Apparatus

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sensors Mode-S transponder

78149D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1167 · BOEING 787-9 Dreamliner

Hex
78149D
Octal
36012235
Decimal
7,869,597
Country
CN
Tail
B-1167
Type
B789
Broadcasting now · callsign CSN678 · 10,800 ft
Flights observed
161
Distinct callsigns
20
Country
CN
Last broadcast
8h ago

Current position

78149D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 78149D 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
CSN377 - 17 2026-07-13
CSN6043 - 13 2026-07-02
CSN378 - 12 2026-07-13
CSN6044 - 9 2026-07-03
CSN354 - 8 2026-06-30
CSN668 - 7 2026-07-12
CSN667 - 7 2026-07-12
CSN664 China Southern Airlines 6 2026-05-21
CSN649 - 6 2026-06-27
CSN353 - 6 2026-06-30
CSN3092 - 6 2026-06-26
CSN8069 - 5 2026-06-25
CSN650 - 5 2026-06-27
CSN304 China Southern Airlines 5 2026-05-28
CSN8089 China Southern Airlines 4 2026-05-30
CSN677 - 4 2026-07-16
CSN391 - 4 2026-07-14
CSN320 China Southern Airlines 4 2026-05-25
CSN678 - 3 2026-07-17
CSN663 China Southern Airlines 3 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CSN678 - Jul 17, 13:40 UTCJul 17, 19:45 UTC6h 5m
2026-07-16 CSN677 - Jul 16, 10:45 UTCJul 16, 17:14 UTC6h 30m
2026-07-14 CSN392 - Jul 14, 17:35 UTCJul 14, 18:45 UTC1h 10m
2026-07-14 CSN391 - Jul 14, 14:25 UTCJul 14, 15:40 UTC1h 15m
2026-07-13 CSN378 - Jul 13, 19:20 UTCJul 13, 23:55 UTC4h 35m
2026-07-13 CSN377 - Jul 13, 09:45 UTCJul 13, 15:25 UTC5h 40m
2026-07-12 CSN377 - Jul 12, 11:20 UTCJul 13, 11:00 UTC23h 40m
2026-07-12 CSN668 - Jul 12, 09:35 UTCJul 12, 12:05 UTC2h 30m
2026-07-12 CSN667 - Jul 12, 04:10 UTCJul 12, 07:20 UTC3h 10m
2026-07-10 CSN678 - Jul 10, 13:15 UTCJul 10, 19:20 UTC6h 5m
2026-07-09 CSN677 - Jul 9, 10:25 UTCJul 9, 17:00 UTC6h 35m
2026-07-07 CSN332 - Jul 7, 12:20 UTCJul 7, 18:15 UTC5h 55m
2026-07-06 CSN331 - Jul 6, 21:55 UTCJul 7, 04:10 UTC6h 15m
2026-07-05 CSN668 - Jul 5, 09:15 UTCJul 5, 11:45 UTC2h 30m
2026-07-05 CSN667 - Jul 5, 02:35 UTCJul 5, 05:40 UTC3h 5m
2026-07-04 CSN667 - Jul 4, 18:40 UTCJul 4, 18:50 UTC10m
2026-07-03 CSN6044 - Jul 3, 17:50 UTCJul 3, 21:30 UTC3h 40m
2026-07-02 CSN6043 - Jul 2, 18:55 UTCJul 2, 22:20 UTC3h 25m
2026-07-01 CSN6043 - Jul 1, 21:20 UTCJul 2, 20:40 UTC23h 20m
2026-07-01 CSN6044 - Jul 1, 19:55 UTCJul 2, 19:15 UTC23h 20m
2026-07-01 CSN6044 - Jul 1, 17:55 UTCJul 1, 21:40 UTC3h 45m
2026-06-30 CSN6044 - Jun 30, 21:45 UTCJul 1, 21:15 UTC23h 30m
2026-06-30 CSN6043 - Jun 30, 19:20 UTCJul 1, 18:35 UTC23h 15m
2026-06-30 CSN6043 - Jun 30, 18:55 UTCJun 30, 21:55 UTC3h 0m
2026-06-30 CSN354 - Jun 30, 06:10 UTCJun 30, 09:35 UTC3h 25m
2026-06-30 CSN353 - Jun 30, 03:50 UTCJun 30, 04:20 UTC30m
2026-06-29 CSN354 - Jun 29, 08:50 UTCJun 29, 09:14 UTC25m
2026-06-29 CSN354 - Jun 29, 05:54 UTCJun 29, 06:19 UTC25m
2026-06-29 CSN353 - Jun 29, 01:00 UTCJun 29, 04:04 UTC3h 5m
2026-06-28 CSN354 - Jun 28, 09:39 UTCJun 28, 10:00 UTC20m
2026-06-28 CSN354 - Jun 28, 06:40 UTCJun 28, 07:05 UTC25m
2026-06-28 CSN353 - Jun 28, 04:44 UTCJun 28, 05:09 UTC25m
2026-06-28 CSN353 - Jun 28, 02:10 UTCJun 28, 02:20 UTC10m
2026-06-27 CSN650 - Jun 27, 10:50 UTCJun 27, 13:44 UTC2h 55m
2026-06-27 CSN649 - Jun 27, 00:00 UTCJun 27, 05:59 UTC6h 0m
2026-06-26 CSN3092 - Jun 26, 05:30 UTCJun 26, 05:50 UTC20m
2026-06-26 CSN3092 - Jun 26, 04:14 UTCJun 26, 04:45 UTC30m
2026-06-26 CSN3091 - Jun 26, 00:59 UTCJun 26, 02:44 UTC1h 45m
2026-06-25 CSN8069 - Jun 25, 08:55 UTCJun 25, 21:10 UTC12h 15m
2026-06-24 CSN6044 - Jun 24, 17:55 UTCJun 24, 21:04 UTC3h 10m
2026-06-23 CSN6043 - Jun 23, 19:15 UTCJun 23, 22:10 UTC2h 55m
2026-06-23 CSN6043 - Jun 23, 00:04 UTCJun 23, 22:10 UTC22h 5m
2026-06-22 CSN378 - Jun 22, 19:19 UTCJun 23, 19:15 UTC23h 55m
2026-06-22 CSN377 - Jun 22, 09:54 UTCJun 22, 15:20 UTC5h 25m
2026-06-21 CSN377 - Jun 21, 11:20 UTCJun 22, 11:14 UTC23h 55m
2026-06-21 CSN668 - Jun 21, 09:15 UTCJun 21, 11:49 UTC2h 35m
2026-06-21 CSN667 - Jun 21, 02:20 UTCJun 21, 05:25 UTC3h 5m
2026-06-14 CSN378 MAD → CAN Jun 14, 20:15 UTCJun 15, 00:55 UTC4h 39m
2026-06-14 CSN377 CAN → MAD Jun 14, 10:00 UTCJun 14, 15:30 UTC5h 30m
2026-06-12 CSN378 MAD → CAN Jun 12, 19:20 UTCJun 13, 00:15 UTC4h 55m

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-1167 page for operator, model, and routing details .

Mode-S 78149D frequently asked

What is Mode-S code 78149D?
78149D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1167.
Where is Mode-S 78149D registered?
Mode-S code 78149D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78149D broadcasting right now?
Yes. Mode-S 78149D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78149D, octal 36012235, decimal 7,869,597.
What flights does 78149D operate?
Mode-S 78149D has broadcast 20 distinct callsigns, including CSN377, CSN6043, CSN378, CSN6044, CSN354.