Apparatus

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sensors Mode-S transponder

781049

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1532 · BOEING 737-800

Hex
781049
Octal
36010111
Decimal
7,868,489
Country
CN
Tail
B-1532
Type
B738
No current signal · last broadcast Jul 26, 10:45 UTC
Flights observed
159
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 10:45 UTC

Last known position

Most recent position reported by Mode-S 781049.

Country allocation

The ICAO 24-bit address 781049 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
EPA6283 - 7 2026-06-23
EPA6268 - 7 2026-07-15
EPA6303 Shenzhen Donghai Airlines 6 2026-07-25
EPA6278 - 6 2026-06-29
EPA6238 - 6 2026-07-13
EPA6237 - 6 2026-06-29
EPA6224 - 6 2026-06-26
EPA6262 - 5 2026-06-23
EPA6248 - 5 2026-07-21
EPA6390 Shenzhen Donghai Airlines 4 2026-04-27
EPA6317 Shenzhen Donghai Airlines 4 2026-07-24
EPA6284 Shenzhen Donghai Airlines 4 2026-06-16
EPA6277 - 4 2026-06-25
EPA6267 - 4 2026-05-09
EPA6261 Shenzhen Donghai Airlines 4 2026-06-23
EPA6247 Shenzhen Donghai Airlines 4 2026-07-20
EPA6389 Shenzhen Donghai Airlines 3 2026-04-27
EPA6321 - 3 2026-07-17
EPA6315 Shenzhen Donghai Airlines 3 2026-07-26
EPA6310 Shenzhen Donghai Airlines 3 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EPA6315 ZUH → NTG Jul 26, 10:35 UTCJul 26, 10:45 UTC10m
2026-07-26 EPA6315 ZUH → NTG Jul 26, 09:25 UTCJul 26, 09:35 UTC10m
2026-07-25 EPA6303 ZUH → YIH Jul 25, 00:30 UTCJul 25, 00:45 UTC15m
2026-07-24 EPA6317 ZUH → SQD Jul 24, 06:10 UTCJul 24, 06:40 UTC30m
2026-07-23 EPA6221 - Jul 23, 07:10 UTCJul 23, 07:20 UTC10m
2026-07-23 EPA6405 SZX → KWE Jul 23, 01:20 UTCJul 23, 01:30 UTC10m
2026-07-22 EPA6216 SQD → SZX Jul 22, 15:55 UTCJul 22, 16:10 UTC15m
2026-07-21 EPA6209 - Jul 21, 14:05 UTCJul 21, 14:20 UTC15m
2026-07-21 EPA6248 - Jul 21, 12:30 UTCJul 21, 12:50 UTC20m
2026-07-20 EPA6247 CGO → ZHY Jul 20, 23:05 UTCJul 20, 23:15 UTC10m
2026-07-20 EPA6270 - Jul 20, 15:50 UTCJul 20, 16:10 UTC20m
2026-07-20 EPA6269 - Jul 20, 05:35 UTCJul 20, 05:45 UTC10m
2026-07-19 EPA6313 - Jul 19, 12:00 UTCJul 19, 12:10 UTC10m
2026-07-19 EPA6304 YIH → ZUH Jul 19, 09:45 UTCJul 19, 10:05 UTC20m
2026-07-19 EPA6303 - Jul 19, 00:30 UTCJul 19, 00:50 UTC20m
2026-07-18 EPA6305 - Jul 18, 08:15 UTCJul 18, 08:25 UTC10m
2026-07-18 EPA6314 - Jul 18, 06:05 UTCJul 18, 06:35 UTC30m
2026-07-17 EPA6257 SZX → NKG Jul 17, 23:50 UTCJul 18, 00:00 UTC10m
2026-07-17 EPA6218 - Jul 17, 17:25 UTCJul 17, 17:40 UTC15m
2026-07-17 EPA6321 - Jul 17, 12:50 UTCJul 17, 13:00 UTC10m
2026-07-17 EPA6217 - Jul 17, 02:10 UTCJul 17, 02:34 UTC25m
2026-07-16 EPA6258 - Jul 16, 18:00 UTCJul 16, 18:19 UTC20m
2026-07-16 EPA6313 - Jul 16, 13:05 UTCJul 16, 13:15 UTC10m
2026-07-16 EPA6303 - Jul 16, 01:45 UTCJul 16, 02:00 UTC15m
2026-07-15 EPA6317 - Jul 15, 09:45 UTCJul 15, 10:00 UTC15m
2026-07-15 EPA6268 - Jul 15, 05:30 UTCJul 15, 05:45 UTC15m
2026-07-15 EPA6268 - Jul 15, 04:20 UTCJul 15, 04:55 UTC35m
2026-07-15 EPA6268 - Jul 15, 01:40 UTCJul 15, 02:00 UTC20m
2026-07-14 EPA6248 - Jul 14, 10:00 UTCJul 14, 10:15 UTC15m
2026-07-13 EPA6247 - Jul 13, 23:30 UTCJul 13, 23:40 UTC10m
2026-07-13 EPA6238 - Jul 13, 14:00 UTCJul 13, 14:40 UTC40m
2026-07-07 EPA6328 - Jul 7, 07:45 UTCJul 7, 07:55 UTC10m
2026-06-29 EPA6237 - Jun 29, 02:20 UTCJun 29, 02:30 UTC10m
2026-06-29 EPA6278 - Jun 29, 00:29 UTCJun 29, 00:44 UTC15m
2026-06-28 EPA6239 - Jun 28, 02:20 UTCJun 28, 03:14 UTC55m
2026-06-27 EPA6321 - Jun 27, 11:04 UTCJun 27, 11:20 UTC15m
2026-06-27 EPA6217 - Jun 27, 00:50 UTCJun 27, 01:00 UTC10m
2026-06-26 EPA6224 - Jun 26, 18:15 UTCJun 26, 18:29 UTC15m
2026-06-26 EPA6224 - Jun 26, 06:29 UTCJun 26, 10:50 UTC4h 20m
2026-06-26 EPA6278 - Jun 26, 00:24 UTCJun 26, 00:35 UTC10m
2026-06-25 EPA6277 - Jun 25, 18:50 UTCJun 25, 19:05 UTC15m
2026-06-25 EPA6256 ZYI → SZX Jun 25, 16:50 UTCJun 25, 16:59 UTC10m
2026-06-25 EPA6255 - Jun 25, 03:15 UTCJun 25, 03:29 UTC15m
2026-06-24 EPA6224 - Jun 24, 15:24 UTCJun 24, 15:39 UTC15m
2026-06-24 EPA6224 - Jun 24, 06:59 UTCJun 24, 11:45 UTC4h 45m
2026-06-24 EPA6223 - Jun 24, 02:24 UTCJun 24, 02:34 UTC10m
2026-06-23 EPA6262 - Jun 23, 23:50 UTCJun 24, 00:05 UTC15m
2026-06-23 EPA6261 SZX → HAK Jun 23, 15:30 UTCJun 23, 15:40 UTC10m
2026-06-23 EPA6283 - Jun 23, 04:35 UTCJun 23, 04:45 UTC10m
2026-06-23 EPA6268 - Jun 23, 03:04 UTCJun 23, 03:15 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-1532 page for operator, model, and routing details .

Mode-S 781049 frequently asked

What is Mode-S code 781049?
781049 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1532.
Where is Mode-S 781049 registered?
Mode-S code 781049 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781049 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 10:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781049, octal 36010111, decimal 7,868,489.
What flights does 781049 operate?
Mode-S 781049 has broadcast 20 distinct callsigns, including EPA6283, EPA6268, EPA6303, EPA6278, EPA6238.