Apparatus

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sensors Mode-S transponder

78104A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1533 · BOEING 737-800

Hex
78104A
Octal
36010112
Decimal
7,868,490
Country
CN
Tail
B-1533
Type
B738
No current signal · last broadcast Jul 26, 14:45 UTC
Flights observed
188
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:45 UTC

Last known position

Most recent position reported by Mode-S 78104A.

Country allocation

The ICAO 24-bit address 78104A 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
EPA6221 - 18 2026-07-18
EPA6209 - 17 2026-06-24
EPA6210 - 15 2026-06-25
EPA6222 - 14 2026-07-18
EPA6203 - 14 2026-06-23
EPA6265 - 12 2026-07-14
EPA6204 - 10 2026-06-22
EPA6405 Shenzhen Donghai Airlines 9 2026-07-19
EPA6270 - 9 2026-06-21
EPA6269 - 9 2026-06-21
EPA6266 - 9 2026-07-15
EPA6406 Shenzhen Donghai Airlines 5 2026-07-18
EPA6244 Shenzhen Donghai Airlines 4 2026-06-17
EPA6243 - 4 2026-06-17
EPA6364 - 3 2026-07-19
EPA6363 Shenzhen Donghai Airlines 3 2026-07-19
EPA6281 Shenzhen Donghai Airlines 3 2026-04-19
EPA6226 - 3 2026-07-09
EPA6283 - 2 2026-07-04
EPA6282 - 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EPA6276 - Jul 26, 14:10 UTCJul 26, 14:45 UTC35m
2026-07-22 EPA6276 - Jul 22, 16:00 UTCJul 22, 16:35 UTC35m
2026-07-19 EPA6364 - Jul 19, 17:45 UTCJul 19, 18:00 UTC15m
2026-07-19 EPA6363 SZX → WUX Jul 19, 07:30 UTCJul 19, 07:45 UTC15m
2026-07-19 EPA6405 SZX → KWE Jul 19, 01:25 UTCJul 19, 01:35 UTC10m
2026-07-18 EPA6222 - Jul 18, 16:30 UTCJul 18, 16:40 UTC10m
2026-07-18 EPA6221 - Jul 18, 07:15 UTCJul 18, 07:30 UTC15m
2026-07-18 EPA6406 KWE → SZX Jul 18, 05:35 UTCJul 18, 05:45 UTC10m
2026-07-18 EPA6405 SZX → KWE Jul 18, 01:20 UTCJul 18, 01:34 UTC15m
2026-07-17 EPA6364 - Jul 17, 18:50 UTCJul 17, 19:05 UTC15m
2026-07-17 EPA6363 - Jul 17, 07:20 UTCJul 17, 07:35 UTC15m
2026-07-17 EPA6406 - Jul 17, 05:45 UTCJul 17, 05:55 UTC10m
2026-07-17 EPA6405 - Jul 17, 01:05 UTCJul 17, 01:20 UTC15m
2026-07-16 EPA6221 - Jul 16, 09:05 UTCJul 16, 09:15 UTC10m
2026-07-16 EPA6406 - Jul 16, 07:30 UTCJul 16, 07:40 UTC10m
2026-07-16 EPA6405 - Jul 16, 03:20 UTCJul 16, 03:35 UTC15m
2026-07-15 EPA6266 - Jul 15, 20:30 UTCJul 15, 20:40 UTC10m
2026-07-14 EPA6265 - Jul 14, 22:10 UTCJul 14, 22:20 UTC10m
2026-07-14 EPA6222 - Jul 14, 18:25 UTCJul 14, 18:35 UTC10m
2026-07-14 EPA6221 - Jul 14, 09:20 UTCJul 14, 09:35 UTC15m
2026-07-14 EPA6406 - Jul 14, 05:55 UTCJul 14, 06:10 UTC15m
2026-07-14 EPA6405 - Jul 14, 01:25 UTCJul 14, 01:35 UTC10m
2026-07-13 EPA6222 - Jul 13, 16:30 UTCJul 13, 16:50 UTC20m
2026-07-13 EPA6221 - Jul 13, 07:15 UTCJul 13, 07:25 UTC10m
2026-07-13 EPA6406 - Jul 13, 05:31 UTCJul 13, 05:40 UTC10m
2026-07-13 EPA6405 - Jul 13, 01:05 UTCJul 13, 01:20 UTC15m
2026-07-12 EPA6405 - Jul 12, 01:10 UTCJul 12, 01:20 UTC10m
2026-07-11 EPA6221 - Jul 11, 07:25 UTCJul 11, 07:35 UTC10m
2026-07-11 EPA6405 - Jul 11, 01:35 UTCJul 11, 01:50 UTC15m
2026-07-10 EPA6364 - Jul 10, 19:15 UTCJul 10, 19:35 UTC20m
2026-07-10 EPA6363 - Jul 10, 09:00 UTCJul 10, 09:10 UTC10m
2026-07-10 EPA6405 - Jul 10, 03:05 UTCJul 10, 03:15 UTC10m
2026-07-09 EPA6222 - Jul 9, 20:15 UTCJul 9, 20:25 UTC10m
2026-07-09 EPA6221 - Jul 9, 11:10 UTCJul 9, 11:20 UTC10m
2026-07-09 EPA6226 - Jul 9, 09:40 UTCJul 9, 10:00 UTC20m
2026-07-09 EPA6225 - Jul 9, 01:25 UTCJul 9, 02:15 UTC50m
2026-07-08 EPA6238 - Jul 8, 03:35 UTCJul 8, 14:30 UTC10h 55m
2026-07-07 EPA6226 - Jul 7, 08:15 UTCJul 7, 08:30 UTC15m
2026-07-06 EPA6266 - Jul 6, 22:25 UTCJul 6, 22:35 UTC10m
2026-07-05 EPA6265 SZX → KMG Jul 5, 22:00 UTCJul 5, 22:20 UTC20m
2026-07-05 EPA6266 - Jul 5, 18:30 UTCJul 5, 18:55 UTC25m
2026-07-04 EPA6265 SZX → KMG Jul 4, 22:10 UTCJul 4, 22:25 UTC15m
2026-07-04 EPA6284 - Jul 4, 15:40 UTCJul 4, 15:55 UTC15m
2026-07-04 EPA6283 - Jul 4, 03:20 UTCJul 4, 03:30 UTC10m
2026-07-02 EPA6265 SZX → KMG Jul 2, 22:10 UTCJul 2, 23:10 UTC1h 0m
2026-07-02 EPA6266 - Jul 2, 19:15 UTCJul 2, 19:25 UTC10m
2026-07-01 EPA6265 SZX → KMG Jul 1, 22:05 UTCJul 1, 23:00 UTC55m
2026-07-01 EPA6266 - Jul 1, 17:00 UTCJul 1, 17:10 UTC10m
2026-06-30 EPA6265 SZX → KMG Jun 30, 22:05 UTCJun 30, 23:05 UTC1h 0m
2026-06-30 EPA6266 - Jun 30, 19:00 UTCJun 30, 19:15 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-1533 page for operator, model, and routing details .

Mode-S 78104A frequently asked

What is Mode-S code 78104A?
78104A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1533.
Where is Mode-S 78104A registered?
Mode-S code 78104A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78104A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78104A, octal 36010112, decimal 7,868,490.
What flights does 78104A operate?
Mode-S 78104A has broadcast 20 distinct callsigns, including EPA6221, EPA6209, EPA6210, EPA6222, EPA6203.