Apparatus

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sensors Mode-S transponder

781373

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1263 · BOEING 737 MAX 8

Hex
781373
Octal
36011563
Decimal
7,869,299
Country
CN
Tail
B-1263
Type
B38M
No current signal · last broadcast Jul 26, 21:50 UTC
Flights observed
105
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:50 UTC

Last known position

Most recent position reported by Mode-S 781373.

Country allocation

The ICAO 24-bit address 781373 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
CSH811 - 9 2026-07-02
CSH841 Shanghai Airlines 6 2026-07-22
CSH833 - 6 2026-06-26
CSH812 - 6 2026-07-02
CSH9255 - 5 2026-07-15
CSH868 Shanghai Airlines 4 2026-06-14
CSH867 Shanghai Airlines 4 2026-06-14
CSH857 Shanghai Airlines 4 2026-05-01
CSH847 Shanghai Airlines 4 2026-04-16
CSH843 Shanghai Airlines 4 2026-07-10
CSH839 - 4 2026-07-16
CSH834 - 4 2026-06-27
CSH9539 - 3 2026-06-12
CSH877 Shanghai Airlines 3 2026-07-26
CSH863 Shanghai Airlines 3 2026-05-12
CSH854 Shanghai Airlines 3 2026-07-24
CSH853 - 3 2026-07-23
CSH842 - 3 2026-07-04
CSH813 - 3 2026-07-18
CSH9253 Shanghai Airlines 2 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSH877 PVG → PEN Jul 26, 13:30 UTCJul 26, 21:50 UTC8h 20m
2026-07-25 CSH9136 BAV → PVG Jul 25, 13:50 UTCJul 25, 14:15 UTC25m
2026-07-24 CSH854 BKK → PVG Jul 24, 05:20 UTCJul 24, 08:30 UTC3h 10m
2026-07-23 CSH853 - Jul 23, 05:15 UTCJul 23, 14:40 UTC9h 25m
2026-07-22 CSH841 CGQ → PVG Jul 22, 18:00 UTCJul 22, 20:10 UTC2h 10m
2026-07-18 CSH814 - Jul 18, 19:35 UTCJul 19, 11:15 UTC15h 40m
2026-07-18 CSH813 - Jul 18, 13:10 UTCJul 18, 16:50 UTC3h 40m
2026-07-18 CSH813 - Jul 18, 07:50 UTCJul 18, 08:30 UTC40m
2026-07-17 CSH813 - Jul 17, 09:45 UTCJul 18, 08:30 UTC22h 46m
2026-07-17 CSH7222 - Jul 17, 06:10 UTCJul 17, 10:15 UTC4h 5m
2026-07-17 CSH7221 - Jul 17, 04:14 UTCJul 17, 04:35 UTC20m
2026-07-16 CSH7221 - Jul 16, 17:25 UTCJul 17, 01:25 UTC8h 0m
2026-07-16 CSH840 - Jul 16, 15:14 UTCJul 16, 15:25 UTC10m
2026-07-16 CSH839 - Jul 16, 13:25 UTCJul 16, 13:45 UTC20m
2026-07-15 CSH9255 - Jul 15, 03:20 UTCJul 15, 04:30 UTC1h 10m
2026-07-14 CSH9255 - Jul 14, 07:20 UTCJul 15, 04:30 UTC21h 9m
2026-07-14 CSH854 - Jul 14, 05:00 UTCJul 14, 05:10 UTC10m
2026-07-13 CSH841 - Jul 13, 06:35 UTCJul 13, 16:25 UTC9h 50m
2026-07-12 CSH841 - Jul 12, 10:10 UTCJul 13, 06:35 UTC20h 25m
2026-07-10 CSH844 - Jul 10, 19:45 UTCJul 10, 23:40 UTC3h 55m
2026-07-10 CSH843 PVG → SIN Jul 10, 14:10 UTCJul 10, 18:20 UTC4h 10m
2026-07-08 CSH854 - Jul 8, 05:10 UTCJul 8, 05:35 UTC25m
2026-07-07 CSH841 - Jul 7, 17:15 UTCJul 7, 18:50 UTC1h 35m
2026-07-04 CSH842 - Jul 4, 03:10 UTCJul 4, 04:50 UTC1h 40m
2026-07-02 CSH853 - Jul 2, 21:15 UTCJul 3, 16:05 UTC18h 50m
2026-07-02 CSH853 - Jul 2, 18:15 UTCJul 3, 16:05 UTC21h 50m
2026-07-02 CSH861 - Jul 2, 12:15 UTCJul 2, 16:30 UTC4h 15m
2026-07-02 CSH812 - Jul 2, 06:41 UTCJul 2, 07:00 UTC19m
2026-07-02 CSH811 - Jul 2, 04:50 UTCJul 2, 05:15 UTC25m
2026-07-01 CSH811 - Jul 1, 17:20 UTCJul 2, 04:05 UTC10h 45m
2026-07-01 CSH839 - Jul 1, 11:25 UTCJul 1, 12:20 UTC55m
2026-07-01 CSH878 - Jul 1, 00:50 UTCJul 1, 01:00 UTC10m
2026-06-30 CSH877 - Jun 30, 22:45 UTCJun 30, 23:00 UTC15m
2026-06-30 CSH877 - Jun 30, 19:45 UTCJun 30, 20:35 UTC50m
2026-06-28 CSH844 SIN → PVG Jun 28, 19:55 UTCJun 29, 00:10 UTC4h 15m
2026-06-28 CSH843 PVG → SIN Jun 28, 14:04 UTCJun 28, 18:14 UTC4h 10m
2026-06-27 CSH834 - Jun 27, 10:14 UTCJun 27, 12:29 UTC2h 15m
2026-06-26 CSH833 - Jun 26, 20:00 UTCJun 27, 08:14 UTC12h 15m
2026-06-26 CSH843 PVG → SIN Jun 26, 14:25 UTCJun 26, 18:24 UTC4h 0m
2026-06-23 CSH812 - Jun 23, 06:29 UTCJun 23, 06:44 UTC15m
2026-06-23 CSH811 - Jun 23, 03:54 UTCJun 23, 04:09 UTC15m
2026-06-22 CSH831 - Jun 22, 12:05 UTCJun 23, 03:04 UTC15h 0m
2026-06-20 CSH840 - Jun 20, 15:39 UTCJun 20, 18:34 UTC2h 55m
2026-06-20 CSH839 - Jun 20, 11:49 UTCJun 20, 14:05 UTC2h 15m
2026-06-16 CSH9255 - Jun 16, 03:35 UTCJun 16, 06:50 UTC3h 15m
2026-06-14 CSH868 BKI → PVG Jun 14, 17:40 UTCJun 14, 20:10 UTC2h 30m
2026-06-14 CSH867 PVG → BKI Jun 14, 13:05 UTCJun 14, 16:15 UTC3h 10m
2026-06-12 CSH9539 - Jun 12, 19:55 UTCJun 13, 09:15 UTC13h 19m
2026-06-12 CSH843 PVG → SIN Jun 12, 03:20 UTCJun 12, 18:15 UTC14h 55m
2026-06-11 CSH812 HKG → PVG Jun 11, 06:20 UTCJun 12, 03:35 UTC21h 16m

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-1263 page for operator, model, and routing details .

Mode-S 781373 frequently asked

What is Mode-S code 781373?
781373 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1263.
Where is Mode-S 781373 registered?
Mode-S code 781373 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781373 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781373, octal 36011563, decimal 7,869,299.
What flights does 781373 operate?
Mode-S 781373 has broadcast 20 distinct callsigns, including CSH811, CSH841, CSH833, CSH812, CSH9255.