Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

78124B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1335 · BOEING 737-800

Hex
78124B
Octal
36011113
Decimal
7,869,003
Country
CN
Tail
B-1335
Type
B738
No current signal · last broadcast Jul 26, 04:25 UTC
Flights observed
114
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 04:25 UTC

Last known position

Most recent position reported by Mode-S 78124B.

Country allocation

The ICAO 24-bit address 78124B 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
CSH809 - 14 2026-07-15
CSH810 Shanghai Airlines 12 2026-07-22
CSH805 Shanghai Airlines 11 2026-07-19
CSH840 Shanghai Airlines 8 2026-07-20
CSH839 - 8 2026-07-17
CSH868 - 7 2026-06-23
CSH867 Shanghai Airlines 7 2026-06-23
CSH830 - 5 2026-07-05
CSH828 - 5 2026-07-09
CSH851 Shanghai Airlines 4 2026-07-26
CSH852 Shanghai Airlines 3 2026-07-26
CSH841 Shanghai Airlines 3 2026-05-16
CSH827 - 3 2026-07-08
CSH806 - 3 2026-07-20
CSH9334 Shanghai Airlines 2 2026-05-31
CSH9333 Shanghai Airlines 2 2026-05-11
CSH877 Shanghai Airlines 2 2026-06-03
CSH854 Shanghai Airlines 2 2026-05-05
CSH829 - 2 2026-07-05
CSH7223 Shanghai Airlines 2 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSH852 TSA → SHA Jul 26, 03:30 UTCJul 26, 04:25 UTC55m
2026-07-26 CSH851 SHA → TSA Jul 26, 00:50 UTCJul 26, 02:20 UTC1h 30m
2026-07-22 CSH810 HKG → SHA Jul 22, 11:25 UTCJul 22, 12:30 UTC1h 5m
2026-07-20 CSH840 BKK → PVG Jul 20, 15:50 UTCJul 21, 03:30 UTC11h 40m
2026-07-20 CSH806 - Jul 20, 06:10 UTCJul 20, 14:40 UTC8h 30m
2026-07-19 CSH805 PVG → MFM Jul 19, 15:50 UTCJul 20, 03:25 UTC11h 35m
2026-07-19 CSH7224 BKI → PVG Jul 19, 14:20 UTCJul 19, 14:40 UTC20m
2026-07-19 CSH7223 PVG → BKI Jul 19, 11:20 UTCJul 19, 12:15 UTC55m
2026-07-17 CSH840 - Jul 17, 15:20 UTCJul 17, 15:29 UTC10m
2026-07-17 CSH839 - Jul 17, 13:45 UTCJul 17, 13:55 UTC10m
2026-07-17 CSH839 - Jul 17, 11:39 UTCJul 17, 11:55 UTC15m
2026-07-15 CSH810 - Jul 15, 11:45 UTCJul 15, 12:50 UTC1h 5m
2026-07-15 CSH809 - Jul 15, 09:15 UTCJul 15, 09:45 UTC30m
2026-07-15 CSH809 - Jul 15, 08:30 UTCJul 15, 08:40 UTC10m
2026-07-10 - - Jul 10, 01:00 UTCJul 10, 01:40 UTC40m
2026-07-09 CSH828 - Jul 9, 10:25 UTCJul 9, 10:55 UTC30m
2026-07-08 CSH827 BKI → ICN Jul 8, 15:00 UTCJul 9, 09:05 UTC18h 5m
2026-07-08 CSH7223 - Jul 8, 04:35 UTCJul 8, 13:40 UTC9h 5m
2026-07-05 CSH830 - Jul 5, 08:40 UTCJul 5, 08:55 UTC15m
2026-07-05 CSH829 - Jul 5, 06:50 UTCJul 5, 07:20 UTC30m
2026-07-04 CSH840 - Jul 4, 15:35 UTCJul 4, 17:45 UTC2h 10m
2026-07-03 CSH839 - Jul 3, 18:50 UTCJul 4, 14:15 UTC19h 25m
2026-07-03 CSH840 - Jul 3, 16:50 UTCJul 4, 14:15 UTC21h 25m
2026-07-03 CSH839 - Jul 3, 13:05 UTCJul 3, 15:25 UTC2h 20m
2026-07-02 CSH810 - Jul 2, 11:25 UTCJul 2, 12:20 UTC55m
2026-07-02 CSH809 - Jul 2, 09:00 UTCJul 2, 09:15 UTC15m
2026-07-01 CSH810 - Jul 1, 11:20 UTCJul 1, 12:20 UTC1h 0m
2026-07-01 CSH809 - Jul 1, 09:20 UTCJul 1, 09:35 UTC15m
2026-06-30 CSH810 - Jun 30, 11:15 UTCJun 30, 12:25 UTC1h 10m
2026-06-30 CSH809 - Jun 30, 09:20 UTCJun 30, 09:35 UTC15m
2026-06-30 CSH852 - Jun 30, 03:45 UTCJun 30, 08:25 UTC4h 40m
2026-06-30 CSH851 - Jun 30, 02:05 UTCJun 30, 02:35 UTC30m
2026-06-23 CSH868 - Jun 23, 17:39 UTCJun 23, 20:04 UTC2h 25m
2026-06-23 CSH867 PVG → BKI Jun 23, 16:09 UTCJun 23, 16:29 UTC20m
2026-06-23 CSH867 PVG → BKI Jun 23, 13:15 UTCJun 23, 13:50 UTC35m
2026-06-23 CSH830 - Jun 23, 08:54 UTCJun 23, 09:09 UTC15m
2026-06-23 CSH829 - Jun 23, 06:55 UTCJun 23, 07:19 UTC25m
2026-06-22 CSH868 - Jun 22, 17:29 UTCJun 22, 19:54 UTC2h 25m
2026-06-22 CSH867 PVG → BKI Jun 22, 07:04 UTCJun 22, 16:24 UTC9h 20m
2026-06-22 CSH806 - Jun 22, 05:54 UTCJun 22, 06:10 UTC15m
2026-06-22 CSH805 - Jun 22, 03:45 UTCJun 22, 04:09 UTC25m
2026-06-22 CSH805 - Jun 22, 02:45 UTCJun 22, 03:14 UTC30m
2026-06-20 CSH810 - Jun 20, 11:14 UTCJun 20, 11:30 UTC15m
2026-06-20 CSH809 - Jun 20, 08:19 UTCJun 20, 09:09 UTC50m
2026-06-17 CSH830 - Jun 17, 08:35 UTCJun 17, 08:50 UTC15m
2026-06-17 CSH830 - Jun 17, 06:40 UTCJun 17, 07:00 UTC20m
2026-06-16 CSH828 - Jun 16, 09:40 UTCJun 16, 10:04 UTC25m
2026-06-16 CSH827 - Jun 16, 07:30 UTCJun 16, 08:10 UTC40m
2026-06-14 CSH9538 - Jun 14, 00:50 UTCJun 14, 04:20 UTC3h 30m
2026-06-07 CSH806 MFM → PVG Jun 7, 06:45 UTCJun 7, 08:00 UTC1h 15m

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-1335 page for operator, model, and routing details .

Mode-S 78124B frequently asked

What is Mode-S code 78124B?
78124B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1335.
Where is Mode-S 78124B registered?
Mode-S code 78124B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78124B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 04:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78124B, octal 36011113, decimal 7,869,003.
What flights does 78124B operate?
Mode-S 78124B has broadcast 20 distinct callsigns, including CSH809, CSH810, CSH805, CSH840, CSH839.