Apparatus

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sensors Mode-S transponder

78198D

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20EW · BOEING 787-9 Dreamliner

Hex
78198D
Octal
36014615
Decimal
7,870,861
Country
CN
Tail
B-20EW
Type
B789
Broadcasting now · callsign CSN8171 · 37,975 ft
Flights observed
147
Distinct callsigns
20
Country
CN
Last broadcast
10m ago

Current position

78198D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 78198D 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
CSN690 China Southern Airlines 13 2026-05-25
CSN689 China Southern Airlines 12 2026-05-24
CSN654 China Southern Airlines 11 2026-05-12
CSN653 China Southern Airlines 10 2026-05-12
CSN679 - 9 2026-07-13
CSN8172 China Southern Airlines 8 2026-07-08
CSN6041 China Southern Airlines 8 2026-06-26
CSN338 China Southern Airlines 8 2026-05-22
CSN8066 - 7 2026-06-25
CSN633 - 7 2026-07-01
CSN8171 - 6 2026-07-14
CSN634 - 6 2026-07-02
CSN680 - 5 2026-07-13
CSN392 - 5 2026-06-28
CSN391 - 5 2026-06-28
CSN337 China Southern Airlines 5 2026-05-22
CSN6042 China Southern Airlines 4 2026-06-26
CSN6036 - 4 2026-06-23
CSN8065 - 3 2026-06-25
CSN6035 - 2 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN8171 - Jul 14, 10:40 UTCJul 14, 13:15 UTC2h 35m
2026-07-14 CSN8171 - Jul 14, 07:30 UTCJul 14, 07:40 UTC10m
2026-07-13 CSN680 - Jul 13, 20:00 UTCJul 13, 20:10 UTC10m
2026-07-13 CSN680 - Jul 13, 12:35 UTCJul 13, 14:25 UTC1h 50m
2026-07-13 CSN679 - Jul 13, 02:40 UTCJul 13, 03:05 UTC25m
2026-07-12 CSN679 - Jul 12, 17:35 UTCJul 12, 21:35 UTC4h 0m
2026-07-08 CSN8172 ICN → CGQ Jul 8, 02:20 UTCJul 8, 02:30 UTC10m
2026-07-07 CSN8172 ICN → CGQ Jul 7, 19:35 UTCJul 7, 23:55 UTC4h 20m
2026-07-07 CSN8171 - Jul 7, 13:00 UTCJul 7, 17:30 UTC4h 30m
2026-07-06 CSN680 - Jul 6, 12:45 UTCJul 6, 20:25 UTC7h 40m
2026-07-06 CSN679 - Jul 6, 03:10 UTCJul 6, 03:35 UTC25m
2026-07-05 CSN679 - Jul 5, 18:35 UTCJul 6, 02:40 UTC8h 5m
2026-07-04 CSN8050 - Jul 4, 17:45 UTCJul 5, 00:00 UTC6h 15m
2026-07-04 CSN8049 - Jul 4, 08:45 UTCJul 4, 15:40 UTC6h 55m
2026-07-03 CSN350 - Jul 3, 06:05 UTCJul 3, 08:40 UTC2h 35m
2026-07-02 CSN634 - Jul 2, 15:00 UTCJul 3, 04:15 UTC13h 15m
2026-07-01 CSN633 - Jul 1, 17:25 UTCJul 1, 22:00 UTC4h 35m
2026-07-01 CSN8172 ICN → CGQ Jul 1, 00:30 UTCJul 1, 00:45 UTC15m
2026-06-30 CSN8172 ICN → CGQ Jun 30, 17:45 UTCJun 30, 22:00 UTC4h 15m
2026-06-30 CSN8171 - Jun 30, 07:25 UTCJun 30, 15:15 UTC7h 50m
2026-06-28 CSN392 - Jun 28, 17:44 UTCJun 28, 19:44 UTC2h 0m
2026-06-28 CSN391 - Jun 28, 13:04 UTCJun 28, 15:40 UTC2h 35m
2026-06-26 CSN6042 FRA → URC Jun 26, 18:04 UTCJun 27, 00:05 UTC6h 0m
2026-06-26 CSN6041 URC → FRA Jun 26, 08:24 UTCJun 26, 14:44 UTC6h 20m
2026-06-25 CSN6041 URC → FRA Jun 25, 13:20 UTCJun 26, 13:15 UTC23h 55m
2026-06-25 CSN8066 - Jun 25, 11:39 UTCJun 26, 08:50 UTC21h 10m
2026-06-25 CSN8065 - Jun 25, 03:15 UTCJun 25, 03:34 UTC20m
2026-06-24 CSN8065 - Jun 24, 22:04 UTCJun 25, 02:39 UTC4h 35m
2026-06-23 CSN6036 - Jun 23, 23:24 UTCJun 24, 22:04 UTC22h 40m
2026-06-23 CSN6036 - Jun 23, 22:40 UTCJun 24, 00:30 UTC1h 50m
2026-06-23 CSN6035 - Jun 23, 04:29 UTCJun 23, 19:04 UTC14h 35m
2026-06-23 CSN8172 ICN → CGQ Jun 23, 01:15 UTCJun 23, 01:25 UTC10m
2026-06-22 CSN8172 ICN → CGQ Jun 22, 18:19 UTCJun 22, 22:40 UTC4h 20m
2026-06-22 CSN8171 - Jun 22, 07:10 UTCJun 22, 14:49 UTC7h 40m
2026-06-22 CSN8172 ICN → CGQ Jun 22, 00:40 UTCJun 22, 00:50 UTC10m
2026-06-21 CSN8172 ICN → CGQ Jun 21, 17:54 UTCJun 21, 22:10 UTC4h 15m
2026-06-21 CSN8171 - Jun 21, 07:09 UTCJun 21, 14:50 UTC7h 40m
2026-06-20 CSN8066 - Jun 20, 11:49 UTCJun 20, 13:39 UTC1h 50m
2026-06-20 CSN679 - Jun 20, 02:40 UTCJun 20, 02:59 UTC20m
2026-06-19 CSN679 - Jun 19, 17:34 UTCJun 20, 02:04 UTC8h 30m
2026-06-19 CSN6907 URC → PKX Jun 19, 12:04 UTCJun 19, 12:14 UTC10m
2026-06-18 CSN680 - Jun 18, 12:55 UTCJun 18, 17:40 UTC4h 45m
2026-06-18 CSN679 - Jun 18, 02:25 UTCJun 18, 02:45 UTC20m
2026-06-17 CSN679 - Jun 17, 03:25 UTCJun 17, 21:30 UTC18h 5m
2026-06-17 CSN6036 - Jun 17, 00:10 UTCJun 17, 21:30 UTC21h 20m
2026-06-16 CSN6036 - Jun 16, 22:35 UTCJun 17, 03:30 UTC4h 55m
2026-06-16 CSN6035 URC → IST Jun 16, 20:25 UTCJun 16, 20:45 UTC20m
2026-06-15 CSN680 - Jun 15, 12:49 UTCJun 15, 14:50 UTC2h 0m
2026-06-15 CSN679 - Jun 15, 02:35 UTCJun 15, 02:50 UTC15m
2026-06-06 CSN392 DAC → CAN Jun 6, 17:34 UTCJun 6, 18:19 UTC45m

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-20EW page for operator, model, and routing details .

Mode-S 78198D frequently asked

What is Mode-S code 78198D?
78198D is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20EW.
Where is Mode-S 78198D registered?
Mode-S code 78198D is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78198D broadcasting right now?
Yes. Mode-S 78198D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78198D, octal 36014615, decimal 7,870,861.
What flights does 78198D operate?
Mode-S 78198D has broadcast 20 distinct callsigns, including CSN690, CSN689, CSN654, CSN653, CSN679.