Apparatus

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sensors Mode-S transponder

78123E

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-7300 · BOEING 737-800

Hex
78123E
Octal
36011076
Decimal
7,868,990
Country
CN
Tail
B-7300
Type
B738
No current signal · last broadcast 1h ago
Flights observed
43
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 78123E.

Country allocation

The ICAO 24-bit address 78123E 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
EPA6303 Shenzhen Donghai Airlines 5 2026-04-25
EPA6386 - 4 2026-04-25
EPA6385 - 4 2026-04-25
EPA6315 Shenzhen Donghai Airlines 4 2026-04-27
EPA6390 Shenzhen Donghai Airlines 3 2026-04-22
EPA6389 Shenzhen Donghai Airlines 3 2026-04-22
EPA6383 Shenzhen Donghai Airlines 3 2026-04-24
EPA6317 Shenzhen Donghai Airlines 3 2026-04-22
EPA6316 Shenzhen Donghai Airlines 2 2026-04-26
EPA6384 Shenzhen Donghai Airlines 1 2026-04-16
EPA6327 Shenzhen Donghai Airlines 1 2026-05-30
EPA6322 - 1 2026-04-14
EPA6318 Shenzhen Donghai Airlines 1 2026-04-22
EPA6310 Shenzhen Donghai Airlines 1 2026-04-23
EPA6309 Shenzhen Donghai Airlines 1 2026-04-23
EPA6306 - 1 2026-04-16
EPA6305 Shenzhen Donghai Airlines 1 2026-04-16
EPA6304 Shenzhen Donghai Airlines 1 2026-04-24
EPA6299 Shenzhen Donghai Airlines 1 2026-05-29
EPA6238 - 1 2026-04-13

Recent flights last 43

DateFlightRouteTakeoffLandingDuration
2026-05-30 EPA6327 CSX → HAK May 30, 04:30 UTCMay 30, 04:45 UTC15m
2026-05-29 EPA6299 NTG → CSX May 29, 09:10 UTCMay 29, 10:00 UTC50m
2026-04-27 EPA6315 ZUH → NTG Apr 27, 02:15 UTCApr 27, 02:25 UTC10m
2026-04-26 EPA6316 HET → NTG Apr 26, 13:45 UTCApr 26, 14:05 UTC20m
2026-04-26 EPA6315 ZUH → NTG Apr 26, 02:15 UTCApr 26, 02:25 UTC10m
2026-04-25 EPA6386 - Apr 25, 14:40 UTCApr 25, 15:00 UTC20m
2026-04-25 EPA6385 - Apr 25, 11:50 UTCApr 25, 12:10 UTC20m
2026-04-25 EPA6303 ZUH → YIH Apr 25, 00:15 UTCApr 25, 00:25 UTC10m
2026-04-24 EPA6383 ZUH → CGO Apr 24, 11:45 UTCApr 24, 11:55 UTC10m
2026-04-24 EPA6304 YIH → ZUH Apr 24, 10:20 UTCApr 24, 10:30 UTC10m
2026-04-24 EPA6303 ZUH → YIH Apr 24, 00:25 UTCApr 24, 00:35 UTC10m
2026-04-23 EPA6310 NTG → ZUH Apr 23, 14:35 UTCApr 23, 15:00 UTC25m
2026-04-23 EPA6309 ZUH → NTG Apr 23, 03:40 UTCApr 23, 04:00 UTC20m
2026-04-22 EPA6318 SQD → ZUH Apr 22, 15:50 UTCApr 22, 16:15 UTC25m
2026-04-22 EPA6317 ZUH → SQD Apr 22, 07:40 UTCApr 22, 07:55 UTC15m
2026-04-22 EPA6390 NGB → ZUH Apr 22, 06:05 UTCApr 22, 06:30 UTC25m
2026-04-22 EPA6389 ZUH → NGB Apr 22, 01:20 UTCApr 22, 05:30 UTC4h 10m
2026-04-22 EPA6389 ZUH → NGB Apr 22, 00:35 UTCApr 22, 00:45 UTC10m
2026-04-21 EPA6386 - Apr 21, 15:10 UTCApr 21, 15:31 UTC20m
2026-04-21 EPA6385 - Apr 21, 12:15 UTCApr 21, 12:30 UTC15m
2026-04-21 EPA6303 ZUH → YIH Apr 21, 00:10 UTCApr 21, 00:20 UTC10m
2026-04-20 EPA6316 - Apr 20, 13:45 UTCApr 20, 14:05 UTC20m
2026-04-20 EPA6315 ZUH → NTG Apr 20, 03:20 UTCApr 20, 03:30 UTC10m
2026-04-20 EPA6315 ZUH → NTG Apr 20, 02:25 UTCApr 20, 02:35 UTC10m
2026-04-19 EPA6317 ZUH → SQD Apr 19, 06:45 UTCApr 19, 06:55 UTC10m
2026-04-19 EPA6390 NGB → ZUH Apr 19, 05:00 UTCApr 19, 05:25 UTC25m
2026-04-18 EPA6386 - Apr 18, 15:15 UTCApr 18, 15:35 UTC20m
2026-04-18 EPA6385 - Apr 18, 12:10 UTCApr 18, 12:20 UTC10m
2026-04-18 EPA6303 ZUH → YIH Apr 18, 00:15 UTCApr 18, 00:25 UTC10m
2026-04-17 EPA6383 ZUH → CGO Apr 17, 13:35 UTCApr 17, 13:45 UTC10m
2026-04-17 EPA6303 ZUH → YIH Apr 17, 00:20 UTCApr 17, 00:35 UTC15m
2026-04-16 EPA6306 - Apr 16, 15:35 UTCApr 16, 15:55 UTC20m
2026-04-16 EPA6305 ZUH → SHS Apr 16, 06:20 UTCApr 16, 06:34 UTC15m
2026-04-16 EPA6384 CGO → ZUH Apr 16, 04:49 UTCApr 16, 05:05 UTC15m
2026-04-15 EPA6383 ZUH → CGO Apr 15, 23:45 UTCApr 15, 23:55 UTC10m
2026-04-15 EPA6317 ZUH → SQD Apr 15, 06:15 UTCApr 15, 06:30 UTC15m
2026-04-15 EPA6390 NGB → ZUH Apr 15, 04:35 UTCApr 15, 04:50 UTC15m
2026-04-15 EPA6389 ZUH → NGB Apr 15, 00:05 UTCApr 15, 00:15 UTC10m
2026-04-14 EPA6386 - Apr 14, 14:20 UTCApr 14, 14:35 UTC15m
2026-04-14 EPA6385 - Apr 14, 11:35 UTCApr 14, 11:50 UTC15m
2026-04-14 EPA6322 - Apr 14, 05:15 UTCApr 14, 06:05 UTC50m
2026-04-13 EPA6238 - Apr 13, 14:25 UTCApr 13, 14:50 UTC25m
2026-04-13 EPA6237 SZX → NTG Apr 13, 02:10 UTCApr 13, 02:20 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-7300 page for operator, model, and routing details .

Mode-S 78123E frequently asked

What is Mode-S code 78123E?
78123E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-7300.
Where is Mode-S 78123E registered?
Mode-S code 78123E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78123E broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78123E, octal 36011076, decimal 7,868,990.
What flights does 78123E operate?
Mode-S 78123E has broadcast 20 distinct callsigns, including EPA6303, EPA6386, EPA6385, EPA6315, EPA6390.