Apparatus

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sensors Mode-S transponder

78139F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1096 · AIRBUS A-330-300

Hex
78139F
Octal
36011637
Decimal
7,869,343
Country
CN
Tail
B-1096
Type
A333
No current signal · last broadcast 8h ago
Flights observed
103
Distinct callsigns
20
Country
CN
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 78139F.

Country allocation

The ICAO 24-bit address 78139F 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
CHH7985 Hainan Airlines 12 2026-04-26
CHH7986 Hainan Airlines 10 2026-04-27
CHH754 Hainan Airlines 8 2026-05-29
CHH7938 Hainan Airlines 7 2026-05-13
CHH7937 Hainan Airlines 7 2026-05-12
CHH753 Hainan Airlines 7 2026-05-28
CHH7966 Hainan Airlines 6 2026-05-01
CHH7608 Hainan Airlines 3 2026-05-21
CHH7603 Hainan Airlines 3 2026-05-03
CHH752 Hainan Airlines 3 2026-05-24
CHH7965 Hainan Airlines 2 2026-04-30
CHH7809 Hainan Airlines 2 2026-05-20
CHH7808 Hainan Airlines 2 2026-05-17
CHH7705 Hainan Airlines 2 2026-05-26
CHH7607 Hainan Airlines 2 2026-05-28
CHH751 Hainan Airlines 2 2026-05-23
CHH7277 Hainan Airlines 2 2026-05-21
CHH407 Hainan Airlines 2 2026-05-21
CHH7814 Hainan Airlines 1 2026-05-20
CHH7813 Hainan Airlines 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CHH754 MAN → PEK May 29, 21:00 UTCMay 29, 21:15 UTC15m
2026-05-29 CHH754 MAN → PEK May 29, 11:35 UTCMay 29, 18:25 UTC6h 51m
2026-05-28 CHH753 PEK → MAN May 28, 19:10 UTCMay 29, 05:20 UTC10h 10m
2026-05-28 CHH7607 PEK → SHA May 28, 09:00 UTCMay 28, 09:10 UTC10m
2026-05-27 CHH7611 PEK → PVG May 27, 13:20 UTCMay 27, 13:30 UTC10m
2026-05-27 CHH7704 SZX → PEK May 27, 01:09 UTCMay 27, 01:24 UTC15m
2026-05-26 CHH7705 PEK → SZX May 26, 06:20 UTCMay 26, 06:44 UTC25m
2026-05-26 CHH7705 PEK → SZX May 26, 03:55 UTCMay 26, 04:15 UTC20m
2026-05-24 CHH752 DUB → PEK May 24, 11:25 UTCMay 24, 17:50 UTC6h 25m
2026-05-23 CHH751 PEK → DUB May 23, 22:50 UTCMay 24, 06:15 UTC7h 25m
2026-05-22 CHH408 EDI → PEK May 22, 11:40 UTCMay 22, 17:45 UTC6h 5m
2026-05-21 CHH407 PEK → EDI May 21, 22:55 UTCMay 22, 06:00 UTC7h 5m
2026-05-21 CHH407 PEK → EDI May 21, 19:35 UTCMay 21, 19:50 UTC15m
2026-05-21 CHH7608 SHA → PEK May 21, 12:45 UTCMay 21, 12:55 UTC10m
2026-05-21 CHH7277 PEK → HGH May 21, 00:20 UTCMay 21, 00:30 UTC10m
2026-05-20 CHH7814 CAN → PEK May 20, 14:35 UTCMay 20, 14:50 UTC15m
2026-05-20 CHH7809 PEK → CAN May 20, 07:05 UTCMay 20, 07:20 UTC15m
2026-05-19 CHH770 OSL → PEK May 19, 11:35 UTCMay 19, 19:35 UTC8h 0m
2026-05-18 CHH769 PEK → OSL May 18, 19:25 UTCMay 19, 04:40 UTC9h 15m
2026-05-18 CHH7347 PEK → TFU May 18, 06:55 UTCMay 18, 07:20 UTC25m
2026-05-17 CHH7577 PEK → HGH May 17, 23:25 UTCMay 17, 23:35 UTC10m
2026-05-17 CHH7808 CAN → PEK May 17, 05:55 UTCMay 17, 06:05 UTC10m
2026-05-13 CHH7938 LAX → PEK May 13, 12:15 UTCMay 13, 18:00 UTC5h 45m
2026-05-12 CHH7937 PEK → PRG May 12, 22:15 UTCMay 13, 04:35 UTC6h 20m
2026-05-11 CHH7938 LAX → PEK May 11, 12:05 UTCMay 11, 17:50 UTC5h 46m
2026-05-10 CHH7937 PEK → PRG May 10, 22:25 UTCMay 11, 01:50 UTC3h 25m
2026-05-10 CHH7277 PEK → HGH May 10, 00:15 UTCMay 10, 00:24 UTC10m
2026-05-08 CHH7938 LAX → PEK May 8, 12:04 UTCMay 8, 20:25 UTC8h 20m
2026-05-07 CHH7937 PEK → PRG May 7, 18:55 UTCMay 8, 05:00 UTC10h 4m
2026-05-07 CHH7706 SZX → PEK May 7, 05:20 UTCMay 7, 05:35 UTC15m
2026-05-06 CHH7711 PEK → SZX May 6, 09:50 UTCMay 6, 10:15 UTC25m
2026-05-06 CHH7147 PEK → TFU May 6, 00:20 UTCMay 6, 00:46 UTC25m
2026-05-05 CHH7268 CKG → PEK May 5, 15:35 UTCMay 5, 15:45 UTC10m
2026-05-05 CHH7267 PEK → CKG May 5, 09:50 UTCMay 5, 10:05 UTC15m
2026-05-05 CHH7808 CAN → PEK May 5, 08:00 UTCMay 5, 08:10 UTC10m
2026-05-05 CHH7801 PEK → CAN May 5, 00:45 UTCMay 5, 01:05 UTC20m
2026-05-04 CHH7938 LAX → PEK May 4, 20:20 UTCMay 4, 20:35 UTC15m
2026-05-04 CHH7938 LAX → PEK May 4, 12:10 UTCMay 4, 17:55 UTC5h 45m
2026-05-04 CHH7937 PEK → PRG May 4, 04:50 UTCMay 4, 05:05 UTC15m
2026-05-03 CHH7937 PEK → PRG May 3, 19:00 UTCMay 3, 23:25 UTC4h 25m
2026-05-03 CHH7607 PEK → SHA May 3, 09:00 UTCMay 3, 09:15 UTC15m
2026-05-03 CHH7603 PEK → SHA May 3, 01:05 UTCMay 3, 01:20 UTC15m
2026-05-02 CHH752 DUB → PEK May 2, 20:20 UTCMay 2, 20:35 UTC15m
2026-05-02 CHH752 DUB → PEK May 2, 11:15 UTCMay 2, 17:45 UTC6h 30m
2026-05-01 CHH751 PEK → DUB May 1, 19:00 UTCMay 2, 05:40 UTC10h 40m
2026-05-01 CHH7966 LED → PEK May 1, 00:05 UTCMay 1, 00:25 UTC20m
2026-04-30 CHH7966 LED → PEK Apr 30, 18:25 UTCApr 30, 21:35 UTC3h 10m
2026-04-30 CHH7966 LED → PEK Apr 30, 17:30 UTCApr 30, 17:50 UTC20m
2026-04-30 CHH7965 PEK → LED Apr 30, 07:05 UTCApr 30, 14:15 UTC7h 10m
2026-04-30 CHH7966 LED → PEK Apr 30, 00:20 UTCApr 30, 00:40 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-1096 page for operator, model, and routing details .

Mode-S 78139F frequently asked

What is Mode-S code 78139F?
78139F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1096.
Where is Mode-S 78139F registered?
Mode-S code 78139F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78139F broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78139F, octal 36011637, decimal 7,869,343.
What flights does 78139F operate?
Mode-S 78139F has broadcast 20 distinct callsigns, including CHH7985, CHH7986, CHH754, CHH7938, CHH7937.