Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 Jul 26, 11:30 UTC
Flights observed
180
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 11:30 UTC

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 12 2026-07-25
CSN3735 - 11 2026-07-17
CSN8417 China Southern Airlines 10 2026-07-25
CSN3749 - 9 2026-06-25
CSN3791 - 8 2026-07-20
CSN3771 - 7 2026-06-26
CSN8701 - 6 2026-07-03
CSN8437 - 6 2026-06-30
CSN3882 - 6 2026-07-19
CSN3750 - 6 2026-06-19
CSN3736 - 6 2026-07-17
CSN6906 China Southern Airlines 5 2026-06-27
CSN6905 - 5 2026-06-21
CSN3755 - 5 2026-07-16
CSN3729 - 5 2026-07-02
CSN3689 - 5 2026-07-13
CSN8285 - 4 2026-07-05
CSN3719 - 4 2026-07-13
CSN3690 - 4 2026-07-13
CSN3665 - 4 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN3645 CGQ → ZUH Jul 26, 11:15 UTCJul 26, 11:30 UTC15m
2026-07-25 CSN3881 ZUH → HGH Jul 25, 11:10 UTCJul 25, 11:25 UTC15m
2026-07-25 CSN8417 ZUH → NKG Jul 25, 00:45 UTCJul 25, 01:00 UTC15m
2026-07-24 CSN3881 ZUH → HGH Jul 24, 10:45 UTCJul 24, 16:10 UTC5h 25m
2026-07-24 CSN3767 ZUH → TFU Jul 24, 01:10 UTCJul 24, 01:20 UTC10m
2026-07-23 CSN3451 SZX → KMG Jul 23, 06:20 UTCJul 23, 06:30 UTC10m
2026-07-23 - - Jul 23, 04:45 UTCJul 23, 04:55 UTC10m
2026-07-22 CSN5861 SZX → CTU Jul 22, 23:10 UTCJul 22, 23:25 UTC15m
2026-07-22 CSN8417 ZUH → NKG Jul 22, 00:40 UTCJul 22, 00:55 UTC15m
2026-07-20 CSN3791 - Jul 20, 02:05 UTCJul 20, 02:20 UTC15m
2026-07-19 CSN3882 - Jul 19, 16:00 UTCJul 19, 16:20 UTC20m
2026-07-19 CSN3881 - Jul 19, 10:50 UTCJul 19, 11:00 UTC10m
2026-07-19 CSN8417 - Jul 19, 01:35 UTCJul 19, 01:50 UTC15m
2026-07-17 CSN3736 - Jul 17, 15:05 UTCJul 17, 15:20 UTC15m
2026-07-17 CSN3735 - Jul 17, 08:20 UTCJul 17, 08:30 UTC10m
2026-07-17 CSN8417 - Jul 17, 01:49 UTCJul 17, 01:59 UTC10m
2026-07-16 CSN3755 - Jul 16, 08:45 UTCJul 16, 08:55 UTC10m
2026-07-16 CSN8417 - Jul 16, 02:10 UTCJul 16, 02:25 UTC15m
2026-07-14 CSN3756 - Jul 14, 13:30 UTCJul 14, 14:00 UTC30m
2026-07-14 CSN3755 - Jul 14, 08:10 UTCJul 14, 08:20 UTC10m
2026-07-14 CSN3767 - Jul 14, 01:05 UTCJul 14, 01:15 UTC10m
2026-07-13 CSN3719 - Jul 13, 08:50 UTCJul 13, 09:00 UTC10m
2026-07-13 CSN3690 - Jul 13, 05:45 UTCJul 13, 07:05 UTC1h 20m
2026-07-13 CSN3689 - Jul 13, 01:20 UTCJul 13, 01:30 UTC10m
2026-07-12 CSN3720 - Jul 12, 13:55 UTCJul 12, 14:05 UTC10m
2026-07-12 CSN3719 - Jul 12, 08:50 UTCJul 12, 09:00 UTC10m
2026-07-12 CSN8417 - Jul 12, 00:40 UTCJul 12, 00:50 UTC10m
2026-07-11 CSN3719 - Jul 11, 08:50 UTCJul 11, 09:05 UTC15m
2026-07-11 CSN3689 - Jul 11, 01:20 UTCJul 11, 01:35 UTC15m
2026-07-10 CSN3882 - Jul 10, 14:10 UTCJul 10, 14:45 UTC35m
2026-07-10 CSN3881 - Jul 10, 09:15 UTCJul 10, 09:30 UTC15m
2026-07-10 CSN3690 - Jul 10, 06:35 UTCJul 10, 07:15 UTC40m
2026-07-10 CSN3689 - Jul 10, 02:00 UTCJul 10, 02:10 UTC10m
2026-07-09 CSN3882 - Jul 9, 15:05 UTCJul 9, 15:30 UTC25m
2026-07-09 CSN3881 - Jul 9, 10:15 UTCJul 9, 10:30 UTC15m
2026-07-06 CSN8474 - Jul 6, 22:20 UTCJul 6, 22:45 UTC25m
2026-07-06 CSN8473 - Jul 6, 16:15 UTCJul 6, 16:25 UTC10m
2026-07-06 CSN5844 - Jul 6, 11:50 UTCJul 6, 12:55 UTC1h 5m
2026-07-06 CSN5843 - Jul 6, 04:30 UTCJul 6, 04:40 UTC10m
2026-07-05 CSN8474 - Jul 5, 21:35 UTCJul 5, 21:55 UTC20m
2026-07-05 CSN8473 - Jul 5, 15:10 UTCJul 5, 15:25 UTC15m
2026-07-05 CSN3828 - Jul 5, 13:10 UTCJul 5, 13:30 UTC20m
2026-07-05 CSN8285 - Jul 5, 00:40 UTCJul 5, 00:50 UTC10m
2026-07-04 CSN8295 - Jul 4, 09:25 UTCJul 4, 09:40 UTC15m
2026-07-04 CSN3665 - Jul 4, 00:30 UTCJul 4, 00:40 UTC10m
2026-07-03 CSN8701 - Jul 3, 12:55 UTCJul 3, 13:05 UTC10m
2026-07-03 CSN3733 - Jul 3, 02:55 UTCJul 3, 03:05 UTC10m
2026-07-02 CSN3729 - Jul 2, 07:35 UTCJul 2, 07:50 UTC15m
2026-07-02 CSN3665 - Jul 2, 00:10 UTCJul 2, 00:20 UTC10m
2026-07-01 CSN3736 - Jul 1, 15:35 UTCJul 1, 15:50 UTC15m

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 Jul 26, 11:30 UTC.
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, CSN3735, CSN8417, CSN3749, CSN3791.