Apparatus

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sensors Mode-S transponder

781047

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1557 · BOEING 737-800

Hex
781047
Octal
36010107
Decimal
7,868,487
Country
CN
Tail
B-1557
Type
B738
No current signal · last broadcast 4d ago
Flights observed
77
Distinct callsigns
12
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 781047.

Country allocation

The ICAO 24-bit address 781047 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 12 distinct

Callsign Airline Flights Last seen
CJX8910 - 17 2026-07-19
CJX8909 - 11 2026-07-05
CJX8903 - 10 2026-07-23
CJX8927 - 9 2026-07-20
CJX8883 - 8 2026-07-23
CJX8928 - 7 2026-07-09
CJX8904 - 7 2026-07-23
CJX8913 - 3 2026-06-03
CJX8931 - 2 2026-04-28
CJX8929 - 1 2026-04-28
CJX8906 - 1 2026-04-25
CJX8905 - 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 CJX8904 - Jul 23, 16:10 UTCJul 23, 16:20 UTC10m
2026-07-23 CJX8903 - Jul 23, 11:50 UTCJul 23, 12:00 UTC10m
2026-07-23 CJX8883 - Jul 23, 02:55 UTCJul 23, 03:15 UTC20m
2026-07-20 CJX8927 - Jul 20, 00:55 UTCJul 20, 01:10 UTC15m
2026-07-19 CJX8910 - Jul 19, 11:55 UTCJul 19, 12:05 UTC10m
2026-07-18 CJX8904 - Jul 18, 14:50 UTCJul 18, 15:00 UTC10m
2026-07-18 CJX8903 - Jul 18, 10:45 UTCJul 18, 10:55 UTC10m
2026-07-18 CJX8927 - Jul 18, 02:45 UTCJul 18, 07:05 UTC4h 21m
2026-07-12 CJX8910 - Jul 12, 11:50 UTCJul 12, 12:01 UTC10m
2026-07-09 CJX8903 - Jul 9, 10:50 UTCJul 9, 11:10 UTC20m
2026-07-09 CJX8928 - Jul 9, 07:05 UTCJul 9, 07:15 UTC10m
2026-07-09 CJX8883 - Jul 9, 02:55 UTCJul 9, 03:10 UTC15m
2026-07-07 CJX8927 - Jul 7, 01:15 UTCJul 7, 01:30 UTC15m
2026-07-05 CJX8910 - Jul 5, 14:05 UTCJul 5, 14:15 UTC10m
2026-07-05 CJX8909 - Jul 5, 10:45 UTCJul 5, 11:20 UTC35m
2026-07-02 CJX8904 - Jul 2, 15:40 UTCJul 2, 15:55 UTC15m
2026-07-02 CJX8903 - Jul 2, 11:25 UTCJul 2, 11:45 UTC20m
2026-07-01 CJX8927 - Jul 1, 01:00 UTCJul 1, 06:40 UTC5h 40m
2026-06-30 CJX8909 - Jun 30, 10:10 UTCJun 30, 10:20 UTC10m
2026-06-29 CJX8910 - Jun 29, 11:55 UTCJun 29, 12:05 UTC10m
2026-06-29 CJX8909 - Jun 29, 10:20 UTCJun 29, 10:34 UTC15m
2026-06-25 CJX8904 - Jun 25, 14:55 UTCJun 25, 15:04 UTC10m
2026-06-25 CJX8903 - Jun 25, 10:50 UTCJun 25, 11:04 UTC15m
2026-06-25 CJX8928 - Jun 25, 06:55 UTCJun 25, 07:05 UTC10m
2026-06-25 CJX8883 - Jun 25, 02:49 UTCJun 25, 03:10 UTC20m
2026-06-23 CJX8927 - Jun 23, 01:04 UTCJun 23, 01:20 UTC15m
2026-06-22 CJX8910 - Jun 22, 11:54 UTCJun 22, 12:05 UTC10m
2026-06-22 CJX8909 - Jun 22, 10:00 UTCJun 22, 10:10 UTC10m
2026-06-21 CJX8910 - Jun 21, 13:50 UTCJun 21, 13:59 UTC10m
2026-06-21 CJX8909 - Jun 21, 11:40 UTCJun 21, 11:49 UTC10m
2026-06-20 CJX8903 - Jun 20, 10:44 UTCJun 20, 10:59 UTC15m
2026-06-20 CJX8928 - Jun 20, 06:49 UTCJun 20, 07:00 UTC10m
2026-06-20 CJX8883 - Jun 20, 02:44 UTCJun 20, 02:59 UTC15m
2026-06-14 CJX8910 - Jun 14, 12:45 UTCJun 14, 12:55 UTC10m
2026-06-12 CJX8928 - Jun 12, 07:45 UTCJun 12, 07:55 UTC10m
2026-06-12 CJX8883 - Jun 12, 03:25 UTCJun 12, 03:45 UTC20m
2026-06-10 CJX8927 - Jun 10, 01:00 UTCJun 10, 01:20 UTC20m
2026-06-09 CJX8909 - Jun 9, 10:30 UTCJun 9, 10:40 UTC10m
2026-06-08 CJX8928 - Jun 8, 10:05 UTCJun 8, 10:15 UTC10m
2026-06-08 CJX8927 - Jun 8, 05:50 UTCJun 8, 06:10 UTC20m
2026-06-07 CJX8904 - Jun 7, 14:25 UTCJun 7, 14:35 UTC10m
2026-06-07 CJX8903 - Jun 7, 09:55 UTCJun 7, 10:10 UTC15m
2026-06-06 CJX8904 - Jun 6, 14:14 UTCJun 6, 14:25 UTC10m
2026-06-06 CJX8903 - Jun 6, 09:55 UTCJun 6, 10:09 UTC15m
2026-06-05 CJX8904 - Jun 5, 14:45 UTCJun 5, 15:05 UTC20m
2026-06-05 CJX8903 - Jun 5, 09:50 UTCJun 5, 10:05 UTC15m
2026-06-03 CJX8913 - Jun 3, 12:35 UTCJun 4, 03:40 UTC15h 5m
2026-06-03 CJX8927 - Jun 3, 01:00 UTCJun 3, 15:50 UTC14h 50m
2026-06-02 CJX8927 - Jun 2, 14:15 UTCJun 3, 13:15 UTC23h 0m
2026-05-31 CJX8910 - May 31, 12:50 UTCMay 31, 13:00 UTC10m

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-1557 page for operator, model, and routing details .

Mode-S 781047 frequently asked

What is Mode-S code 781047?
781047 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1557.
Where is Mode-S 781047 registered?
Mode-S code 781047 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781047 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781047, octal 36010107, decimal 7,868,487.
What flights does 781047 operate?
Mode-S 781047 has broadcast 12 distinct callsigns, including CJX8910, CJX8909, CJX8903, CJX8927, CJX8883.