Apparatus

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sensors Mode-S transponder

78141F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1138 · BOEING 787-9 Dreamliner

Hex
78141F
Octal
36012037
Decimal
7,869,471
Country
CN
Tail
B-1138
Type
B789
No current signal · last broadcast 2d ago
Flights observed
128
Distinct callsigns
20
Country
CN
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 78141F.

Country allocation

The ICAO 24-bit address 78141F 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
CHH492 - 9 2026-06-30
CHH490 Hainan Airlines 6 2026-06-11
CHH7932 - 5 2026-07-02
CHH489 Hainan Airlines 5 2026-06-11
CHH7973 Hainan Airlines 4 2026-06-12
CHH7931 - 4 2026-07-01
CHH491 - 4 2026-06-29
CHH797 Hainan Airlines 3 2026-05-06
CHH7964 Hainan Airlines 3 2026-05-29
CHH7701 - 3 2026-07-01
CHH751 - 3 2026-06-19
CHH717 Hainan Airlines 3 2026-06-01
CHH446 Hainan Airlines 3 2026-05-08
CHH445 Hainan Airlines 3 2026-05-07
CHH428 - 3 2026-06-23
CHH427 - 3 2026-06-23
CHH7974 Hainan Airlines 2 2026-06-13
CHH7963 Hainan Airlines 2 2026-05-29
CHH7851 - 2 2026-07-02
CHH776 Hainan Airlines 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 CHH7357 - Jul 12, 12:40 UTCJul 12, 12:50 UTC10m
2026-07-11 CHH470 - Jul 11, 10:30 UTCJul 11, 16:50 UTC6h 20m
2026-07-10 CHH469 - Jul 10, 15:10 UTCJul 11, 05:05 UTC13h 55m
2026-07-10 CHH7568 - Jul 10, 12:40 UTCJul 10, 13:05 UTC25m
2026-07-02 CHH7851 - Jul 2, 22:55 UTCJul 2, 23:05 UTC10m
2026-07-02 CHH7932 - Jul 2, 10:10 UTCJul 2, 17:30 UTC7h 20m
2026-07-02 CHH7932 - Jul 2, 07:30 UTCJul 2, 07:45 UTC15m
2026-07-01 CHH7931 - Jul 1, 18:30 UTCJul 2, 04:35 UTC10h 5m
2026-07-01 CHH7713 - Jul 1, 13:05 UTCJul 1, 13:20 UTC15m
2026-07-01 CHH7704 - Jul 1, 05:15 UTCJul 1, 05:25 UTC10m
2026-07-01 CHH7701 - Jul 1, 00:45 UTCJul 1, 01:00 UTC15m
2026-06-30 CHH492 - Jun 30, 20:55 UTCJun 30, 21:15 UTC20m
2026-06-30 CHH492 - Jun 30, 12:30 UTCJun 30, 18:30 UTC6h 0m
2026-06-29 CHH491 - Jun 29, 22:55 UTCJun 30, 05:45 UTC6h 50m
2026-06-29 CHH491 - Jun 29, 19:49 UTCJun 29, 20:00 UTC10m
2026-06-29 CHH7701 - Jun 29, 00:54 UTCJun 29, 01:10 UTC15m
2026-06-28 CHH408 - Jun 28, 20:09 UTCJun 28, 20:25 UTC15m
2026-06-28 CHH408 - Jun 28, 11:35 UTCJun 28, 17:39 UTC6h 5m
2026-06-27 CHH407 - Jun 27, 23:04 UTCJun 28, 05:55 UTC6h 50m
2026-06-24 CHH7851 - Jun 24, 23:59 UTCJun 25, 00:09 UTC10m
2026-06-23 CHH428 - Jun 23, 11:49 UTCJun 23, 15:34 UTC3h 45m
2026-06-23 CHH427 - Jun 23, 01:50 UTCJun 23, 05:00 UTC3h 10m
2026-06-21 CHH7801 PEK → CAN Jun 21, 00:55 UTCJun 21, 01:10 UTC15m
2026-06-20 CHH752 - Jun 20, 11:14 UTCJun 20, 20:09 UTC8h 55m
2026-06-19 CHH751 - Jun 19, 21:59 UTCJun 20, 05:04 UTC7h 5m
2026-06-19 CHH751 - Jun 19, 18:59 UTCJun 19, 19:14 UTC15m
2026-06-18 CHH492 - Jun 18, 11:35 UTCJun 18, 17:45 UTC6h 10m
2026-06-16 CHH8002 - Jun 16, 07:30 UTCJun 16, 08:10 UTC40m
2026-06-14 CHH757 - Jun 14, 23:25 UTCJun 15, 06:04 UTC6h 40m
2026-06-14 CHH757 - Jun 14, 18:20 UTCJun 14, 18:35 UTC15m
2026-06-14 CHH7394 HGH → SZX Jun 14, 06:15 UTCJun 14, 06:35 UTC20m
2026-06-13 CHH7974 LAX → PVG Jun 13, 08:35 UTCJun 13, 12:15 UTC3h 40m
2026-06-12 CHH7973 PEK → KJA Jun 12, 23:10 UTCJun 13, 05:35 UTC6h 24m
2026-06-12 CHH7973 PEK → KJA Jun 12, 18:01 UTCJun 12, 18:10 UTC10m
2026-06-12 CHH7475 SZX → TFU Jun 12, 08:10 UTCJun 12, 08:20 UTC10m
2026-06-12 CHH7703 PEK → SZX Jun 12, 01:45 UTCJun 12, 01:55 UTC10m
2026-06-11 CHH490 BER → PEK Jun 11, 20:20 UTCJun 11, 20:40 UTC20m
2026-06-11 CHH490 BER → PEK Jun 11, 12:05 UTCJun 11, 17:55 UTC5h 50m
2026-06-11 CHH489 PEK → BER Jun 11, 03:55 UTCJun 11, 04:15 UTC20m
2026-06-10 CHH489 PEK → BER Jun 10, 22:15 UTCJun 11, 01:50 UTC3h 35m
2026-06-10 CHH7703 PEK → SZX Jun 10, 01:50 UTCJun 10, 02:05 UTC15m
2026-06-09 CHH752 DUB → PEK Jun 9, 12:05 UTCJun 9, 21:20 UTC9h 15m
2026-06-08 CHH751 PEK → DUB Jun 8, 22:10 UTCJun 9, 04:55 UTC6h 45m
2026-06-08 CHH7277 PEK → HGH Jun 8, 00:20 UTCJun 8, 00:30 UTC10m
2026-06-07 CHH492 BRU → PEK Jun 7, 20:10 UTCJun 7, 20:25 UTC15m
2026-06-07 CHH492 BRU → PEK Jun 7, 11:30 UTCJun 7, 17:45 UTC6h 15m
2026-06-06 CHH491 PEK → BRU Jun 6, 22:30 UTCJun 7, 04:45 UTC6h 15m
2026-06-06 CHH7605 PEK → SHA Jun 6, 07:55 UTCJun 6, 08:05 UTC10m
2026-06-05 CHH490 BER → PEK Jun 5, 20:05 UTCJun 5, 20:25 UTC20m
2026-06-05 CHH490 BER → PEK Jun 5, 12:05 UTCJun 5, 17:40 UTC5h 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-1138 page for operator, model, and routing details .

Mode-S 78141F frequently asked

What is Mode-S code 78141F?
78141F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1138.
Where is Mode-S 78141F registered?
Mode-S code 78141F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78141F broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78141F, octal 36012037, decimal 7,869,471.
What flights does 78141F operate?
Mode-S 78141F has broadcast 20 distinct callsigns, including CHH492, CHH490, CHH7932, CHH489, CHH7973.