Apparatus

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sensors Mode-S transponder

78056A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5441 · BOEING 737-800

Hex
78056A
Octal
36002552
Decimal
7,865,706
Country
CN
Tail
B-5441
Type
B738
No current signal · last broadcast Jul 26, 09:40 UTC
Flights observed
163
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 09:40 UTC

Last known position

Most recent position reported by Mode-S 78056A.

Country allocation

The ICAO 24-bit address 78056A 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
CSZ9157 Shenzhen Airlines 7 2026-07-25
CSZ9098 Shenzhen Airlines 7 2026-07-23
CSZ9097 Shenzhen Airlines 6 2026-07-23
CSZ9303 - 5 2026-07-18
CSZ9816 - 4 2026-07-18
CSZ9804 Shenzhen Airlines 4 2026-07-25
CSZ8920 - 4 2026-07-14
CSZ8666 - 4 2026-07-08
CSZ9918 - 3 2026-06-16
CSZ9886 - 3 2026-06-21
CSZ9815 - 3 2026-07-22
CSZ9813 - 3 2026-07-08
CSZ9917 - 2 2026-06-16
CSZ9900 - 2 2026-06-17
CSZ9899 - 2 2026-06-17
CSZ9885 - 2 2026-06-21
CSZ9856 Shenzhen Airlines 2 2026-05-23
CSZ9846 Shenzhen Airlines 2 2026-05-21
CSZ9807 - 2 2026-07-09
CSZ9463 Shenzhen Airlines 2 2026-06-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9947 SZX → WUH Jul 26, 09:30 UTCJul 26, 09:40 UTC10m
2026-07-25 CSZ9937 SZX → CSX Jul 25, 12:40 UTCJul 25, 12:50 UTC10m
2026-07-25 CSZ9804 WUX → SZX Jul 25, 10:15 UTCJul 25, 10:35 UTC20m
2026-07-25 CSZ9157 PEK → WUX Jul 25, 03:10 UTCJul 25, 03:30 UTC20m
2026-07-25 CSZ9158 WUX → PEK Jul 25, 01:20 UTCJul 25, 01:45 UTC25m
2026-07-24 CSZ9157 PEK → WUX Jul 24, 03:45 UTCJul 24, 03:55 UTC10m
2026-07-23 CSZ9098 KIX → SZX Jul 23, 05:30 UTCJul 23, 06:30 UTC1h 0m
2026-07-23 CSZ9097 SZX → KIX Jul 23, 03:25 UTCJul 23, 04:00 UTC35m
2026-07-22 CSZ9815 - Jul 22, 23:10 UTCJul 22, 23:20 UTC10m
2026-07-22 CSZ9403 SZX → CTU Jul 22, 01:05 UTCJul 22, 01:15 UTC10m
2026-07-21 CSZ9526 PVG → SZX Jul 21, 16:10 UTCJul 21, 17:35 UTC1h 25m
2026-07-21 CSZ9461 CKG → NKG Jul 21, 01:05 UTCJul 21, 01:15 UTC10m
2026-07-20 CSZ8970 - Jul 20, 16:05 UTCJul 20, 16:30 UTC25m
2026-07-20 CSZ8969 - Jul 20, 11:55 UTCJul 20, 12:05 UTC10m
2026-07-19 CSZ8861 - Jul 19, 14:10 UTCJul 19, 14:20 UTC10m
2026-07-19 CSZ9323 SZX → SYX Jul 19, 07:30 UTCJul 19, 07:40 UTC10m
2026-07-18 CSZ9211 SZX → XIY Jul 18, 23:30 UTCJul 18, 23:40 UTC10m
2026-07-18 CSZ8938 - Jul 18, 17:45 UTCJul 18, 18:00 UTC15m
2026-07-18 CSZ8937 SZX → YIH Jul 18, 13:35 UTCJul 18, 13:45 UTC10m
2026-07-18 CSZ9304 CGO → SZX Jul 18, 10:30 UTCJul 18, 10:45 UTC15m
2026-07-18 CSZ9303 - Jul 18, 04:45 UTCJul 18, 04:55 UTC10m
2026-07-18 CSZ9816 - Jul 18, 03:20 UTCJul 18, 03:30 UTC10m
2026-07-15 CSZ9098 - Jul 15, 06:55 UTCJul 15, 08:00 UTC1h 5m
2026-07-15 CSZ9097 - Jul 15, 03:20 UTCJul 15, 03:55 UTC35m
2026-07-14 CSZ9815 - Jul 14, 23:00 UTCJul 14, 23:10 UTC10m
2026-07-14 CSZ9208 - Jul 14, 16:45 UTCJul 14, 16:55 UTC10m
2026-07-14 CSZ9207 - Jul 14, 10:40 UTCJul 14, 10:50 UTC10m
2026-07-14 CSZ8920 - Jul 14, 00:30 UTCJul 14, 07:20 UTC6h 50m
2026-07-13 CSZ9530 - Jul 13, 11:15 UTCJul 13, 15:25 UTC4h 10m
2026-07-13 CSZ9529 - Jul 13, 10:05 UTCJul 13, 10:15 UTC10m
2026-07-13 CSZ9804 - Jul 13, 08:05 UTCJul 13, 08:15 UTC10m
2026-07-11 CSZ9157 - Jul 11, 03:10 UTCJul 11, 03:25 UTC15m
2026-07-10 CSZ9161 - Jul 10, 15:05 UTCJul 10, 15:15 UTC10m
2026-07-10 CSZ9160 - Jul 10, 13:00 UTCJul 10, 13:15 UTC15m
2026-07-10 CSZ9159 - Jul 10, 08:20 UTCJul 10, 08:35 UTC15m
2026-07-10 CSZ9151 - Jul 10, 02:10 UTCJul 10, 02:30 UTC20m
2026-07-09 CSZ9807 - Jul 9, 04:45 UTCJul 9, 05:45 UTC1h 0m
2026-07-08 CSZ9813 - Jul 8, 15:15 UTCJul 9, 03:10 UTC11h 55m
2026-07-08 CSZ9303 - Jul 8, 05:10 UTCJul 8, 05:20 UTC10m
2026-07-08 CSZ8666 - Jul 8, 01:25 UTCJul 8, 02:30 UTC1h 5m
2026-07-07 CSZ8698 - Jul 7, 12:40 UTCJul 7, 12:55 UTC15m
2026-07-07 CSZ8697 - Jul 7, 05:45 UTCJul 7, 09:50 UTC4h 5m
2026-07-07 CSZ8661 - Jul 7, 04:40 UTCJul 7, 04:50 UTC10m
2026-07-06 CSZ9528 - Jul 6, 19:40 UTCJul 6, 20:25 UTC45m
2026-07-06 CSZ9527 - Jul 6, 10:15 UTCJul 6, 10:25 UTC10m
2026-07-06 CSZ8920 - Jul 6, 01:00 UTCJul 6, 08:20 UTC7h 20m
2026-07-06 CSZ8919 - Jul 6, 00:05 UTCJul 6, 00:15 UTC10m
2026-07-05 CSZ8928 - Jul 5, 18:25 UTCJul 5, 18:40 UTC15m
2026-07-05 CSZ8927 - Jul 5, 13:20 UTCJul 5, 13:30 UTC10m
2026-07-05 CSZ9405 - Jul 5, 04:05 UTCJul 5, 04:15 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-5441 page for operator, model, and routing details .

Mode-S 78056A frequently asked

What is Mode-S code 78056A?
78056A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5441.
Where is Mode-S 78056A registered?
Mode-S code 78056A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78056A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78056A, octal 36002552, decimal 7,865,706.
What flights does 78056A operate?
Mode-S 78056A has broadcast 20 distinct callsigns, including CSZ9157, CSZ9098, CSZ9097, CSZ9303, CSZ9816.