Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

78129E

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1345 · BOEING 787-9 Dreamliner

Hex
78129E
Octal
36011236
Decimal
7,869,086
Country
CN
Tail
B-1345
Type
B789
No current signal · last broadcast 2h ago
Flights observed
154
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 78129E.

Country allocation

The ICAO 24-bit address 78129E 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
CHH785 - 7 2026-07-02
CHH727 - 6 2026-06-16
CHH492 - 6 2026-06-27
CHH7992 Hainan Airlines 5 2026-06-15
CHH7991 - 5 2026-06-14
CHH786 - 5 2026-07-03
CHH728 - 5 2026-06-17
CHH798 - 4 2026-07-01
CHH797 - 4 2026-06-30
CHH789 Hainan Airlines 4 2026-04-15
CHH491 - 4 2026-06-26
CHH446 Hainan Airlines 4 2026-05-29
CHH7974 - 3 2026-06-29
CHH7973 - 3 2026-06-28
CHH7711 - 3 2026-07-06
CHH7707 - 3 2026-06-26
CHH7701 - 3 2026-07-06
CHH7357 Hainan Airlines 3 2026-06-20
CHH730 Hainan Airlines 3 2026-04-23
CHH489 Hainan Airlines 3 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 - - Jul 14, 05:00 UTCJul 14, 05:10 UTC10m
2026-07-09 CHH7851 - Jul 9, 23:00 UTCJul 9, 23:10 UTC10m
2026-07-09 CHH7932 - Jul 9, 07:10 UTCJul 9, 17:40 UTC10h 30m
2026-07-08 CHH7931 - Jul 8, 19:00 UTCJul 9, 05:05 UTC10h 5m
2026-07-08 CHH7025 - Jul 8, 12:45 UTCJul 8, 13:00 UTC15m
2026-07-08 CHH7024 - Jul 8, 08:55 UTCJul 8, 09:05 UTC10m
2026-07-08 CHH7157 - Jul 8, 01:35 UTCJul 8, 01:45 UTC10m
2026-07-07 CHH438 - Jul 7, 20:05 UTCJul 7, 20:20 UTC15m
2026-07-07 CHH438 - Jul 7, 09:50 UTCJul 7, 13:10 UTC3h 20m
2026-07-06 CHH437 - Jul 6, 23:15 UTCJul 7, 05:55 UTC6h 40m
2026-07-06 CHH437 - Jul 6, 18:05 UTCJul 6, 18:20 UTC15m
2026-07-06 CHH7711 - Jul 6, 12:10 UTCJul 6, 12:30 UTC20m
2026-07-06 CHH7706 - Jul 6, 07:25 UTCJul 6, 07:35 UTC10m
2026-07-06 CHH7701 - Jul 6, 01:00 UTCJul 6, 01:15 UTC15m
2026-07-05 CHH408 - Jul 5, 20:00 UTCJul 5, 20:15 UTC15m
2026-07-05 CHH408 - Jul 5, 11:25 UTCJul 5, 17:30 UTC6h 5m
2026-07-04 CHH407 - Jul 4, 20:15 UTCJul 5, 06:10 UTC9h 55m
2026-07-03 CHH786 - Jul 3, 09:00 UTCJul 3, 19:00 UTC10h 0m
2026-07-02 CHH785 - Jul 2, 15:20 UTCJul 3, 05:55 UTC14h 35m
2026-07-01 CHH785 - Jul 1, 23:15 UTCJul 2, 21:30 UTC22h 15m
2026-07-01 CHH798 - Jul 1, 18:15 UTCJul 2, 15:25 UTC21h 10m
2026-07-01 CHH798 - Jul 1, 09:00 UTCJul 1, 23:20 UTC14h 20m
2026-06-30 CHH797 - Jun 30, 19:30 UTCJul 1, 05:20 UTC9h 50m
2026-06-29 CHH7974 - Jun 29, 19:20 UTCJun 29, 19:29 UTC10m
2026-06-29 CHH7974 - Jun 29, 08:39 UTCJun 29, 11:10 UTC2h 30m
2026-06-28 CHH7973 - Jun 28, 23:09 UTCJun 29, 05:40 UTC6h 30m
2026-06-28 CHH7973 - Jun 28, 18:10 UTCJun 28, 18:29 UTC20m
2026-06-28 CHH7396 - Jun 28, 14:25 UTCJun 28, 14:45 UTC20m
2026-06-28 CHH7703 - Jun 28, 01:50 UTCJun 28, 02:10 UTC20m
2026-06-27 CHH492 - Jun 27, 21:25 UTCJun 27, 21:40 UTC15m
2026-06-27 CHH492 - Jun 27, 12:45 UTCJun 27, 18:54 UTC6h 10m
2026-06-26 CHH491 - Jun 26, 19:09 UTCJun 27, 04:29 UTC9h 20m
2026-06-26 CHH7707 - Jun 26, 06:19 UTCJun 26, 06:39 UTC20m
2026-06-25 CHH7960 - Jun 25, 07:54 UTCJun 25, 18:15 UTC10h 20m
2026-06-24 CHH7959 - Jun 24, 20:35 UTCJun 25, 05:20 UTC8h 45m
2026-06-24 CHH7959 - Jun 24, 18:29 UTCJun 24, 18:39 UTC10m
2026-06-24 CHH7711 - Jun 24, 12:44 UTCJun 24, 13:05 UTC20m
2026-06-24 CHH7711 - Jun 24, 10:14 UTCJun 24, 10:35 UTC20m
2026-06-24 CHH7706 - Jun 24, 05:24 UTCJun 24, 05:40 UTC15m
2026-06-24 CHH7701 - Jun 24, 00:49 UTCJun 24, 01:14 UTC25m
2026-06-20 CHH7357 SZX → CKG Jun 20, 12:34 UTCJun 20, 12:50 UTC15m
2026-06-19 CHH758 - Jun 19, 10:24 UTCJun 19, 20:19 UTC9h 55m
2026-06-19 CHH757 - Jun 19, 01:10 UTCJun 19, 08:09 UTC7h 0m
2026-06-18 CHH757 - Jun 18, 20:00 UTCJun 18, 20:10 UTC10m
2026-06-18 CHH7358 - Jun 18, 16:10 UTCJun 18, 16:20 UTC10m
2026-06-17 CHH728 - Jun 17, 09:50 UTCJun 17, 14:50 UTC5h 0m
2026-06-16 CHH727 - Jun 16, 22:15 UTCJun 17, 05:55 UTC7h 40m
2026-06-15 CHH7992 FCO → CKG Jun 15, 11:00 UTCJun 15, 14:20 UTC3h 20m
2026-06-14 CHH7991 - Jun 14, 22:30 UTCJun 15, 05:30 UTC7h 0m
2026-06-14 CHH7357 SZX → CKG Jun 14, 13:15 UTCJun 14, 13:25 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-1345 page for operator, model, and routing details .

Mode-S 78129E frequently asked

What is Mode-S code 78129E?
78129E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1345.
Where is Mode-S 78129E registered?
Mode-S code 78129E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78129E broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78129E, octal 36011236, decimal 7,869,086.
What flights does 78129E operate?
Mode-S 78129E has broadcast 20 distinct callsigns, including CHH785, CHH727, CHH492, CHH7992, CHH7991.