Apparatus

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sensors Mode-S transponder

78021C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LIF · BOEING 747-400

Hex
78021C
Octal
36001034
Decimal
7,864,860
Country
CN
Tail
B-LIF
Type
B744
No current signal · last broadcast 12h ago
Flights observed
296
Distinct callsigns
20
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 78021C.

Country allocation

The ICAO 24-bit address 78021C 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
CPA015 Cathay Pacific 13 2026-07-04
CPA006 - 13 2026-07-03
CPA005 - 13 2026-05-30
CPA049 - 11 2026-06-30
CPA3244 - 10 2026-06-22
CPA3144 - 10 2026-07-02
CPA2074 - 9 2026-06-26
CPA048 - 9 2026-06-30
CPA3245 Cathay Pacific 7 2026-06-22
CPA3296 - 6 2026-07-04
CPA2097 - 6 2026-06-30
CPA2049 - 6 2026-07-13
CPA2048 - 6 2026-07-13
CPA3348 - 5 2026-07-12
CPA3255 - 5 2026-07-09
CPA3035 Cathay Pacific 5 2026-06-06
CPA3018 - 5 2026-07-02
CPA2098 - 5 2026-06-29
CPA2041 - 5 2026-07-13
CPA2040 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CPA2040 - Jul 13, 22:40 UTCJul 13, 23:15 UTC35m
2026-07-13 CPA2041 - Jul 13, 11:30 UTCJul 13, 20:45 UTC9h 15m
2026-07-13 CPA2041 - Jul 13, 10:45 UTCJul 13, 10:55 UTC10m
2026-07-13 CPA2048 - Jul 13, 05:01 UTCJul 13, 05:40 UTC40m
2026-07-13 CPA2048 - Jul 13, 04:00 UTCJul 13, 04:10 UTC10m
2026-07-13 CPA2049 - Jul 13, 00:50 UTCJul 13, 01:01 UTC10m
2026-07-12 CPA2049 - Jul 12, 23:45 UTCJul 12, 23:55 UTC10m
2026-07-12 CPA3348 - Jul 12, 16:50 UTCJul 12, 17:20 UTC30m
2026-07-12 CPA3348 - Jul 12, 15:55 UTCJul 12, 16:05 UTC10m
2026-07-12 CPA3348 - Jul 12, 08:25 UTCJul 12, 12:20 UTC3h 55m
2026-07-12 CPA3249 - Jul 12, 06:20 UTCJul 12, 06:45 UTC25m
2026-07-12 CPA3249 - Jul 12, 02:30 UTCJul 12, 02:45 UTC15m
2026-07-11 CPA3239 - Jul 11, 19:25 UTCJul 11, 19:45 UTC20m
2026-07-11 CPA3238 - Jul 11, 15:30 UTCJul 11, 15:40 UTC10m
2026-07-10 CPA3046 - Jul 10, 20:40 UTCJul 10, 21:10 UTC30m
2026-07-10 CPA3046 - Jul 10, 19:35 UTCJul 10, 19:45 UTC10m
2026-07-10 CPA3147 - Jul 10, 15:00 UTCJul 10, 15:10 UTC10m
2026-07-10 CPA3259 - Jul 10, 01:45 UTCJul 10, 09:15 UTC7h 30m
2026-07-09 CPA3255 - Jul 9, 18:45 UTCJul 9, 20:05 UTC1h 20m
2026-07-08 CPA3255 - Jul 8, 21:10 UTCJul 9, 20:05 UTC22h 55m
2026-07-08 CPA3342 - Jul 8, 17:05 UTCJul 8, 17:15 UTC10m
2026-07-08 CPA3342 - Jul 8, 09:20 UTCJul 8, 11:15 UTC1h 55m
2026-07-08 CPA3241 - Jul 8, 07:15 UTCJul 8, 07:35 UTC20m
2026-07-08 CPA3241 - Jul 8, 03:25 UTCJul 8, 03:40 UTC15m
2026-07-07 CPA3069 ANC → HKG Jul 7, 07:20 UTCJul 7, 17:30 UTC10h 10m
2026-07-07 CPA3069 ORD → ANC Jul 7, 00:05 UTCJul 7, 05:45 UTC5h 40m
2026-07-06 CPA098 ANC → HKG Jul 6, 13:45 UTCJul 6, 19:05 UTC5h 20m
2026-07-06 CPA098 ANC → HKG Jul 6, 02:50 UTCJul 6, 12:20 UTC9h 30m
2026-07-05 CPA085 JFK → HKG Jul 5, 08:00 UTCJul 5, 23:40 UTC15h 40m
2026-07-04 CPA3296 ANC → JFK Jul 4, 22:30 UTCJul 5, 05:35 UTC7h 5m
2026-07-04 CPA3296 HKG → ANC Jul 4, 11:25 UTCJul 4, 20:55 UTC9h 30m
2026-07-04 CPA015 NRT → TPE Jul 4, 07:10 UTCJul 4, 07:30 UTC20m
2026-07-04 CPA015 NRT → TPE Jul 4, 05:55 UTCJul 4, 06:20 UTC25m
2026-07-04 CPA015 NRT → TPE Jul 4, 03:10 UTCJul 4, 03:40 UTC30m
2026-07-04 CPA015 NRT → TPE Jul 4, 00:35 UTCJul 4, 01:55 UTC1h 20m
2026-07-03 CPA006 HKG → NRT Jul 3, 17:25 UTCJul 3, 21:15 UTC3h 50m
2026-07-03 CPA015 NRT → TPE Jul 3, 09:05 UTCJul 3, 09:30 UTC25m
2026-07-03 CPA015 NRT → TPE Jul 3, 08:05 UTCJul 3, 08:30 UTC25m
2026-07-03 CPA015D NRT → TPE Jul 3, 01:40 UTCJul 3, 04:50 UTC3h 10m
2026-07-02 CPA006 - Jul 2, 19:05 UTCJul 2, 22:45 UTC3h 40m
2026-07-02 CPA3144 - Jul 2, 15:45 UTCJul 2, 16:15 UTC30m
2026-07-02 CPA3144 - Jul 2, 11:20 UTCJul 2, 15:00 UTC3h 40m
2026-07-02 CPA043 - Jul 2, 04:20 UTCJul 2, 07:05 UTC2h 45m
2026-07-02 CPA043 - Jul 2, 03:25 UTCJul 2, 03:40 UTC15m
2026-07-02 CPA3018 - Jul 2, 00:20 UTCJul 2, 00:45 UTC25m
2026-07-01 CPA3018 - Jul 1, 14:05 UTCJul 1, 23:40 UTC9h 35m
2026-07-01 CPA017 MAA → CMB Jul 1, 13:05 UTCJul 1, 13:20 UTC15m
2026-07-01 CPA3253 - Jul 1, 02:35 UTCJul 1, 10:25 UTC7h 50m
2026-07-01 CPA050D - Jul 1, 01:40 UTCJul 1, 01:55 UTC15m
2026-06-30 CPA048 - Jun 30, 19:45 UTCJun 30, 21:05 UTC1h 20m

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

Mode-S 78021C frequently asked

What is Mode-S code 78021C?
78021C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LIF.
Where is Mode-S 78021C registered?
Mode-S code 78021C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78021C broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78021C, octal 36001034, decimal 7,864,860.
What flights does 78021C operate?
Mode-S 78021C has broadcast 20 distinct callsigns, including CPA015, CPA006, CPA005, CPA049, CPA3244.