Apparatus

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sensors Mode-S transponder

7BD01B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2851 · BOEING 757-200

Hex
7BD01B
Octal
36750033
Decimal
8,114,203
Country
CN
Tail
B-2851
Type
B752
No current signal · last broadcast 4h ago
Flights observed
45
Distinct callsigns
4
Country
CN
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 7BD01B.

Country allocation

The ICAO 24-bit address 7BD01B 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 4 distinct

Callsign Airline Flights Last seen
HYT9051 - 13 2026-06-04
HYT9052 YTO Cargo Ltd 12 2026-06-04
HYT9053 - 11 2026-05-30
HYT9054 - 9 2026-05-30

Recent flights last 45

DateFlightRouteTakeoffLandingDuration
2026-06-04 HYT9052 KUL → HGH Jun 4, 03:25 UTCJun 4, 03:50 UTC25m
2026-06-04 HYT9051 - Jun 4, 01:15 UTCJun 4, 01:45 UTC30m
2026-06-01 HYT9052 KUL → HGH Jun 1, 06:30 UTCJun 1, 06:50 UTC20m
2026-06-01 HYT9052 KUL → HGH Jun 1, 04:50 UTCJun 1, 05:15 UTC25m
2026-06-01 HYT9051 - Jun 1, 01:15 UTCJun 1, 01:45 UTC30m
2026-05-30 HYT9054 - May 30, 20:40 UTCMay 30, 21:05 UTC25m
2026-05-30 HYT9054 - May 30, 19:10 UTCMay 30, 20:10 UTC1h 0m
2026-05-30 HYT9053 - May 30, 15:55 UTCMay 30, 17:15 UTC1h 20m
2026-05-29 HYT9052 KUL → HGH May 29, 04:45 UTCMay 29, 05:10 UTC25m
2026-05-29 HYT9051 - May 29, 01:10 UTCMay 29, 01:35 UTC25m
2026-05-28 HYT9054 - May 28, 19:05 UTCMay 28, 20:25 UTC1h 20m
2026-05-28 HYT9053 ICN → MNL May 28, 03:50 UTCMay 28, 17:25 UTC13h 35m
2026-05-28 HYT9051 - May 28, 01:05 UTCMay 28, 01:35 UTC30m
2026-05-26 HYT9052 KUL → HGH May 26, 04:04 UTCMay 26, 04:30 UTC25m
2026-05-26 HYT9051 - May 26, 01:10 UTCMay 26, 01:40 UTC30m
2026-05-25 HYT9054 - May 25, 18:45 UTCMay 25, 20:34 UTC1h 49m
2026-05-25 HYT9053 ICN → MNL May 25, 04:05 UTCMay 25, 17:20 UTC13h 15m
2026-05-23 HYT9054 - May 23, 18:55 UTCMay 23, 20:30 UTC1h 35m
2026-05-23 HYT9053 - May 23, 15:55 UTCMay 23, 17:20 UTC1h 25m
2026-05-19 HYT9052 KUL → HGH May 19, 04:05 UTCMay 19, 04:30 UTC25m
2026-05-19 HYT9051 - May 19, 01:20 UTCMay 19, 02:00 UTC40m
2026-05-18 HYT9054 - May 18, 19:05 UTCMay 18, 20:45 UTC1h 40m
2026-05-18 HYT9053 - May 18, 15:55 UTCMay 18, 17:15 UTC1h 20m
2026-05-14 HYT9052 KUL → HGH May 14, 04:10 UTCMay 14, 04:51 UTC40m
2026-05-13 HYT9051 - May 13, 20:35 UTCMay 14, 01:35 UTC5h 0m
2026-05-13 HYT9054 - May 13, 18:45 UTCMay 13, 20:00 UTC1h 15m
2026-05-13 HYT9053 - May 13, 15:30 UTCMay 13, 17:20 UTC1h 50m
2026-05-11 HYT9052 KUL → HGH May 11, 04:10 UTCMay 11, 04:50 UTC40m
2026-05-11 HYT9051 - May 11, 00:54 UTCMay 11, 01:34 UTC40m
2026-05-05 HYT9052 KUL → HGH May 5, 03:30 UTCMay 5, 04:10 UTC40m
2026-05-04 HYT9051 - May 4, 19:15 UTCMay 5, 01:30 UTC6h 15m
2026-05-04 HYT9053 - May 4, 16:00 UTCMay 4, 17:20 UTC1h 20m
2026-04-29 HYT9052 KUL → HGH Apr 29, 03:45 UTCApr 29, 04:20 UTC35m
2026-04-29 HYT9051 - Apr 29, 00:45 UTCApr 29, 01:15 UTC30m
2026-04-27 HYT9054 - Apr 27, 19:25 UTCApr 27, 20:40 UTC1h 15m
2026-04-27 HYT9053 - Apr 27, 15:55 UTCApr 27, 17:25 UTC1h 30m
2026-04-25 HYT9054 - Apr 25, 19:10 UTCApr 25, 20:45 UTC1h 35m
2026-04-25 HYT9053 - Apr 25, 16:00 UTCApr 25, 17:25 UTC1h 25m
2026-04-24 HYT9053 - Apr 24, 19:10 UTCApr 25, 17:25 UTC22h 15m
2026-04-24 HYT9053 - Apr 24, 16:10 UTCApr 24, 17:45 UTC1h 35m
2026-04-20 HYT9052 KUL → HGH Apr 20, 03:40 UTCApr 20, 04:15 UTC35m
2026-04-20 HYT9051 - Apr 20, 01:10 UTCApr 20, 01:45 UTC35m
2026-04-17 HYT9052 KUL → HGH Apr 17, 04:05 UTCApr 17, 04:50 UTC46m
2026-04-17 HYT9051 - Apr 17, 01:20 UTCApr 17, 01:40 UTC20m
2026-04-17 HYT9051 - Apr 17, 01:00 UTCApr 17, 01:15 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-2851 page for operator, model, and routing details .

Mode-S 7BD01B frequently asked

What is Mode-S code 7BD01B?
7BD01B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2851.
Where is Mode-S 7BD01B registered?
Mode-S code 7BD01B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7BD01B broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7BD01B, octal 36750033, decimal 8,114,203.
What flights does 7BD01B operate?
Mode-S 7BD01B has broadcast 4 distinct callsigns, including HYT9051, HYT9052, HYT9053, HYT9054.