Apparatus

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sensors Mode-S transponder

780BF4

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1946 · BOEING 737-800

Hex
780BF4
Octal
36005764
Decimal
7,867,380
Country
CN
Tail
B-1946
Type
B738
No current signal · last broadcast 2h ago
Flights observed
133
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 780BF4.

Country allocation

The ICAO 24-bit address 780BF4 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
CCA903 Air China 8 2026-05-29
CCA824 Air China 8 2026-05-26
CCA823 Air China 8 2026-05-26
CCA870 Air China 5 2026-05-18
CCA869 Air China 5 2026-05-18
CCA764 - 5 2026-07-07
CCA1278 - 5 2026-07-15
CCA763 - 4 2026-07-07
CCA1277 - 4 2026-06-30
CCA8621 - 3 2026-07-12
CCA4132 - 3 2026-06-28
CCA1897 - 3 2026-05-26
CCA132 - 3 2026-07-05
CCA131 - 3 2026-07-05
CCA1272 Air China 3 2026-05-28
CCA1271 Air China 3 2026-05-28
CCA8659 - 2 2026-07-04
CCA8630 - 2 2026-07-09
CCA8608 - 2 2026-06-26
CCA8375 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CCA9659 - Jul 17, 23:25 UTCJul 17, 23:50 UTC25m
2026-07-17 CCA9528 - Jul 17, 12:40 UTCJul 17, 12:50 UTC10m
2026-07-17 CCA9527 - Jul 17, 05:25 UTCJul 17, 05:39 UTC15m
2026-07-16 CCA8902 - Jul 16, 12:20 UTCJul 16, 12:30 UTC10m
2026-07-15 CCA1278 - Jul 15, 02:05 UTCJul 15, 02:25 UTC20m
2026-07-14 CCA8375 - Jul 14, 11:50 UTCJul 14, 12:10 UTC20m
2026-07-12 CCA8622 - Jul 12, 04:01 UTCJul 12, 04:10 UTC10m
2026-07-12 CCA8621 - Jul 12, 01:25 UTCJul 12, 01:40 UTC15m
2026-07-10 CCA8363 - Jul 10, 10:45 UTCJul 10, 10:55 UTC10m
2026-07-09 CCA8630 - Jul 9, 15:00 UTCJul 9, 15:10 UTC10m
2026-07-07 CCA764 - Jul 7, 13:40 UTCJul 7, 13:50 UTC10m
2026-07-07 CCA764 - Jul 7, 10:45 UTCJul 7, 11:00 UTC15m
2026-07-07 CCA763 - Jul 7, 08:25 UTCJul 7, 09:10 UTC45m
2026-07-05 CCA8630 - Jul 5, 16:35 UTCJul 5, 16:50 UTC15m
2026-07-05 CCA8629 - Jul 5, 12:15 UTCJul 5, 12:30 UTC15m
2026-07-05 CCA132 - Jul 5, 06:40 UTCJul 5, 07:00 UTC20m
2026-07-05 CCA131 - Jul 5, 04:25 UTCJul 5, 04:50 UTC25m
2026-07-04 CCA8660 - Jul 4, 10:20 UTCJul 4, 10:30 UTC10m
2026-07-04 CCA8659 - Jul 4, 05:55 UTCJul 4, 06:05 UTC10m
2026-07-04 CCA8654 - Jul 4, 02:25 UTCJul 4, 02:40 UTC15m
2026-07-01 CCA8376 - Jul 1, 02:35 UTCJul 1, 02:50 UTC15m
2026-06-30 CCA1277 - Jun 30, 14:55 UTCJun 30, 15:20 UTC25m
2026-06-30 CCA1487 - Jun 30, 04:55 UTCJun 30, 05:20 UTC25m
2026-06-29 CCA1135 - Jun 29, 23:09 UTCJun 29, 23:25 UTC15m
2026-06-29 CCA1269 - Jun 29, 09:54 UTCJun 29, 10:15 UTC20m
2026-06-28 CCA1438 - Jun 28, 10:04 UTCJun 28, 10:30 UTC25m
2026-06-28 CCA4132 - Jun 28, 04:10 UTCJun 28, 04:29 UTC20m
2026-06-28 CCA1278 - Jun 28, 01:55 UTCJun 28, 02:10 UTC15m
2026-06-27 CCA8375 - Jun 27, 10:54 UTCJun 27, 11:09 UTC15m
2026-06-26 CCA8621 - Jun 26, 22:55 UTCJun 26, 23:09 UTC15m
2026-06-26 CCA8615 - Jun 26, 12:19 UTCJun 26, 12:29 UTC10m
2026-06-26 CCA8608 - Jun 26, 07:50 UTCJun 26, 08:05 UTC15m
2026-06-24 CCA132 - Jun 24, 06:35 UTCJun 24, 06:45 UTC10m
2026-06-24 CCA131 - Jun 24, 04:24 UTCJun 24, 04:44 UTC20m
2026-06-23 CCA8659 - Jun 23, 06:29 UTCJun 23, 06:44 UTC15m
2026-06-19 CCA764 - Jun 19, 10:44 UTCJun 19, 10:59 UTC15m
2026-06-19 CCA763 - Jun 19, 08:20 UTCJun 19, 08:59 UTC40m
2026-06-16 CCA132 - Jun 16, 06:50 UTCJun 16, 07:05 UTC15m
2026-06-16 CCA131 - Jun 16, 04:30 UTCJun 16, 04:50 UTC20m
2026-06-15 CCA764 - Jun 15, 11:19 UTCJun 15, 11:39 UTC20m
2026-06-15 CCA763 - Jun 15, 08:49 UTCJun 15, 09:15 UTC25m
2026-06-13 CCA8663 PKX → YIH Jun 13, 03:10 UTCJun 13, 03:25 UTC15m
2026-06-12 CCA8608 WUA → PKX Jun 12, 08:50 UTCJun 12, 09:15 UTC25m
2026-06-11 CCA764 HKG → PKX Jun 11, 10:05 UTCJun 12, 09:00 UTC22h 55m
2026-06-10 CCA763 PKX → HKG Jun 10, 13:20 UTCJun 11, 07:55 UTC18h 35m
2026-06-09 CCA1269 PEK → ENY Jun 9, 10:25 UTCJun 9, 14:15 UTC3h 50m
2026-06-09 CCA1559 PEK → YNT Jun 9, 04:40 UTCJun 9, 04:50 UTC10m
2026-06-08 CCA1206 XIY → PEK Jun 8, 15:10 UTCJun 9, 02:10 UTC11h 0m
2026-06-08 CCA1513 PEK → NTG Jun 8, 07:25 UTCJun 8, 07:35 UTC10m
2026-06-06 CCA8621 PKX → KWL Jun 6, 22:44 UTCJun 6, 23:00 UTC15m

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-1946 page for operator, model, and routing details .

Mode-S 780BF4 frequently asked

What is Mode-S code 780BF4?
780BF4 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1946.
Where is Mode-S 780BF4 registered?
Mode-S code 780BF4 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780BF4 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 780BF4, octal 36005764, decimal 7,867,380.
What flights does 780BF4 operate?
Mode-S 780BF4 has broadcast 20 distinct callsigns, including CCA903, CCA824, CCA823, CCA870, CCA869.