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 7h ago
Flights observed
130
Distinct callsigns
20
Country
CN
Last broadcast
7h ago

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
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
EPA6390 Shenzhen Donghai Airlines 4 2026-04-27
EPA6284 Shenzhen Donghai Airlines 4 2026-06-16
EPA6277 - 4 2026-06-25
EPA6268 - 4 2026-06-23
EPA6267 - 4 2026-05-09
EPA6261 Shenzhen Donghai Airlines 4 2026-06-23
EPA6389 Shenzhen Donghai Airlines 3 2026-04-27
EPA6310 Shenzhen Donghai Airlines 3 2026-05-02
EPA6309 Shenzhen Donghai Airlines 3 2026-05-02
EPA6303 Shenzhen Donghai Airlines 3 2026-05-01
EPA6256 Shenzhen Donghai Airlines 3 2026-06-25
EPA6255 - 3 2026-06-25
EPA6248 Shenzhen Donghai Airlines 3 2026-05-09
EPA6247 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-22 EPA6254 - Jun 22, 09:49 UTCJun 22, 10:00 UTC10m
2026-06-21 EPA6253 - Jun 21, 23:24 UTCJun 21, 23:34 UTC10m
2026-06-21 EPA6238 NTG → SZX Jun 21, 13:44 UTCJun 21, 14:59 UTC1h 15m
2026-06-21 EPA6237 - Jun 21, 02:04 UTCJun 21, 02:15 UTC10m
2026-06-20 EPA6262 - Jun 20, 23:45 UTCJun 20, 23:59 UTC15m
2026-06-20 EPA6261 SZX → HAK Jun 20, 14:29 UTCJun 20, 14:39 UTC10m
2026-06-20 EPA6210 - Jun 20, 04:04 UTCJun 20, 04:24 UTC20m
2026-06-19 EPA6209 - Jun 19, 11:54 UTCJun 19, 12:04 UTC10m
2026-06-19 EPA6242 - Jun 19, 10:14 UTCJun 19, 10:39 UTC25m
2026-06-18 EPA6241 - Jun 18, 22:55 UTCJun 18, 23:05 UTC10m
2026-06-18 EPA6256 ZYI → SZX Jun 18, 21:10 UTCJun 18, 21:35 UTC25m
2026-06-18 EPA6255 - Jun 18, 05:50 UTCJun 18, 06:00 UTC10m
2026-06-17 EPA6238 NTG → SZX Jun 17, 14:40 UTCJun 17, 15:00 UTC20m
2026-06-17 EPA6237 - Jun 17, 02:40 UTCJun 17, 02:50 UTC10m
2026-06-16 EPA6262 - Jun 16, 23:40 UTCJun 16, 23:55 UTC15m
2026-06-16 EPA6261 SZX → HAK Jun 16, 17:10 UTCJun 16, 17:24 UTC15m
2026-06-16 EPA6284 SHS → SZX Jun 16, 15:30 UTCJun 16, 15:45 UTC15m
2026-06-16 EPA6283 - Jun 16, 04:45 UTCJun 16, 04:55 UTC10m
2026-06-15 EPA6262 - Jun 15, 23:45 UTCJun 16, 00:00 UTC15m
2026-06-15 EPA6259 SZX → HAK Jun 15, 21:04 UTCJun 15, 21:20 UTC15m
2026-06-15 EPA6238 NTG → SZX Jun 15, 19:20 UTCJun 15, 19:39 UTC20m
2026-06-15 EPA6328 CSX → NTG Jun 15, 07:25 UTCJun 15, 07:40 UTC15m
2026-06-15 EPA6327 CSX → HAK Jun 15, 04:34 UTCJun 15, 04:45 UTC10m
2026-06-05 EPA6299 NTG → CSX Jun 5, 09:00 UTCJun 5, 09:15 UTC15m
2026-05-27 EPA6237 SZX → NTG May 27, 02:29 UTCMay 27, 02:39 UTC10m
2026-05-26 EPA6262 HAK → SZX May 26, 23:29 UTCMay 26, 23:45 UTC15m
2026-05-26 EPA6261 SZX → HAK May 26, 14:20 UTCMay 26, 14:35 UTC15m
2026-05-26 EPA6230 SHE → HSN May 26, 12:40 UTCMay 26, 13:04 UTC25m
2026-05-26 EPA6229 SZX → HSN May 26, 00:09 UTCMay 26, 00:19 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 7h ago.
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, EPA6278, EPA6238, EPA6237, EPA6224.