Apparatus

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sensors Mode-S transponder

7817E2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30C2 · AIRBUS A-320neo

Hex
7817E2
Octal
36013742
Decimal
7,870,434
Country
CN
Tail
B-30C2
Type
A20N
No current signal · last broadcast 11d ago
Flights observed
65
Distinct callsigns
20
Country
CN
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 7817E2.

Country allocation

The ICAO 24-bit address 7817E2 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
CCA4186 Air China 9 2026-07-21
CCA1895 Air China 6 2026-07-18
CCA4185 - 4 2026-07-10
CCA1470 - 4 2026-07-11
CCA1424 Air China 4 2026-07-18
CCA4166 Air China 3 2026-05-08
CCA1469 - 3 2026-07-10
CCA1423 - 3 2026-07-18
CCA4165 Air China 2 2026-05-05
CCA4162 Air China 2 2026-05-08
CCA1129 Air China 2 2026-05-21
CCA9724 Air China 1 2026-07-19
CCA9723 Air China 1 2026-07-19
CCA9633 - 1 2026-07-20
CCA4540 - 1 2026-06-05
CCA4338 Air China 1 2026-04-15
CCA4164 Air China 1 2026-05-06
CCA4112 Air China 1 2026-07-23
CCA2757 - 1 2026-06-24
CCA1933 - 1 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 CCA4112 TFU → LXA Jul 23, 06:15 UTCJul 23, 06:35 UTC20m
2026-07-21 CCA4186 PEK → CTU Jul 21, 02:40 UTCJul 21, 03:10 UTC30m
2026-07-20 CCA9633 - Jul 20, 05:05 UTCJul 20, 05:25 UTC20m
2026-07-19 CCA1825 - Jul 19, 23:25 UTCJul 19, 23:35 UTC10m
2026-07-19 CCA9724 JHG → PEK Jul 19, 09:00 UTCJul 19, 09:25 UTC25m
2026-07-19 CCA9723 PEK → JHG Jul 19, 00:45 UTCJul 19, 01:10 UTC25m
2026-07-18 CCA1424 JHG → PEK Jul 18, 16:05 UTCJul 18, 16:30 UTC25m
2026-07-18 CCA1423 - Jul 18, 08:30 UTCJul 18, 13:20 UTC4h 50m
2026-07-18 CCA1895 PEK → SQD Jul 18, 00:25 UTCJul 18, 00:35 UTC10m
2026-07-17 CCA1424 - Jul 17, 14:39 UTCJul 17, 15:10 UTC30m
2026-07-17 CCA1895 - Jul 17, 00:30 UTCJul 17, 07:25 UTC6h 55m
2026-07-13 CCA4186 - Jul 13, 02:10 UTCJul 13, 02:30 UTC20m
2026-07-12 CCA1933 - Jul 12, 07:50 UTCJul 12, 08:15 UTC25m
2026-07-12 CCA1232 - Jul 12, 04:15 UTCJul 12, 04:45 UTC30m
2026-07-11 CCA1231 - Jul 11, 23:35 UTCJul 11, 23:55 UTC20m
2026-07-11 CCA1460 - Jul 11, 18:40 UTCJul 11, 18:50 UTC10m
2026-07-11 CCA1459 - Jul 11, 11:10 UTCJul 11, 11:30 UTC20m
2026-07-11 CCA1470 - Jul 11, 06:30 UTCJul 11, 07:00 UTC30m
2026-07-10 CCA1469 - Jul 10, 23:00 UTCJul 10, 23:25 UTC25m
2026-07-10 CCA4185 - Jul 10, 14:10 UTCJul 10, 14:35 UTC25m
2026-06-24 CCA2757 - Jun 24, 11:14 UTCJun 24, 13:14 UTC2h 0m
2026-06-20 CCA4186 - Jun 20, 02:19 UTCJun 20, 02:44 UTC25m
2026-06-19 CCA1222 - Jun 19, 14:24 UTCJun 19, 14:44 UTC20m
2026-06-13 CCA1413 PEK → KMG Jun 13, 07:25 UTCJun 13, 07:50 UTC25m
2026-06-13 CCA1895 PEK → SQD Jun 13, 00:10 UTCJun 13, 00:20 UTC10m
2026-06-12 CCA4185 CTU → PEK Jun 12, 14:01 UTCJun 12, 14:20 UTC20m
2026-06-12 CCA4186 PEK → CTU Jun 12, 02:10 UTCJun 12, 02:30 UTC20m
2026-06-11 CCA1811 PEK → XMN Jun 11, 10:30 UTCJun 11, 14:30 UTC4h 0m
2026-06-11 CCA1470 - Jun 11, 06:15 UTCJun 11, 06:45 UTC30m
2026-06-10 CCA1469 - Jun 10, 23:15 UTCJun 10, 23:35 UTC20m
2026-06-10 CCA4185 CTU → PEK Jun 10, 13:55 UTCJun 10, 14:25 UTC30m
2026-06-10 CCA4186 PEK → CTU Jun 10, 02:15 UTCJun 10, 02:35 UTC20m
2026-06-08 CCA4186 PEK → CTU Jun 8, 02:30 UTCJun 8, 02:50 UTC20m
2026-06-06 CCA4186 PEK → CTU Jun 6, 02:10 UTCJun 6, 02:30 UTC20m
2026-06-05 CCA4185 CTU → PEK Jun 5, 16:30 UTCJun 5, 16:50 UTC20m
2026-06-05 CCA4540 - Jun 5, 10:55 UTCJun 5, 11:05 UTC10m
2026-06-04 CCA4186 PEK → CTU Jun 4, 02:15 UTCJun 4, 02:40 UTC25m
2026-06-02 CCA1369 PEK → SYX Jun 2, 23:25 UTCJun 3, 05:55 UTC6h 30m
2026-05-31 CCA1895 PEK → SQD May 31, 00:10 UTCMay 31, 00:20 UTC10m
2026-05-30 CCA1424 JHG → PEK May 30, 14:40 UTCMay 30, 14:55 UTC15m
2026-05-30 CCA1423 PEK → JHG May 30, 06:40 UTCMay 30, 06:55 UTC15m
2026-05-29 CCA1464 KWE → PEK May 29, 14:40 UTCMay 29, 14:50 UTC10m
2026-05-29 CCA1463 PEK → KWE May 29, 08:25 UTCMay 29, 08:45 UTC20m
2026-05-27 CCA4186 PEK → CTU May 27, 02:39 UTCMay 27, 02:59 UTC20m
2026-05-26 CCA1895 PEK → SQD May 26, 00:19 UTCMay 26, 00:29 UTC10m
2026-05-21 CCA1131 PEK → HLD May 21, 23:50 UTCMay 22, 00:05 UTC15m
2026-05-21 CCA1129 PEK → HLD May 21, 10:35 UTCMay 21, 10:50 UTC15m
2026-05-21 CCA1400 CSX → PEK May 21, 07:55 UTCMay 21, 08:10 UTC15m
2026-05-21 CCA1399 PEK → CSX May 21, 02:15 UTCMay 21, 02:30 UTC15m
2026-05-20 CCA1470 - May 20, 06:40 UTCMay 20, 07:00 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-30C2 page for operator, model, and routing details .

Mode-S 7817E2 frequently asked

What is Mode-S code 7817E2?
7817E2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30C2.
Where is Mode-S 7817E2 registered?
Mode-S code 7817E2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817E2 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7817E2, octal 36013742, decimal 7,870,434.
What flights does 7817E2 operate?
Mode-S 7817E2 has broadcast 20 distinct callsigns, including CCA4186, CCA1895, CCA4185, CCA1470, CCA1424.