Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 12h ago
Flights observed
82
Distinct callsigns
20
Country
CN
Last broadcast
12h 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
CCA1897 - 3 2026-05-26
CCA1278 Air China 3 2026-05-07
CCA1277 Air China 3 2026-05-06
CCA1272 Air China 3 2026-05-28
CCA1271 Air China 3 2026-05-28
CCA4132 Air China 2 2026-05-01
CCA1300 Air China 2 2026-04-29
CCA1299 - 2 2026-04-29
CCA4148 Air China 1 2026-04-26
CCA4143 Air China 1 2026-04-26
CCA1955 Air China 1 2026-05-27
CCA1953 Air China 1 2026-04-20
CCA1915 Air China 1 2026-05-28
CCA1907 Air China 1 2026-04-29
CCA1853 Air China 1 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CCA1853 PEK → NGB Jun 2, 13:15 UTCJun 2, 13:25 UTC10m
2026-05-29 CCA903 PEK → SGN May 29, 12:55 UTCMay 30, 00:10 UTC11h 15m
2026-05-29 CCA1551 - May 29, 05:15 UTCMay 29, 05:25 UTC10m
2026-05-28 CCA1915 PEK → CGO May 28, 13:30 UTCMay 28, 13:45 UTC15m
2026-05-28 CCA1272 LHW → PEK May 28, 08:45 UTCMay 28, 09:05 UTC20m
2026-05-28 CCA1271 PEK → LHW May 28, 04:10 UTCMay 28, 04:40 UTC30m
2026-05-27 CCA1726 CAN → HGH May 27, 10:45 UTCMay 27, 10:55 UTC10m
2026-05-27 CCA1955 PEK → WGN May 27, 02:29 UTCMay 27, 02:49 UTC20m
2026-05-26 CCA824 CNX → PEK May 26, 16:00 UTCMay 26, 16:15 UTC15m
2026-05-26 CCA823 PEK → CNX May 26, 09:49 UTCMay 26, 14:09 UTC4h 20m
2026-05-26 CCA1897 - May 26, 04:30 UTCMay 26, 04:45 UTC15m
2026-05-21 CCA903 PEK → SGN May 21, 12:50 UTCMay 21, 13:01 UTC10m
2026-05-20 CCA1488 DZH → PEK May 20, 09:50 UTCMay 20, 10:00 UTC10m
2026-05-20 CCA1487 PEK → DZH May 20, 05:10 UTCMay 20, 05:25 UTC15m
2026-05-19 CCA903 PEK → SGN May 19, 12:45 UTCMay 19, 13:00 UTC15m
2026-05-18 CCA870 IKT → PEK May 18, 12:25 UTCMay 18, 12:40 UTC15m
2026-05-18 CCA869 PEK → IKT May 18, 05:20 UTCMay 18, 05:35 UTC15m
2026-05-17 CCA903 PEK → SGN May 17, 12:35 UTCMay 17, 13:01 UTC25m
2026-05-14 CCA824 CNX → PEK May 14, 16:00 UTCMay 14, 16:15 UTC15m
2026-05-14 CCA823 PEK → CNX May 14, 13:50 UTCMay 14, 14:15 UTC25m
2026-05-13 CCA870 IKT → PEK May 13, 10:30 UTCMay 13, 10:50 UTC20m
2026-05-13 CCA869 PEK → IKT May 13, 07:25 UTCMay 13, 07:50 UTC25m
2026-05-09 CCA1343 PEK → CSX May 9, 22:55 UTCMay 9, 23:09 UTC15m
2026-05-09 CCA824 CNX → PEK May 9, 16:00 UTCMay 9, 16:25 UTC25m
2026-05-09 CCA823 PEK → CNX May 9, 14:05 UTCMay 9, 14:25 UTC20m
2026-05-09 CCA823 PEK → CNX May 9, 09:55 UTCMay 9, 10:20 UTC25m
2026-05-09 CCA1399 PEK → CSX May 9, 02:10 UTCMay 9, 02:25 UTC15m
2026-05-08 CCA870 IKT → PEK May 8, 12:04 UTCMay 8, 12:20 UTC15m
2026-05-08 CCA870 IKT → PEK May 8, 10:19 UTCMay 8, 10:29 UTC10m
2026-05-08 CCA869 PEK → IKT May 8, 05:14 UTCMay 8, 07:44 UTC2h 30m
2026-05-07 CCA903 PEK → SGN May 7, 12:30 UTCMay 7, 12:50 UTC20m
2026-05-07 CCA1897 - May 7, 04:20 UTCMay 7, 04:30 UTC10m
2026-05-07 CCA1278 LHW → PEK May 7, 01:50 UTCMay 7, 02:10 UTC20m
2026-05-06 CCA1277 PEK → LHW May 6, 12:05 UTCMay 6, 12:35 UTC30m
2026-05-06 CCA1258 - May 6, 08:15 UTCMay 6, 08:35 UTC20m
2026-05-05 CCA1257 - May 5, 23:40 UTCMay 6, 00:01 UTC20m
2026-05-05 CCA1575 PEK → TAO May 5, 01:05 UTCMay 5, 01:15 UTC10m
2026-05-04 CCA870 IKT → PEK May 4, 12:20 UTCMay 4, 12:35 UTC15m
2026-05-04 CCA869 PEK → IKT May 4, 07:40 UTCMay 4, 08:00 UTC20m
2026-05-04 CCA869 PEK → IKT May 4, 05:25 UTCMay 4, 05:40 UTC15m
2026-05-03 CCA903 PEK → SGN May 3, 12:55 UTCMay 3, 13:20 UTC25m
2026-05-03 CCA1716 PEK → HGH May 3, 06:10 UTCMay 3, 06:20 UTC10m
2026-05-02 CCA824 CNX → PEK May 2, 16:05 UTCMay 2, 16:20 UTC15m
2026-05-02 CCA823 PEK → CNX May 2, 14:15 UTCMay 2, 14:40 UTC25m
2026-05-02 CCA823 PEK → CNX May 2, 09:55 UTCMay 2, 10:25 UTC30m
2026-05-02 CCA1897 - May 2, 04:20 UTCMay 2, 04:30 UTC10m
2026-05-02 CCA1206 XIY → PEK May 2, 02:05 UTCMay 2, 02:25 UTC20m
2026-05-01 CCA1205 PEK → XIY May 1, 12:15 UTCMay 1, 12:40 UTC25m
2026-05-01 CCA4132 PEK → CKG May 1, 04:40 UTCMay 1, 04:50 UTC10m
2026-04-30 CCA903 PEK → SGN Apr 30, 12:45 UTCApr 30, 12:55 UTC10m

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 12h 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.