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 5h ago
Flights observed
86
Distinct callsigns
20
Country
CN
Last broadcast
5h 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 Hainan Airlines 8 2026-06-02
CHH7926 Hainan Airlines 7 2026-06-02
CHH446 Hainan Airlines 6 2026-05-01
CHH445 Hainan Airlines 6 2026-04-30
CHH798 Hainan Airlines 4 2026-04-29
CHH775 Hainan Airlines 4 2026-05-01
CHH797 Hainan Airlines 3 2026-04-29
CHH7701 Hainan Airlines 3 2026-05-19
CHH7973 Hainan Airlines 2 2026-04-18
CHH7964 Hainan Airlines 2 2026-04-20
CHH786 Hainan Airlines 2 2026-05-29
CHH785 Hainan Airlines 2 2026-05-28
CHH776 Hainan Airlines 2 2026-05-02
CHH7715 Hainan Airlines 2 2026-05-06
CHH7708 Hainan Airlines 2 2026-05-10
CHH7707 Hainan Airlines 2 2026-05-20
CHH758 Hainan Airlines 2 2026-05-08
CHH757 Hainan Airlines 2 2026-05-08
CHH7396 Hainan Airlines 2 2026-05-30
CHH7395 Hainan Airlines 2 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CHH7926 TIJ → PEK Jun 2, 13:40 UTCJun 2, 19:20 UTC5h 40m
2026-06-02 CHH7926 TIJ → PEK Jun 2, 08:45 UTCJun 2, 11:45 UTC3h 0m
2026-06-02 CHH7925 PEK → TIJ Jun 2, 07:00 UTCJun 2, 07:10 UTC10m
2026-06-02 CHH7925 PEK → TIJ Jun 2, 04:20 UTCJun 2, 05:25 UTC1h 5m
2026-06-01 CHH7925 PEK → TIJ Jun 1, 18:50 UTCJun 2, 00:45 UTC5h 55m
2026-05-31 CHH7712 SZX → PEK May 31, 10:35 UTCMay 31, 10:45 UTC10m
2026-05-31 CHH7393 SZX → HGH May 31, 00:05 UTCMay 31, 00:15 UTC10m
2026-05-30 CHH7396 HGH → SZX May 30, 12:25 UTCMay 30, 13:15 UTC50m
2026-05-30 CHH7395 SZX → HGH May 30, 06:30 UTCMay 30, 06:40 UTC10m
2026-05-29 CHH786 AKL → HAK May 29, 17:55 UTCMay 30, 00:00 UTC6h 5m
2026-05-29 CHH786 AKL → HAK May 29, 08:50 UTCMay 29, 13:00 UTC4h 10m
2026-05-28 CHH785 HAK → AKL May 28, 19:30 UTCMay 29, 05:35 UTC10h 5m
2026-05-28 CHH785 HAK → AKL May 28, 15:30 UTCMay 28, 15:40 UTC10m
2026-05-27 CHH728 MAD → CKG May 27, 09:30 UTCMay 27, 14:40 UTC5h 10m
2026-05-26 CHH727 CKG → MAD May 26, 22:15 UTCMay 27, 06:34 UTC8h 20m
2026-05-26 CHH727 CKG → MAD May 26, 09:49 UTCMay 27, 06:34 UTC20h 45m
2026-05-25 CHH7926 TIJ → PEK May 25, 14:05 UTCMay 25, 20:09 UTC6h 4m
2026-05-25 CHH7926 TIJ → PEK May 25, 11:25 UTCMay 25, 12:15 UTC50m
2026-05-25 CHH7926 TIJ → PEK May 25, 09:00 UTCMay 25, 09:10 UTC10m
2026-05-25 CHH7925 PEK → TIJ May 25, 07:15 UTCMay 25, 07:25 UTC10m
2026-05-25 CHH7925 PEK → TIJ May 25, 04:50 UTCMay 25, 05:15 UTC25m
2026-05-24 CHH7925 PEK → TIJ May 24, 18:50 UTCMay 24, 23:46 UTC4h 56m
2026-05-21 CHH7805 PEK → CAN May 21, 02:45 UTCMay 21, 03:05 UTC20m
2026-05-20 CHH7707 PEK → SZX May 20, 08:45 UTCMay 20, 08:55 UTC10m
2026-05-20 CHH7707 PEK → SZX May 20, 06:05 UTCMay 20, 06:20 UTC15m
2026-05-20 CHH7704 SZX → PEK May 20, 01:35 UTCMay 20, 01:50 UTC15m
2026-05-19 CHH7396 HGH → SZX May 19, 13:00 UTCMay 19, 13:25 UTC25m
2026-05-19 CHH7395 SZX → HGH May 19, 06:40 UTCMay 19, 06:50 UTC10m
2026-05-19 CHH7701 PEK → SZX May 19, 03:20 UTCMay 19, 03:35 UTC15m
2026-05-19 CHH7701 PEK → SZX May 19, 00:50 UTCMay 19, 01:10 UTC20m
2026-05-18 CHH490 BER → PEK May 18, 20:15 UTCMay 18, 20:35 UTC20m
2026-05-18 CHH490 BER → PEK May 18, 12:10 UTCMay 18, 17:45 UTC5h 35m
2026-05-18 CHH489 PEK → BER May 18, 04:11 UTCMay 18, 04:30 UTC20m
2026-05-17 CHH489 PEK → BER May 17, 19:20 UTCMay 18, 02:10 UTC6h 50m
2026-05-15 CHH7926 TIJ → PEK May 15, 15:10 UTCMay 15, 21:20 UTC6h 10m
2026-05-15 CHH7926 TIJ → PEK May 15, 10:55 UTCMay 15, 11:10 UTC15m
2026-05-15 CHH7925 PEK → TIJ May 15, 08:05 UTCMay 15, 08:10 UTC5m
2026-05-15 CHH7925 PEK → TIJ May 15, 00:10 UTCMay 15, 07:25 UTC7h 15m
2026-05-10 CHH7708 SZX → PEK May 10, 08:20 UTCMay 10, 08:30 UTC10m
2026-05-08 CHH758 CDG → SZX May 8, 20:40 UTCMay 8, 20:50 UTC10m
2026-05-08 CHH758 CDG → SZX May 8, 09:34 UTCMay 8, 16:00 UTC6h 25m
2026-05-08 CHH757 SZX → CDG May 8, 00:34 UTCMay 8, 06:14 UTC5h 40m
2026-05-07 CHH757 SZX → CDG May 7, 17:50 UTCMay 7, 18:00 UTC10m
2026-05-06 CHH7157 SZX → CKG May 6, 23:20 UTCMay 6, 23:35 UTC15m
2026-05-06 CHH7715 SZX → TNA May 6, 16:10 UTCMay 6, 16:35 UTC25m
2026-05-06 CHH7715 SZX → TNA May 6, 13:45 UTCMay 6, 14:05 UTC20m
2026-05-06 CHH7801 PEK → CAN May 6, 00:46 UTCMay 6, 01:10 UTC25m
2026-05-05 CHH7381 HAK → PEK May 5, 14:15 UTCMay 5, 14:25 UTC10m
2026-05-04 CHH7052 HGH → HAK May 4, 01:10 UTCMay 4, 06:50 UTC5h 40m
2026-05-02 CHH776 SYD → HAK May 2, 11:15 UTCMay 2, 18:50 UTC7h 35m

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 5h 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, CHH798.