sensors Mode-S transponder

78105A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1539 · BOEING 787-9 Dreamliner

Hex
78105A
Octal
36010132
Decimal
7,868,506
Country
CN
Tail
B-1539
Type
B789
No current signal · last broadcast 10h ago
Flights observed
100
Distinct callsigns
20
Country
CN
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 78105A.

Country allocation

The ICAO 24-bit address 78105A 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CHH7926 TIJ → PEK May 29, 13:35 UTCMay 29, 19:20 UTC5h 46m
2026-05-29 CHH7926 TIJ → PEK May 29, 10:40 UTCMay 29, 11:35 UTC55m
2026-05-29 CHH7926 TIJ → PEK May 29, 08:30 UTCMay 29, 08:40 UTC10m
2026-05-29 CHH7925 PEK → TIJ May 29, 06:55 UTCMay 29, 07:05 UTC10m
2026-05-29 CHH7925 PEK → TIJ May 29, 04:30 UTCMay 29, 04:55 UTC25m
2026-05-28 CHH7925 PEK → TIJ May 28, 18:40 UTCMay 29, 00:35 UTC5h 55m
2026-05-27 CHH7926 TIJ → PEK May 27, 13:45 UTCMay 27, 19:40 UTC5h 55m
2026-05-27 CHH7926 TIJ → PEK May 27, 08:10 UTCMay 27, 11:20 UTC3h 10m
2026-05-27 CHH7925 PEK → TIJ May 27, 05:19 UTCMay 27, 05:29 UTC10m
2026-05-27 CHH7925 PEK → TIJ May 27, 02:44 UTCMay 27, 03:09 UTC25m
2026-05-26 CHH7925 PEK → TIJ May 26, 18:05 UTCMay 26, 23:29 UTC5h 25m
2026-05-26 CHH7925 PEK → TIJ May 26, 12:14 UTCMay 26, 12:24 UTC10m
2026-05-25 CHH492 BRU → PEK May 25, 20:09 UTCMay 25, 20:24 UTC15m
2026-05-25 CHH492 BRU → PEK May 25, 11:40 UTCMay 25, 17:40 UTC6h 0m
2026-05-25 CHH491 PEK → BRU May 25, 03:45 UTCMay 25, 04:35 UTC50m
2026-05-24 CHH491 PEK → BRU May 24, 05:00 UTCMay 25, 04:30 UTC23h 30m
2026-05-23 CHH496 SEA → PEK May 23, 18:35 UTCMay 24, 05:30 UTC10h 55m
2026-05-23 CHH495 PEK → SEA May 23, 06:05 UTCMay 23, 15:05 UTC9h 0m
2026-05-22 CHH495 PEK → SEA May 22, 17:10 UTCMay 23, 15:05 UTC21h 54m
2026-05-22 CHH492 BRU → PEK May 22, 12:35 UTCMay 23, 07:55 UTC19h 19m
2026-05-22 CHH492 BRU → PEK May 22, 11:45 UTCMay 23, 07:55 UTC20h 9m
2026-05-21 CHH491 PEK → BRU May 21, 21:50 UTCMay 22, 04:20 UTC6h 30m
2026-05-21 CHH7237 PEK → XIY May 21, 03:20 UTCMay 21, 03:35 UTC15m
2026-05-19 CHH7703 PEK → SZX May 19, 01:55 UTCMay 19, 02:05 UTC10m
2026-05-17 CHH7926 TIJ → PEK May 17, 15:20 UTCMay 17, 21:35 UTC6h 15m
2026-05-17 CHH7926 TIJ → PEK May 17, 11:10 UTCMay 17, 11:20 UTC10m
2026-05-17 CHH7925 PEK → TIJ May 17, 00:25 UTCMay 17, 07:20 UTC6h 55m
2026-05-14 CHH7926 TIJ → PEK May 14, 15:15 UTCMay 14, 21:10 UTC5h 55m
2026-05-14 CHH7926 TIJ → PEK May 14, 11:05 UTCMay 14, 11:15 UTC10m
2026-05-14 CHH7925 PEK → TIJ May 14, 01:00 UTCMay 14, 08:00 UTC7h 0m
2026-05-12 CHH472 CAI → SZX May 12, 11:40 UTCMay 12, 16:55 UTC5h 15m
2026-05-12 CHH471 SZX → CAI May 12, 02:50 UTCMay 12, 05:15 UTC2h 25m
2026-05-10 CHH490 BER → PEK May 10, 12:05 UTCMay 10, 17:30 UTC5h 25m
2026-05-10 CHH489 PEK → BER May 10, 04:29 UTCMay 10, 04:50 UTC20m
2026-05-09 CHH489 PEK → BER May 9, 22:49 UTCMay 10, 02:10 UTC3h 20m
2026-05-07 CHH7926 TIJ → PEK May 7, 15:20 UTCMay 7, 21:25 UTC6h 5m
2026-05-07 CHH7926 TIJ → PEK May 7, 10:55 UTCMay 7, 11:05 UTC10m
2026-05-07 CHH7925 PEK → TIJ May 7, 08:00 UTCMay 7, 08:10 UTC10m
2026-05-07 CHH7925 PEK → TIJ May 7, 00:20 UTCMay 7, 07:15 UTC6h 55m
2026-05-06 CHH7709 PEK → SZX May 6, 10:20 UTCMay 6, 10:30 UTC10m
2026-05-06 CHH7709 PEK → SZX May 6, 07:50 UTCMay 6, 08:05 UTC15m
2026-05-05 CHH7926 TIJ → PEK May 5, 15:15 UTCMay 5, 21:10 UTC5h 55m
2026-05-05 CHH7926 TIJ → PEK May 5, 11:05 UTCMay 5, 11:15 UTC10m
2026-05-05 CHH7925 PEK → TIJ May 5, 08:20 UTCMay 5, 08:30 UTC10m
2026-05-05 CHH7925 PEK → TIJ May 5, 00:20 UTCMay 5, 07:35 UTC7h 15m
2026-05-04 CHH7707 PEK → SZX May 4, 05:55 UTCMay 4, 06:05 UTC10m
2026-05-03 CHH438 FCO → SZX May 3, 09:45 UTCMay 3, 13:20 UTC3h 35m
2026-05-03 CHH437 SZX → FCO May 3, 02:40 UTCMay 3, 06:30 UTC3h 49m
2026-05-02 CHH437 SZX → FCO May 2, 18:15 UTCMay 2, 18:25 UTC10m
2026-05-01 CHH7157 SZX → CKG May 1, 23:25 UTCMay 1, 23:35 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-1539 page for operator, model, and routing details .

Mode-S 78105A frequently asked

What is Mode-S code 78105A?
78105A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1539.
Where is Mode-S 78105A registered?
Mode-S code 78105A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78105A broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78105A, octal 36010132, decimal 7,868,506.
What flights does 78105A operate?
Mode-S 78105A has broadcast 20 distinct callsigns, including CHH7926, CHH7925, CHH492, CHH491, CHH489.