Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

78129F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1342 · BOEING 787-9 Dreamliner

Hex
78129F
Octal
36011237
Decimal
7,869,087
Country
CN
Tail
B-1342
Type
B789
No current signal · last broadcast 4d ago
Flights observed
55
Distinct callsigns
20
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 78129F.

Country allocation

The ICAO 24-bit address 78129F 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
CHH7922 Hainan Airlines 9 2026-05-21
CHH7921 Hainan Airlines 7 2026-05-20
CHH730 Hainan Airlines 3 2026-05-09
CHH7932 Hainan Airlines 2 2026-05-07
CHH7767 Hainan Airlines 2 2026-05-03
CHH7722 Hainan Airlines 2 2026-05-22
CHH7711 Hainan Airlines 2 2026-04-30
CHH7396 Hainan Airlines 2 2026-05-31
CHH491 Hainan Airlines 2 2026-04-28
CHH472 Hainan Airlines 2 2026-05-05
CHH471 Hainan Airlines 2 2026-05-05
CHH7970 Hainan Airlines 1 2026-05-12
CHH7969 Hainan Airlines 1 2026-05-12
CHH7931 Hainan Airlines 1 2026-05-06
CHH7768 Hainan Airlines 1 2026-04-19
CHH7721 Hainan Airlines 1 2026-04-20
CHH7713 Hainan Airlines 1 2026-04-18
CHH7706 Hainan Airlines 1 2026-04-28
CHH7702 Hainan Airlines 1 2026-05-07
CHH762 Hainan Airlines 1 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-31 CHH7396 HGH → SZX May 31, 12:35 UTCMay 31, 13:00 UTC25m
2026-05-29 CHH7476 TFU → SZX May 29, 17:05 UTCMay 29, 17:15 UTC10m
2026-05-29 CHH7475 SZX → TFU May 29, 08:15 UTCMay 29, 08:25 UTC10m
2026-05-28 CHH470 BRU → CKG May 28, 12:10 UTCMay 28, 18:35 UTC6h 25m
2026-05-27 CHH469 CKG → BRU May 27, 22:30 UTCMay 28, 05:00 UTC6h 30m
2026-05-27 CHH7357 SZX → CKG May 27, 12:45 UTCMay 27, 12:55 UTC10m
2026-05-25 CHH7158 CKG → SZX May 25, 05:35 UTCMay 25, 05:45 UTC10m
2026-05-22 CHH7722 PVG → SZX May 22, 09:40 UTCMay 22, 10:05 UTC25m
2026-05-21 CHH7922 BRU → PVG May 21, 15:35 UTCMay 22, 08:55 UTC17h 20m
2026-05-21 CHH7922 BRU → PVG May 21, 11:50 UTCMay 22, 08:55 UTC21h 5m
2026-05-21 CHH7922 BRU → PVG May 21, 10:10 UTCMay 22, 08:55 UTC22h 45m
2026-05-20 CHH7921 PVG → BRU May 20, 22:50 UTCMay 21, 05:30 UTC6h 40m
2026-05-19 CHH7922 BRU → PVG May 19, 10:15 UTCMay 19, 16:10 UTC5h 55m
2026-05-18 CHH7921 PVG → BRU May 18, 23:05 UTCMay 19, 05:50 UTC6h 45m
2026-05-16 CHH7922 BRU → PVG May 16, 10:05 UTCMay 16, 16:10 UTC6h 5m
2026-05-15 CHH7921 PVG → BRU May 15, 22:55 UTCMay 16, 05:30 UTC6h 35m
2026-05-14 CHH7922 BRU → PVG May 14, 10:20 UTCMay 14, 16:25 UTC6h 5m
2026-05-13 CHH7921 PVG → BRU May 13, 22:40 UTCMay 14, 05:20 UTC6h 40m
2026-05-12 CHH7970 BEG → PEK May 12, 09:05 UTCMay 12, 14:45 UTC5h 40m
2026-05-12 CHH7969 PEK → BEG May 12, 02:45 UTCMay 12, 05:25 UTC2h 40m
2026-05-09 CHH730 BOS → SEA May 9, 17:35 UTCMay 9, 17:55 UTC20m
2026-05-09 CHH730 BOS → SEA May 9, 07:30 UTCMay 9, 14:30 UTC7h 0m
2026-05-08 CHH730 BOS → SEA May 8, 23:05 UTCMay 9, 05:45 UTC6h 40m
2026-05-08 CHH729 PEK → BOS May 8, 06:30 UTCMay 8, 19:25 UTC12h 55m
2026-05-07 CHH7702 SZX → PEK May 7, 23:29 UTCMay 7, 23:39 UTC10m
2026-05-07 CHH7932 AKL → SZX May 7, 20:25 UTCMay 7, 20:40 UTC15m
2026-05-07 CHH7932 AKL → SZX May 7, 09:00 UTCMay 7, 19:20 UTC10h 20m
2026-05-06 CHH7931 SZX → AKL May 6, 19:15 UTCMay 7, 05:15 UTC10h 0m
2026-05-05 CHH472 CAI → SZX May 5, 18:55 UTCMay 5, 19:10 UTC15m
2026-05-05 CHH472 CAI → SZX May 5, 11:35 UTCMay 5, 16:45 UTC5h 10m
2026-05-05 CHH471 SZX → CAI May 5, 03:40 UTCMay 5, 05:35 UTC1h 55m
2026-05-04 CHH471 SZX → CAI May 4, 18:15 UTCMay 4, 18:30 UTC15m
2026-05-04 CHH7396 HGH → SZX May 4, 11:30 UTCMay 4, 11:45 UTC15m
2026-05-03 CHH7767 SZX → KMG May 3, 23:39 UTCMay 3, 23:55 UTC15m
2026-05-01 CHH762 BUD → SZX May 1, 10:10 UTCMay 1, 13:15 UTC3h 5m
2026-05-01 CHH761 SZX → BUD May 1, 00:40 UTCMay 1, 04:40 UTC4h 0m
2026-04-30 CHH7711 PEK → SZX Apr 30, 12:25 UTCApr 30, 12:35 UTC10m
2026-04-30 CHH7711 PEK → SZX Apr 30, 10:05 UTCApr 30, 10:15 UTC10m
2026-04-30 CHH7248 TFU → PEK Apr 30, 07:00 UTCApr 30, 07:10 UTC10m
2026-04-30 CHH7147 PEK → TFU Apr 30, 00:10 UTCApr 30, 00:30 UTC20m
2026-04-29 CHH492 BRU → PEK Apr 29, 11:35 UTCApr 29, 20:45 UTC9h 10m
2026-04-28 CHH491 PEK → BRU Apr 28, 20:45 UTCApr 29, 04:20 UTC7h 35m
2026-04-28 CHH491 PEK → BRU Apr 28, 19:00 UTCApr 28, 19:10 UTC10m
2026-04-28 CHH7706 SZX → PEK Apr 28, 05:45 UTCApr 28, 06:00 UTC15m
2026-04-27 CHH7722 PVG → SZX Apr 27, 08:30 UTCApr 27, 08:50 UTC20m
2026-04-25 CHH7922 BRU → PVG Apr 25, 11:45 UTCApr 25, 17:45 UTC6h 0m
2026-04-25 CHH7921 PVG → BRU Apr 25, 00:45 UTCApr 25, 08:30 UTC7h 45m
2026-04-23 CHH7922 BRU → PVG Apr 23, 10:30 UTCApr 23, 16:45 UTC6h 15m
2026-04-22 CHH7921 PVG → BRU Apr 22, 23:30 UTCApr 23, 05:55 UTC6h 25m
2026-04-21 CHH7922 BRU → PVG Apr 21, 10:30 UTCApr 21, 16:45 UTC6h 15m

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-1342 page for operator, model, and routing details .

Mode-S 78129F frequently asked

What is Mode-S code 78129F?
78129F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1342.
Where is Mode-S 78129F registered?
Mode-S code 78129F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78129F broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78129F, octal 36011237, decimal 7,869,087.
What flights does 78129F operate?
Mode-S 78129F has broadcast 20 distinct callsigns, including CHH7922, CHH7921, CHH730, CHH7932, CHH7767.