Apparatus

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sensors Mode-S transponder

780491

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5391 · BOEING 737-800

Hex
780491
Octal
36002221
Decimal
7,865,489
Country
CN
Tail
B-5391
Type
B738
No current signal · last broadcast 1d ago
Flights observed
84
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 780491.

Country allocation

The ICAO 24-bit address 780491 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
CCA2820 - 3 2026-07-12
CCA2817 - 3 2026-07-11
CCA2814 Air China 3 2026-05-12
CCA2809 - 3 2026-07-07
CCA1283 - 3 2026-06-04
CCA2924 - 2 2026-07-17
CCA2819 - 2 2026-07-12
CCA2818 - 2 2026-07-12
CCA2810 - 2 2026-07-07
CCA1919 Air China 2 2026-05-04
CCA1819 Air China 2 2026-06-09
CCA171 - 2 2026-07-05
CCA1487 Air China 2 2026-06-11
CCA1206 Air China 2 2026-06-12
CCA1205 Air China 2 2026-06-11
CCA1135 - 2 2026-06-04
CCA103 - 2 2026-07-06
CCA4132 Air China 1 2026-06-08
CCA2923 - 1 2026-07-10
CCA2896 - 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 CCA2924 - Jul 17, 15:15 UTCJul 17, 15:35 UTC20m
2026-07-13 CCA2890 - Jul 13, 11:45 UTCJul 13, 11:55 UTC10m
2026-07-12 CCA2820 - Jul 12, 08:55 UTCJul 12, 09:05 UTC10m
2026-07-12 CCA2819 - Jul 12, 07:05 UTCJul 12, 07:15 UTC10m
2026-07-12 CCA2818 - Jul 12, 00:35 UTCJul 12, 00:45 UTC10m
2026-07-11 CCA2817 - Jul 11, 14:00 UTCJul 11, 14:10 UTC10m
2026-07-10 CCA2923 - Jul 10, 11:50 UTCJul 10, 16:45 UTC4h 55m
2026-07-08 CCA2924 - Jul 8, 15:30 UTCJul 8, 15:50 UTC20m
2026-07-07 CCA2810 - Jul 7, 14:40 UTCJul 7, 15:00 UTC20m
2026-07-07 CCA2809 - Jul 7, 07:20 UTCJul 7, 07:40 UTC20m
2026-07-06 CCA104 - Jul 6, 05:10 UTCJul 6, 05:25 UTC15m
2026-07-06 CCA103 - Jul 6, 03:00 UTCJul 6, 03:50 UTC50m
2026-07-05 CCA103 - Jul 5, 04:25 UTCJul 6, 03:50 UTC23h 25m
2026-07-05 CCA171 - Jul 5, 01:50 UTCJul 5, 02:15 UTC25m
2026-07-01 CCA2809 - Jul 1, 05:40 UTCJul 1, 06:00 UTC20m
2026-07-01 CCA2818 - Jul 1, 00:45 UTCJul 1, 00:55 UTC10m
2026-06-30 CCA2817 - Jun 30, 18:00 UTCJun 30, 18:10 UTC10m
2026-06-30 CCA2817 - Jun 30, 15:15 UTCJun 30, 15:30 UTC15m
2026-06-24 CCA2810 URC → TSN Jun 24, 13:44 UTCJun 24, 14:04 UTC20m
2026-06-24 CCA2809 TSN → URC Jun 24, 05:34 UTCJun 24, 05:49 UTC15m
2026-06-21 CCA2820 - Jun 21, 09:00 UTCJun 21, 09:10 UTC10m
2026-06-19 CCA172 - Jun 19, 04:00 UTCJun 19, 04:14 UTC15m
2026-06-19 CCA171 - Jun 19, 02:04 UTCJun 19, 02:35 UTC30m
2026-06-17 CCA1353 PEK → SYX Jun 17, 09:15 UTCJun 17, 12:30 UTC3h 15m
2026-06-12 CCA1868 FUG → PEK Jun 12, 09:10 UTCJun 12, 09:25 UTC15m
2026-06-12 CCA1867 PEK → FUG Jun 12, 05:10 UTCJun 12, 05:25 UTC15m
2026-06-12 CCA1206 XIY → PEK Jun 12, 01:40 UTCJun 12, 02:05 UTC25m
2026-06-11 CCA1205 PEK → XIY Jun 11, 12:15 UTCJun 11, 12:25 UTC10m
2026-06-11 CCA1487 PEK → DZH Jun 11, 04:55 UTCJun 11, 05:15 UTC20m
2026-06-11 CCA1545 PEK → YNT Jun 11, 00:30 UTCJun 11, 00:40 UTC10m
2026-06-10 CCA1496 YBP → PEK Jun 10, 14:05 UTCJun 10, 14:30 UTC25m
2026-06-10 CCA1495 PEK → YBP Jun 10, 08:25 UTCJun 10, 08:45 UTC20m
2026-06-09 CCA1819 PEK → NKG Jun 9, 13:10 UTCJun 9, 13:20 UTC10m
2026-06-09 CCA1446 KMG → PEK Jun 9, 10:05 UTCJun 9, 10:30 UTC25m
2026-06-09 CCA1445 PEK → KMG Jun 9, 02:45 UTCJun 9, 03:05 UTC20m
2026-06-08 CCA4132 PEK → CKG Jun 8, 04:10 UTCJun 8, 04:35 UTC25m
2026-06-08 CCA1206 XIY → PEK Jun 8, 01:40 UTCJun 8, 02:10 UTC30m
2026-06-07 CCA1205 PEK → XIY Jun 7, 12:10 UTCJun 7, 12:25 UTC15m
2026-06-06 CCA1228 - Jun 6, 08:10 UTCJun 6, 08:30 UTC20m
2026-06-06 CCA1227 - Jun 6, 04:35 UTCJun 6, 05:00 UTC25m
2026-06-05 CCA1488 DZH → PEK Jun 5, 09:55 UTCJun 5, 10:05 UTC10m
2026-06-05 CCA1487 PEK → DZH Jun 5, 05:10 UTCJun 5, 05:25 UTC15m
2026-06-04 CCA1135 - Jun 4, 23:10 UTCJun 4, 23:20 UTC10m
2026-06-04 CCA1283 - Jun 4, 09:20 UTCJun 4, 09:45 UTC25m
2026-06-04 CCA1805 PEK → JGS Jun 4, 00:30 UTCJun 4, 00:40 UTC10m
2026-06-03 CCA1541 PEK → NGB Jun 3, 06:30 UTCJun 3, 06:40 UTC10m
2026-06-02 CCA1135 - Jun 2, 23:10 UTCJun 2, 23:20 UTC10m
2026-05-29 CCA1841 PEK → YTY May 29, 23:15 UTCMay 29, 23:25 UTC10m
2026-05-29 CCA1635 PEK → SHE May 29, 11:05 UTCMay 29, 11:15 UTC10m
2026-05-29 CCA1434 KWE → PEK May 29, 08:15 UTCMay 29, 08:35 UTC20m

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-5391 page for operator, model, and routing details .

Mode-S 780491 frequently asked

What is Mode-S code 780491?
780491 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5391.
Where is Mode-S 780491 registered?
Mode-S code 780491 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780491 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780491, octal 36002221, decimal 7,865,489.
What flights does 780491 operate?
Mode-S 780491 has broadcast 20 distinct callsigns, including CCA2820, CCA2817, CCA2814, CCA2809, CCA1283.