Apparatus

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sensors Mode-S transponder

780531

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5137 · BOEING 737-800

Hex
780531
Octal
36002461
Decimal
7,865,649
Country
CN
Tail
B-5137
Type
B738
No current signal · last broadcast 18h ago
Flights observed
56
Distinct callsigns
8
Country
CN
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 780531.

Country allocation

The ICAO 24-bit address 780531 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 8 distinct

Callsign Airline Flights Last seen
LHA4204 Longhao Airlines 27 2026-06-02
LHA4203 Longhao Airlines 23 2026-06-02
LHA4218 - 1 2026-06-02
LHA4217 - 1 2026-06-02
LHA420W - 1 2026-05-21
LHA420V - 1 2026-05-21
LHA4116 Longhao Airlines 1 2026-04-23
LHA4115 - 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 LHA4218 - Jun 2, 12:10 UTCJun 2, 12:25 UTC15m
2026-06-02 LHA4217 - Jun 2, 10:30 UTCJun 2, 10:50 UTC20m
2026-06-02 LHA4204 ICN → WEH Jun 2, 05:00 UTCJun 2, 05:15 UTC15m
2026-06-02 LHA4203 WEH → ICN Jun 2, 03:15 UTCJun 2, 03:40 UTC25m
2026-05-30 LHA4204 ICN → WEH May 30, 04:55 UTCMay 30, 05:15 UTC20m
2026-05-30 LHA4203 WEH → ICN May 30, 03:05 UTCMay 30, 03:20 UTC15m
2026-05-29 LHA4204 ICN → WEH May 29, 05:15 UTCMay 29, 05:30 UTC15m
2026-05-29 LHA4203 WEH → ICN May 29, 02:55 UTCMay 29, 03:15 UTC20m
2026-05-28 LHA4204 ICN → WEH May 28, 05:05 UTCMay 28, 05:15 UTC10m
2026-05-28 LHA4203 WEH → ICN May 28, 03:25 UTCMay 28, 03:45 UTC20m
2026-05-27 LHA4204 ICN → WEH May 27, 05:04 UTCMay 27, 05:19 UTC15m
2026-05-27 LHA4203 WEH → ICN May 27, 02:54 UTCMay 27, 03:14 UTC20m
2026-05-26 LHA4204 ICN → WEH May 26, 05:20 UTCMay 26, 05:34 UTC15m
2026-05-26 LHA4203 WEH → ICN May 26, 03:09 UTCMay 26, 03:25 UTC15m
2026-05-25 LHA4204 ICN → WEH May 25, 05:10 UTCMay 25, 05:25 UTC15m
2026-05-25 LHA4203 WEH → ICN May 25, 03:15 UTCMay 25, 03:30 UTC15m
2026-05-24 LHA4204 ICN → WEH May 24, 04:10 UTCMay 24, 04:25 UTC15m
2026-05-24 LHA4203 WEH → ICN May 24, 02:25 UTCMay 24, 02:45 UTC20m
2026-05-23 LHA4204 ICN → WEH May 23, 04:55 UTCMay 23, 05:15 UTC20m
2026-05-23 LHA4203 WEH → ICN May 23, 02:55 UTCMay 23, 03:20 UTC25m
2026-05-22 LHA4204 ICN → WEH May 22, 09:15 UTCMay 22, 09:35 UTC20m
2026-05-22 LHA4204 ICN → WEH May 22, 09:00 UTCMay 22, 09:05 UTC5m
2026-05-22 LHA4203 WEH → ICN May 22, 07:30 UTCMay 22, 07:55 UTC25m
2026-05-21 LHA420V - May 21, 02:50 UTCMay 21, 03:10 UTC20m
2026-05-21 LHA420W - May 21, 00:30 UTCMay 21, 00:45 UTC15m
2026-05-19 LHA4204 ICN → WEH May 19, 10:50 UTCMay 19, 11:10 UTC20m
2026-05-19 LHA4203 WEH → ICN May 19, 08:40 UTCMay 19, 09:00 UTC20m
2026-05-18 LHA4204 ICN → WEH May 18, 04:51 UTCMay 18, 05:05 UTC15m
2026-05-18 LHA4203 WEH → ICN May 18, 02:55 UTCMay 18, 03:15 UTC20m
2026-05-17 LHA4204 ICN → WEH May 17, 04:50 UTCMay 17, 05:05 UTC15m
2026-05-17 LHA4203 WEH → ICN May 17, 02:40 UTCMay 17, 02:55 UTC15m
2026-05-15 LHA4204 ICN → WEH May 15, 05:05 UTCMay 15, 05:15 UTC10m
2026-05-15 LHA4203 WEH → ICN May 15, 02:55 UTCMay 15, 03:10 UTC15m
2026-05-14 LHA4204 ICN → WEH May 14, 05:00 UTCMay 14, 05:15 UTC15m
2026-05-14 LHA4203 WEH → ICN May 14, 03:10 UTCMay 14, 03:30 UTC20m
2026-05-13 LHA4204 ICN → WEH May 13, 05:20 UTCMay 13, 05:30 UTC10m
2026-05-12 LHA4204 ICN → WEH May 12, 06:45 UTCMay 12, 06:55 UTC10m
2026-05-11 LHA4204 ICN → WEH May 11, 05:00 UTCMay 11, 05:10 UTC10m
2026-05-11 LHA4203 WEH → ICN May 11, 02:45 UTCMay 11, 03:05 UTC20m
2026-05-10 LHA4204 ICN → WEH May 10, 06:30 UTCMay 10, 06:45 UTC15m
2026-05-09 LHA4204 ICN → WEH May 9, 05:00 UTCMay 9, 05:10 UTC10m
2026-05-09 LHA4203 WEH → ICN May 9, 03:05 UTCMay 9, 03:15 UTC10m
2026-05-08 LHA4203 WEH → ICN May 8, 03:19 UTCMay 8, 03:35 UTC15m
2026-05-07 LHA4204 ICN → WEH May 7, 05:30 UTCMay 7, 05:45 UTC15m
2026-05-06 LHA4204 ICN → WEH May 6, 05:00 UTCMay 6, 05:15 UTC15m
2026-05-04 LHA4203 WEH → ICN May 4, 02:45 UTCMay 4, 02:54 UTC10m
2026-05-03 LHA4204 ICN → WEH May 3, 04:30 UTCMay 3, 04:40 UTC10m
2026-05-03 LHA4203 WEH → ICN May 3, 02:50 UTCMay 3, 03:05 UTC15m
2026-05-01 LHA4204 ICN → WEH May 1, 05:35 UTCMay 1, 05:45 UTC10m
2026-05-01 LHA4203 WEH → ICN May 1, 03:25 UTCMay 1, 03:40 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-5137 page for operator, model, and routing details .

Mode-S 780531 frequently asked

What is Mode-S code 780531?
780531 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5137.
Where is Mode-S 780531 registered?
Mode-S code 780531 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780531 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780531, octal 36002461, decimal 7,865,649.
What flights does 780531 operate?
Mode-S 780531 has broadcast 8 distinct callsigns, including LHA4204, LHA4203, LHA4218, LHA4217, LHA420W.