Apparatus

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sensors Mode-S transponder

781377

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1270 · BOEING 737-800

Hex
781377
Octal
36011567
Decimal
7,869,303
Country
CN
Tail
B-1270
Type
B738
No current signal · last broadcast 1d ago
Flights observed
61
Distinct callsigns
0
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781377.

Country allocation

The ICAO 24-bit address 781377 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.

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CJX8927 - Jul 17, 01:05 UTCJul 17, 01:20 UTC15m
2026-07-16 CJX8910 - Jul 16, 12:49 UTCJul 16, 13:00 UTC10m
2026-07-16 CJX8909 - Jul 16, 11:15 UTCJul 16, 11:30 UTC15m
2026-07-10 - - Jul 10, 01:00 UTCJul 10, 01:10 UTC10m
2026-07-06 CJX8910 - Jul 6, 15:20 UTCJul 6, 15:30 UTC10m
2026-07-06 CJX8909 - Jul 6, 13:15 UTCJul 6, 13:35 UTC20m
2026-07-04 CJX8903 - Jul 4, 10:55 UTCJul 4, 15:30 UTC4h 35m
2026-07-04 CJX8928 - Jul 4, 07:05 UTCJul 4, 07:15 UTC10m
2026-07-04 CJX8883 - Jul 4, 03:00 UTCJul 4, 03:15 UTC15m
2026-07-03 CJX8927 - Jul 3, 01:20 UTCJul 3, 01:40 UTC20m
2026-06-30 CJX8928 - Jun 30, 06:55 UTCJun 30, 07:05 UTC10m
2026-06-30 CJX8883 - Jun 30, 02:40 UTCJun 30, 02:55 UTC15m
2026-06-27 CJX8927 - Jun 27, 01:00 UTCJun 27, 05:39 UTC4h 40m
2026-06-24 CJX8910 - Jun 24, 12:40 UTCJun 24, 12:54 UTC15m
2026-06-23 CJX8909 - Jun 23, 10:04 UTCJun 23, 10:24 UTC20m
2026-06-22 CJX8904 - Jun 22, 15:14 UTCJun 22, 15:29 UTC15m
2026-06-22 CJX8903 - Jun 22, 10:49 UTCJun 22, 11:00 UTC10m
2026-06-22 CJX8927 - Jun 22, 02:40 UTCJun 22, 02:54 UTC15m
2026-06-21 CJX8904 - Jun 21, 14:54 UTCJun 21, 15:05 UTC10m
2026-06-21 CJX8903 - Jun 21, 10:54 UTCJun 21, 11:05 UTC10m
2026-06-21 CJX8928 - Jun 21, 06:55 UTCJun 21, 07:04 UTC10m
2026-06-21 CJX8883 - Jun 21, 02:40 UTCJun 21, 02:55 UTC15m
2026-06-13 CJX8928 - Jun 13, 07:40 UTCJun 13, 07:55 UTC15m
2026-06-13 CJX8883 - Jun 13, 03:20 UTCJun 13, 03:35 UTC15m
2026-06-11 CJX8927 - Jun 11, 01:20 UTCJun 11, 01:35 UTC15m
2026-06-10 CJX8903 - Jun 10, 10:00 UTCJun 10, 10:15 UTC15m
2026-06-09 CJX8904 - Jun 9, 14:05 UTCJun 9, 14:15 UTC10m
2026-06-09 CJX8903 - Jun 9, 10:00 UTCJun 9, 10:20 UTC20m
2026-06-08 CJX8904 - Jun 8, 14:25 UTCJun 8, 14:35 UTC10m
2026-06-07 CJX8910 - Jun 7, 14:05 UTCJun 7, 14:15 UTC10m
2026-06-06 CJX8928 - Jun 6, 11:39 UTCJun 6, 11:55 UTC15m
2026-06-05 CJX8913 - Jun 5, 11:30 UTCJun 6, 03:35 UTC16h 5m
2026-06-05 CJX8927 - Jun 5, 01:00 UTCJun 5, 15:05 UTC14h 5m
2026-06-04 CJX8910 - Jun 4, 12:50 UTCJun 4, 13:00 UTC10m
2026-06-03 CJX8904 - Jun 3, 14:30 UTCJun 3, 14:40 UTC10m
2026-06-02 CJX8909 - Jun 2, 09:50 UTCJun 2, 10:05 UTC15m
2026-05-31 CJX8913 - May 31, 01:10 UTCMay 31, 15:15 UTC14h 5m
2026-05-30 CJX8928 - May 30, 07:35 UTCMay 30, 07:45 UTC10m
2026-05-16 CJX8913 - May 16, 11:25 UTCMay 16, 15:10 UTC3h 45m
2026-05-15 CJX8910 - May 15, 16:05 UTCMay 15, 16:15 UTC10m
2026-05-15 CJX8909 - May 15, 14:00 UTCMay 15, 14:15 UTC15m
2026-05-13 CJX8910 - May 13, 12:10 UTCMay 13, 12:20 UTC10m
2026-05-09 CJX8884 - May 9, 01:10 UTCMay 9, 05:45 UTC4h 35m
2026-05-07 CJX8910 - May 7, 11:55 UTCMay 7, 12:05 UTC10m
2026-05-07 CJX8909 - May 7, 10:05 UTCMay 7, 10:15 UTC10m
2026-05-05 CJX8904 - May 5, 07:55 UTCMay 5, 08:05 UTC10m
2026-05-05 CJX8903 - May 5, 03:35 UTCMay 5, 03:50 UTC15m
2026-04-29 CJX8903 - Apr 29, 10:50 UTCApr 29, 11:05 UTC15m
2026-04-25 CJX8927 - Apr 25, 01:00 UTCApr 25, 01:10 UTC10m
2026-04-24 CJX8909 - Apr 24, 10:55 UTCApr 24, 11:05 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-1270 page for operator, model, and routing details .

Mode-S 781377 frequently asked

What is Mode-S code 781377?
781377 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1270.
Where is Mode-S 781377 registered?
Mode-S code 781377 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781377 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781377, octal 36011567, decimal 7,869,303.