 UTC15m
2026-07-16 CXA8673 - Jul 16, 11:54 UTCJul 16, 20:29 UTC8h 35m
2026-07-15 CXA8684 - Jul 15, 02:05 UTCJul 15, 05:35 UTC3h 30m
2026-07-15 CXA8684 - Jul 15, 01:05 UTCJul 15, 01:20 UTC15m
2026-07-14 CXA8673 - Jul 14, 22:35 UTCJul 14, 22:55 UTC19m
2026-07-14 CXA8673 - Jul 14, 18:55 UTCJul 14, 21:45 UTC2h 50m
2026-07-13 CXA8674 - Jul 13, 16:30 UTCJul 13, 20:30 UTC4h 0m
2026-07-13 CXA8683 - Jul 13, 14:10 UTCJul 13, 14:30 UTC20m
2026-07-12 CXA8684 - Jul 12, 23:50 UTCJul 13, 10:15 UTC10h 25m
2026-07-12 CXA8673 - Jul 12, 21:50 UTCJul 12, 22:05 UTC15m
2026-07-12 CXA8673 - Jul 12, 18:10 UTCJul 12, 21:20 UTC3h 10m
2026-07-11 CXA8673 - Jul 11, 21:20 UTCJul 12, 21:15 UTC23h 55m
2026-07-11 CXA8674 - Jul 11, 21:00 UTCJul 12, 18:30 UTC21h 30m
2026-07-11 CXA8674 - Jul 11, 17:20 UTCJul 11, 21:25 UTC4h 5m
2026-07-10 CXA8673 - Jul 10, 18:35 UTCJul 10, 22:35 UTC4h 0m
2026-07-10 CXA8453 - Jul 10, 13:55 UTCJul 10, 14:10 UTC15m
2026-07-10 CXA8454 - Jul 10, 10:30 UTCJul 10, 10:45 UTC15m
2026-07-08 CXA8674 - Jul 8, 20:10 UTCJul 9, 14:25 UTC18h 15m
2026-07-08 CXA8674 - Jul 8, 17:20 UTCJul 9, 14:25 UTC21h 5m
2026-07-08 CXA8674 - Jul 8, 16:30 UTCJul 9, 14:25 UTC21h 55m
2026-07-08 CXA8683 - Jul 8, 14:10 UTCJul 8, 14:30 UTC20m
2026-07-08 CXA8684 - Jul 8, 00:25 UTCJul 8, 13:00 UTC12h 35m
2026-07-07 CXA8673 - Jul 7, 22:55 UTCJul 7, 23:10 UTC15m
2026-07-07 CXA8673 - Jul 7, 04:05 UTCJul 7, 22:25 UTC18h 20m
2026-07-07 CXA827 - Jul 7, 00:40 UTCJul 7, 02:25 UTC1h 45m
2026-07-06 CXA8828 - Jul 6, 15:20 UTCJul 6, 15:35 UTC15m
2026-07-06 CXA8827 - Jul 6, 13:30 UTCJul 6, 13:45 UTC15m
2026-07-06 CXA8827 - Jul 6, 12:50 UTCJul 6, 13:00 UTC10m
2026-07-06 CXA8304 - Jul 6, 04:55 UTCJul 6, 05:10 UTC15m
2026-07-06 CXA8303 - Jul 6, 02:45 UTCJul 6, 02:55 UTC10m
2026-07-05 CXA8390 - Jul 5, 16:05 UTCJul 5, 16:15 UTC10m
2026-07-05 CXA828 - Jul 5, 04:10 UTCJul 5, 04:40 UTC30m
2026-07-05 CXA827 - Jul 5, 02:00 UTCJul 5, 02:35 UTC35m
2026-07-02 CXA8674 - Jul 2, 16:45 UTCJul 2, 21:05 UTC4h 20m
2026-07-02 CXA8693 - Jul 2, 14:15 UTCJul 2, 14:30 UTC15m
2026-07-02 CXA8694 - Jul 2, 00:00 UTCJul 2, 12:50 UTC12h 50m
2026-07-01 CXA8673 - Jul 1, 17:15 UTCJul 1, 21:20 UTC4h 5m
2026-06-29 CXA8674 - Jun 29, 16:39 UTCJun 29, 20:54 UTC4h 15m
2026-06-29 CXA8683 - Jun 29, 13:59 UTCJun 29, 14:14 UTC15m
2026-06-29 CXA8684 - Jun 29, 00:10 UTCJun 29, 10:04 UTC9h 55m
2026-06-28 CXA8673 - Jun 28, 17:19 UTCJun 28, 21:24 UTC4h 5m
2026-06-27 CXA8674 - Jun 27, 20:14 UTCJun 28, 17:50 UTC21h 35m
2026-06-27 CXA8674 - Jun 27, 16:39 UTCJun 27, 20:55 UTC4h 15m
2026-06-27 CXA8693 - Jun 27, 14:25 UTCJun 27, 14:45 UTC20m
2026-06-26 CXA8694 - Jun 26, 23:44 UTCJun 27, 13:04 UTC13h 20m
2026-06-26 CXA8673 - Jun 26, 21:10 UTCJun 26, 21:24 UTC15m
2026-06-26 CXA8673 - Jun 26, 17:15 UTCJun 26, 20:40 UTC3h 25m

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-1290 page for operator, model, and routing details .

Mode-S 781385 frequently asked

What is Mode-S code 781385?
781385 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1290.
Where is Mode-S 781385 registered?
Mode-S code 781385 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781385 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 781385, octal 36011605, decimal 7,869,317.
What flights does 781385 operate?
Mode-S 781385 has broadcast 20 distinct callsigns, including CXA8673, CXA8674, CXA8684, CXA8683, CXA864.