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 1h ago
Flights observed
163
Distinct callsigns
20
Country
CN
Last broadcast
1h 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
CPA005 - 12 2026-05-29
CPA3244 Cathay Pacific 8 2026-05-11
CPA3144 Cathay Pacific 8 2026-05-20
CPA049 Cathay Pacific 8 2026-05-24
CPA006 - 8 2026-05-29
CPA048 Cathay Pacific 7 2026-05-28
CPA2074 Cathay Pacific 6 2026-05-01
CPA3245 Cathay Pacific 5 2026-05-11
CPA2033 Cathay Pacific 5 2026-05-19
CPA2049 Cathay Pacific 4 2026-05-24
CPA2048 Cathay Pacific 4 2026-05-25
CPA2044 - 4 2026-04-30
CPA2035 Cathay Pacific 4 2026-04-15
CPA050 Cathay Pacific 4 2026-05-15
CPA3035 Cathay Pacific 3 2026-05-21
CPA3018 - 3 2026-05-14
CPA2098 Cathay Pacific 3 2026-04-19
CPA2097 Cathay Pacific 3 2026-04-21
CPA2073 Cathay Pacific 3 2026-05-01
CPA2040 Cathay Pacific 3 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CPA005D NRT → TPE May 30, 04:30 UTCMay 30, 05:00 UTC30m
2026-05-29 CPA006 - May 29, 21:55 UTCMay 30, 01:30 UTC3h 35m
2026-05-29 CPA005 - May 29, 05:10 UTCMay 29, 06:25 UTC1h 15m
2026-05-28 CPA005 - May 28, 23:40 UTCMay 29, 02:50 UTC3h 10m
2026-05-28 CPA006 HKG → NRT May 28, 17:30 UTCMay 28, 21:10 UTC3h 40m
2026-05-28 CPA048 HAN → HKG May 28, 13:45 UTCMay 28, 14:20 UTC35m
2026-05-28 CPA048 HAN → HKG May 28, 12:45 UTCMay 28, 13:00 UTC15m
2026-05-28 CPA3243 HKG → HAN May 28, 09:15 UTCMay 28, 09:55 UTC40m
2026-05-28 CPA3243 HKG → HAN May 28, 08:30 UTCMay 28, 08:45 UTC15m
2026-05-27 CPA040 - May 27, 17:35 UTCMay 27, 21:20 UTC3h 45m
2026-05-27 CPA040 - May 27, 16:00 UTCMay 27, 16:10 UTC10m
2026-05-27 CPA045 - May 27, 12:55 UTCMay 27, 13:15 UTC20m
2026-05-27 CPA045 - May 27, 09:40 UTCMay 27, 11:15 UTC1h 35m
2026-05-27 CPA045 - May 27, 07:45 UTCMay 27, 07:55 UTC10m
2026-05-25 CPA2048 HAN → HKG May 25, 04:45 UTCMay 25, 05:20 UTC35m
2026-05-24 CPA2049 HKG → HAN May 24, 23:40 UTCMay 24, 23:46 UTC6m
2026-05-24 CPA048 HAN → HKG May 24, 13:40 UTCMay 24, 14:10 UTC30m
2026-05-24 CPA048 HAN → HKG May 24, 08:00 UTCMay 24, 09:05 UTC1h 5m
2026-05-24 CPA049 HKG → DAC May 24, 03:40 UTCMay 24, 05:15 UTC1h 35m
2026-05-24 CPA049 HKG → DAC May 24, 01:45 UTCMay 24, 02:00 UTC15m
2026-05-23 CPA053 CKG → HKG May 23, 21:40 UTCMay 23, 22:10 UTC30m
2026-05-23 CPA3262 HKG → CKG May 23, 14:10 UTCMay 23, 14:20 UTC10m
2026-05-23 CPA005 - May 23, 09:20 UTCMay 23, 10:35 UTC1h 15m
2026-05-23 CPA005D NRT → TPE May 23, 03:35 UTCMay 23, 06:45 UTC3h 10m
2026-05-22 CPA006 HKG → NRT May 22, 20:20 UTCMay 23, 00:05 UTC3h 45m
2026-05-22 CPA2048 HAN → HKG May 22, 15:05 UTCMay 22, 15:45 UTC40m
2026-05-22 CPA2049 HKG → HAN May 22, 10:00 UTCMay 22, 10:15 UTC15m
2026-05-21 CPA3259 PVG → HKG May 21, 23:15 UTCMay 22, 06:35 UTC7h 20m
2026-05-21 CPA3035 KIX → HKG May 21, 19:50 UTCMay 21, 20:05 UTC15m
2026-05-21 CPA3035 KIX → HKG May 21, 16:45 UTCMay 21, 19:15 UTC2h 30m
2026-05-21 CPA3035 KIX → HKG May 21, 13:35 UTCMay 21, 14:50 UTC1h 15m
2026-05-21 CPA3032 HKG → ICN May 21, 08:45 UTCMay 21, 11:45 UTC3h 0m
2026-05-20 CPA3255 PVG → HKG May 20, 23:10 UTCMay 21, 05:55 UTC6h 45m
2026-05-20 CPA3342 - May 20, 19:30 UTCMay 20, 19:45 UTC15m
2026-05-20 CPA3342 - May 20, 11:30 UTCMay 20, 13:10 UTC1h 40m
2026-05-20 CPA3241 HKG → DEL May 20, 05:25 UTCMay 20, 05:40 UTC15m
2026-05-20 CPA3144 MAA → HKG May 20, 01:00 UTCMay 20, 01:35 UTC35m
2026-05-19 CPA3144 MAA → HKG May 19, 15:05 UTCMay 19, 22:50 UTC7h 45m
2026-05-19 CPA2033 HKG → HKG May 19, 13:25 UTCMay 19, 13:35 UTC10m
2026-05-18 CPA044 BOM → HKG May 18, 22:45 UTCMay 18, 23:20 UTC35m
2026-05-18 CPA044 BOM → HKG May 18, 19:50 UTCMay 18, 20:45 UTC55m
2026-05-18 CPA044 BOM → HKG May 18, 18:05 UTCMay 18, 18:20 UTC15m
2026-05-18 CPA049 HKG → DAC May 18, 11:40 UTCMay 18, 11:50 UTC10m
2026-05-18 CPA049 HKG → DAC May 18, 09:40 UTCMay 18, 09:55 UTC15m
2026-05-18 CPA081 ORD → HKG May 18, 01:55 UTCMay 18, 02:20 UTC25m
2026-05-17 CPA081 ORD → HKG May 17, 16:25 UTCMay 18, 01:25 UTC9h 0m
2026-05-17 CPA081 ORD → HKG May 17, 09:25 UTCMay 17, 15:10 UTC5h 45m
2026-05-17 CPA080 ANC → ORD May 17, 01:00 UTCMay 17, 06:20 UTC5h 20m
2026-05-16 CPA080 ANC → ORD May 16, 11:05 UTCMay 16, 20:40 UTC9h 35m
2026-05-16 CPA051 CGO → HKG May 16, 05:05 UTCMay 16, 05:30 UTC25m

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 1h 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 CPA005, CPA3244, CPA3144, CPA049, CPA006.