Apparatus

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sensors Mode-S transponder

78135E

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1240 · BOEING 737-800

Hex
78135E
Octal
36011536
Decimal
7,869,278
Country
CN
Tail
B-1240
Type
B738
No current signal · last broadcast 12h ago
Flights observed
74
Distinct callsigns
20
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 78135E.

Country allocation

The ICAO 24-bit address 78135E 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
CSN3881 China Southern Airlines 6 2026-05-22
CSN8437 China Southern Airlines 5 2026-05-24
CSN3791 China Southern Airlines 5 2026-06-02
CSN8417 China Southern Airlines 4 2026-05-13
CSN3771 China Southern Airlines 4 2026-05-30
CSN3749 China Southern Airlines 4 2026-05-23
CSN8701 - 3 2026-05-16
CSN3882 China Southern Airlines 3 2026-05-12
CSN3735 China Southern Airlines 3 2026-05-28
CSN8418 China Southern Airlines 2 2026-05-13
CSN6905 China Southern Airlines 2 2026-05-26
CSN5829 China Southern Airlines 2 2026-05-18
CSN5733 China Southern Airlines 2 2026-05-17
CSN3781 China Southern Airlines 2 2026-04-22
CSN3755 China Southern Airlines 2 2026-05-27
CSN3750 China Southern Airlines 2 2026-05-23
CSN3739 China Southern Airlines 2 2026-04-21
CSN3729 China Southern Airlines 2 2026-05-23
CSN8285 China Southern Airlines 1 2026-05-21
CSN6916 China Southern Airlines 1 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CSN3747 ZUH → KMG Jun 2, 10:30 UTCJun 2, 10:45 UTC15m
2026-06-02 CSN3791 ZUH → TYN Jun 2, 02:00 UTCJun 2, 02:20 UTC20m
2026-06-01 CSN3791 ZUH → TYN Jun 1, 02:05 UTCJun 1, 02:20 UTC15m
2026-05-30 CSN3771 ZUH → CGO May 30, 05:50 UTCMay 30, 06:10 UTC20m
2026-05-30 CSN3771 ZUH → CGO May 30, 01:30 UTCMay 30, 01:40 UTC10m
2026-05-29 CSN5118 ZUH → XIY May 29, 04:20 UTCMay 29, 04:35 UTC15m
2026-05-28 CSN3735 ZUH → PKX May 28, 08:15 UTCMay 28, 08:25 UTC10m
2026-05-27 CSN3755 ZUH → PVG May 27, 08:15 UTCMay 27, 08:25 UTC10m
2026-05-27 CSN3767 ZUH → TFU May 27, 01:05 UTCMay 27, 01:14 UTC10m
2026-05-26 CSN6905 URC → PKX May 26, 10:14 UTCMay 26, 10:25 UTC10m
2026-05-25 CSN6916 PKX → URC May 25, 09:55 UTCMay 25, 10:10 UTC15m
2026-05-24 CSN8437 ZUH → TFU May 24, 07:30 UTCMay 24, 07:40 UTC10m
2026-05-23 CSN3729 CAN → LZH May 23, 06:50 UTCMay 23, 07:00 UTC10m
2026-05-23 CSN3750 HGH → ZUH May 23, 05:15 UTCMay 23, 05:30 UTC15m
2026-05-23 CSN3749 ZUH → HGH May 23, 00:10 UTCMay 23, 00:25 UTC15m
2026-05-22 CSN3881 ZUH → HGH May 22, 09:25 UTCMay 22, 09:35 UTC10m
2026-05-21 CSN8437 ZUH → TFU May 21, 07:40 UTCMay 21, 07:55 UTC15m
2026-05-21 CSN8285 ZUH → CKG May 21, 00:35 UTCMay 21, 00:45 UTC10m
2026-05-20 CSN6905 URC → PKX May 20, 10:25 UTCMay 20, 10:40 UTC15m
2026-05-19 CSN8437 ZUH → TFU May 19, 07:35 UTCMay 19, 07:55 UTC20m
2026-05-18 CSN5829 ZUH → CGO May 18, 07:00 UTCMay 18, 07:10 UTC10m
2026-05-17 CSN5733 CAN → CQW May 17, 07:00 UTCMay 17, 07:10 UTC10m
2026-05-16 CSN8701 - May 16, 11:11 UTCMay 16, 11:21 UTC10m
2026-05-15 CSN6221 NNG → XMN May 15, 01:05 UTCMay 15, 04:10 UTC3h 5m
2026-05-14 CSN3735 ZUH → PKX May 14, 09:10 UTCMay 14, 09:25 UTC15m
2026-05-13 CSN8418 NKG → ZUH May 13, 05:45 UTCMay 13, 06:05 UTC20m
2026-05-13 CSN8417 ZUH → NKG May 13, 00:35 UTCMay 13, 00:50 UTC15m
2026-05-12 CSN3882 HGH → ZUH May 12, 14:20 UTCMay 12, 14:40 UTC20m
2026-05-12 CSN3881 ZUH → HGH May 12, 09:15 UTCMay 12, 09:30 UTC15m
2026-05-11 CSN3881 ZUH → HGH May 11, 09:40 UTCMay 11, 09:50 UTC10m
2026-05-10 CSN8437 ZUH → TFU May 10, 07:19 UTCMay 10, 07:30 UTC10m
2026-05-09 CSN8701 - May 9, 11:10 UTCMay 9, 11:20 UTC10m
2026-05-09 CSN3733 ZUH → PEK May 9, 02:15 UTCMay 9, 02:30 UTC15m
2026-05-08 CSN5733 CAN → CQW May 8, 13:30 UTCMay 8, 13:40 UTC10m
2026-05-07 CSN6050 CXR → CAN May 7, 10:40 UTCMay 7, 11:10 UTC30m
2026-05-07 CSN6049 CAN → CXR May 7, 06:05 UTCMay 7, 06:15 UTC10m
2026-05-06 CSN6704 ZUH → YIW May 6, 08:30 UTCMay 6, 08:40 UTC10m
2026-05-06 CSN8417 ZUH → NKG May 6, 00:31 UTCMay 6, 00:40 UTC10m
2026-05-05 CSN3791 ZUH → TYN May 5, 02:05 UTCMay 5, 02:15 UTC10m
2026-05-04 CSN5725 ZUH → CKG May 4, 15:15 UTCMay 4, 15:25 UTC10m
2026-05-04 CSN3755 ZUH → PVG May 4, 08:05 UTCMay 4, 08:15 UTC10m
2026-05-03 CSN3729 CAN → LZH May 3, 08:30 UTCMay 3, 08:45 UTC15m
2026-05-02 CSN3789 ZUH → KMG May 2, 23:55 UTCMay 3, 00:05 UTC10m
2026-05-02 CSN3882 HGH → ZUH May 2, 13:55 UTCMay 2, 14:15 UTC20m
2026-05-02 CSN3881 ZUH → HGH May 2, 09:20 UTCMay 2, 09:30 UTC10m
2026-05-01 CSN8437 ZUH → TFU May 1, 07:35 UTCMay 1, 07:45 UTC10m
2026-05-01 CSN8417 ZUH → NKG May 1, 01:00 UTCMay 1, 01:10 UTC10m
2026-04-30 CSN3881 ZUH → HGH Apr 30, 09:20 UTCApr 30, 09:30 UTC10m
2026-04-29 CSN3749 ZUH → HGH Apr 29, 00:00 UTCApr 29, 00:15 UTC15m
2026-04-27 CSN8701 - Apr 27, 11:10 UTCApr 27, 11:20 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-1240 page for operator, model, and routing details .

Mode-S 78135E frequently asked

What is Mode-S code 78135E?
78135E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1240.
Where is Mode-S 78135E registered?
Mode-S code 78135E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78135E broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78135E, octal 36011536, decimal 7,869,278.
What flights does 78135E operate?
Mode-S 78135E has broadcast 20 distinct callsigns, including CSN3881, CSN8437, CSN3791, CSN8417, CSN3771.