Apparatus

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sensors Mode-S transponder

78105B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1540 · BOEING 787-9 Dreamliner

Hex
78105B
Octal
36010133
Decimal
7,868,507
Country
CN
Tail
B-1540
Type
B789
No current signal · last broadcast 3h ago
Flights observed
170
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 78105B.

Country allocation

The ICAO 24-bit address 78105B 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
CHH7925 - 13 2026-07-14
CHH7926 - 11 2026-07-14
CHH446 Hainan Airlines 6 2026-05-01
CHH445 Hainan Airlines 6 2026-04-30
CHH7711 Hainan Airlines 5 2026-06-09
CHH798 Hainan Airlines 4 2026-04-29
CHH7973 - 4 2026-07-07
CHH775 Hainan Airlines 4 2026-05-01
CHH7707 - 4 2026-06-24
CHH490 - 4 2026-06-21
CHH489 - 4 2026-06-20
CHH469 - 4 2026-07-15
CHH7974 - 3 2026-07-08
CHH797 Hainan Airlines 3 2026-04-29
CHH7969 - 3 2026-07-17
CHH7907 Hainan Airlines 3 2026-06-03
CHH7708 Hainan Airlines 3 2026-06-12
CHH7701 Hainan Airlines 3 2026-05-19
CHH7157 - 3 2026-07-08
CHH470 - 3 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CHH7969 - Jul 17, 22:49 UTCJul 17, 23:39 UTC50m
2026-07-17 CHH7714 - Jul 17, 12:50 UTCJul 17, 13:05 UTC15m
2026-07-17 CHH7025 - Jul 17, 10:40 UTCJul 17, 11:00 UTC20m
2026-07-17 CHH7024 - Jul 17, 06:29 UTCJul 17, 06:40 UTC10m
2026-07-17 CHH7158 - Jul 17, 04:44 UTCJul 17, 04:54 UTC10m
2026-07-16 CHH470 - Jul 16, 10:50 UTCJul 16, 16:44 UTC5h 55m
2026-07-15 CHH469 - Jul 15, 11:40 UTCJul 16, 05:10 UTC17h 30m
2026-07-14 CHH7926 - Jul 14, 19:20 UTCJul 15, 01:00 UTC5h 39m
2026-07-14 CHH7926 - Jul 14, 13:00 UTCJul 14, 15:45 UTC2h 45m
2026-07-14 CHH7925 - Jul 14, 07:25 UTCJul 14, 07:35 UTC10m
2026-07-14 CHH7925 - Jul 14, 04:35 UTCJul 14, 05:45 UTC1h 10m
2026-07-13 CHH7925 - Jul 13, 18:40 UTCJul 14, 00:30 UTC5h 50m
2026-07-13 CHH7277 - Jul 13, 00:50 UTCJul 13, 01:01 UTC10m
2026-07-12 CHH408 - Jul 12, 19:55 UTCJul 12, 20:10 UTC15m
2026-07-12 CHH408 - Jul 12, 11:15 UTCJul 12, 17:35 UTC6h 20m
2026-07-12 CHH407 - Jul 12, 00:55 UTCJul 12, 07:35 UTC6h 40m
2026-07-11 CHH407 - Jul 11, 21:50 UTCJul 11, 22:05 UTC15m
2026-07-11 CHH7268 CKG → PEK Jul 11, 16:10 UTCJul 11, 16:35 UTC25m
2026-07-10 CHH428 - Jul 10, 11:05 UTCJul 10, 14:25 UTC3h 20m
2026-07-09 CHH427 - Jul 9, 22:45 UTCJul 10, 05:15 UTC6h 30m
2026-07-08 CHH7157 - Jul 8, 23:20 UTCJul 8, 23:30 UTC10m
2026-07-08 CHH7974 - Jul 8, 19:15 UTCJul 8, 19:40 UTC25m
2026-07-08 CHH7974 - Jul 8, 08:40 UTCJul 8, 12:20 UTC3h 40m
2026-07-07 CHH7973 - Jul 7, 23:15 UTCJul 8, 06:00 UTC6h 45m
2026-07-07 CHH7973 - Jul 7, 18:20 UTCJul 7, 18:30 UTC10m
2026-07-06 CHH470 - Jul 6, 10:55 UTCJul 6, 17:25 UTC6h 30m
2026-07-05 CHH469 - Jul 5, 22:40 UTCJul 6, 05:10 UTC6h 30m
2026-07-05 CHH7358 - Jul 5, 12:25 UTCJul 5, 12:35 UTC10m
2026-07-02 CHH470 - Jul 2, 11:50 UTCJul 2, 17:40 UTC5h 50m
2026-07-02 CHH469 - Jul 2, 04:45 UTCJul 2, 05:10 UTC25m
2026-07-01 CHH469 - Jul 1, 22:25 UTCJul 1, 22:50 UTC25m
2026-06-30 CHH428 - Jun 30, 11:10 UTCJun 30, 17:15 UTC6h 5m
2026-06-29 CHH427 - Jun 29, 11:25 UTCJun 30, 05:15 UTC17h 51m
2026-06-28 CHH7267 - Jun 28, 10:44 UTCJun 28, 11:09 UTC25m
2026-06-28 CHH7808 - Jun 28, 08:25 UTCJun 28, 08:39 UTC15m
2026-06-28 CHH7801 - Jun 28, 00:50 UTCJun 28, 01:04 UTC15m
2026-06-26 CHH730 - Jun 26, 23:25 UTCJun 27, 14:00 UTC14h 35m
2026-06-26 CHH729 - Jun 26, 06:25 UTCJun 26, 19:50 UTC13h 25m
2026-06-26 CHH729 - Jun 26, 05:24 UTCJun 26, 05:39 UTC15m
2026-06-25 CHH7702 - Jun 25, 23:34 UTCJun 25, 23:44 UTC10m
2026-06-25 CHH438 - Jun 25, 09:50 UTCJun 25, 13:09 UTC3h 20m
2026-06-24 CHH437 - Jun 24, 22:49 UTCJun 25, 05:29 UTC6h 40m
2026-06-24 CHH437 - Jun 24, 17:55 UTCJun 24, 18:05 UTC10m
2026-06-24 CHH7707 - Jun 24, 08:04 UTCJun 24, 08:24 UTC20m
2026-06-24 CHH7707 - Jun 24, 05:44 UTCJun 24, 05:59 UTC15m
2026-06-23 CHH7926 - Jun 23, 13:50 UTCJun 23, 19:34 UTC5h 45m
2026-06-23 CHH7926 - Jun 23, 09:45 UTCJun 23, 12:25 UTC2h 40m
2026-06-23 CHH7925 - Jun 23, 05:15 UTCJun 23, 06:24 UTC1h 10m
2026-06-22 CHH7925 - Jun 22, 19:29 UTCJun 23, 01:30 UTC6h 0m
2026-06-22 CHH7146 - Jun 22, 09:00 UTCJun 22, 09:19 UTC20m

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-1540 page for operator, model, and routing details .

Mode-S 78105B frequently asked

What is Mode-S code 78105B?
78105B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1540.
Where is Mode-S 78105B registered?
Mode-S code 78105B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78105B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78105B, octal 36010133, decimal 7,868,507.
What flights does 78105B operate?
Mode-S 78105B has broadcast 20 distinct callsigns, including CHH7925, CHH7926, CHH446, CHH445, CHH7711.