Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7817AD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30AF · AIRBUS A-321neo

Hex
7817AD
Octal
36013655
Decimal
7,870,381
Country
CN
Tail
B-30AF
Type
A21N
No current signal · last broadcast 9h ago
Flights observed
56
Distinct callsigns
20
Country
CN
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 7817AD.

Country allocation

The ICAO 24-bit address 7817AD 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
CCA1369 Air China 5 2026-05-17
CCA1377 Air China 4 2026-05-21
CCA1879 Air China 3 2026-05-27
CCA1237 Air China 3 2026-05-21
CCA1913 Air China 2 2026-05-28
CCA1906 Air China 2 2026-05-30
CCA1704 Air China 2 2026-05-19
CCA1577 Air China 2 2026-05-09
CCA1405 Air China 2 2026-05-28
CCA1353 Air China 2 2026-06-02
CCA1238 Air China 2 2026-05-08
CCA1131 Air China 2 2026-05-20
CCA1129 Air China 2 2026-05-30
CCA4108 Air China 1 2026-04-30
CCA1937 Air China 1 2026-04-24
CCA1933 Air China 1 2026-04-23
CCA1905 Air China 1 2026-05-09
CCA1841 Air China 1 2026-05-30
CCA1817 Air China 1 2026-05-28
CCA1813 Air China 1 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 CCA1537 PEK → KHN Jun 3, 00:40 UTCJun 3, 00:50 UTC10m
2026-06-02 CCA1353 PEK → SYX Jun 2, 09:30 UTCJun 2, 09:45 UTC15m
2026-05-30 CCA1841 PEK → YTY May 30, 22:45 UTCMay 30, 22:55 UTC10m
2026-05-30 CCA1129 PEK → HLD May 30, 10:45 UTCMay 30, 11:00 UTC15m
2026-05-30 CCA1906 ZUH → PEK May 30, 05:20 UTCMay 30, 05:35 UTC15m
2026-05-29 CCA1720 CAN → HGH May 29, 08:10 UTCMay 29, 08:20 UTC10m
2026-05-28 CCA1405 PEK → CTU May 28, 23:40 UTCMay 29, 00:05 UTC25m
2026-05-28 CCA1913 PEK → CGO May 28, 06:50 UTCMay 28, 07:10 UTC20m
2026-05-28 CCA1817 PEK → NKG May 28, 00:25 UTCMay 28, 00:35 UTC10m
2026-05-27 CCA1913 PEK → CGO May 27, 07:15 UTCMay 27, 07:30 UTC15m
2026-05-27 CCA1879 PEK → YIW May 27, 00:30 UTCMay 27, 00:39 UTC10m
2026-05-26 CCA1463 PEK → KWE May 26, 08:19 UTCMay 26, 08:39 UTC20m
2026-05-25 CCA1461 PEK → KWE May 25, 23:19 UTCMay 25, 23:45 UTC25m
2026-05-21 CCA1237 PEK → HMI May 21, 22:25 UTCMay 21, 22:45 UTC20m
2026-05-21 CCA1377 PEK → SYX May 21, 07:50 UTCMay 21, 08:00 UTC10m
2026-05-20 CCA1131 PEK → HLD May 20, 23:50 UTCMay 21, 00:10 UTC20m
2026-05-19 CCA1704 PEK → HGH May 19, 23:45 UTCMay 19, 23:55 UTC10m
2026-05-19 CCA1607 PEK → HRB May 19, 06:45 UTCMay 19, 06:55 UTC10m
2026-05-19 CCA1651 PEK → SHE May 19, 00:35 UTCMay 19, 00:45 UTC10m
2026-05-18 CCA1129 PEK → HLD May 18, 10:35 UTCMay 18, 10:50 UTC15m
2026-05-17 CCA1369 PEK → SYX May 17, 23:55 UTCMay 18, 00:15 UTC20m
2026-05-10 CCA1545 PEK → YNT May 10, 00:30 UTCMay 10, 00:39 UTC10m
2026-05-09 CCA1577 PEK → KHN May 9, 09:30 UTCMay 9, 09:40 UTC10m
2026-05-09 CCA1906 ZUH → PEK May 9, 05:15 UTCMay 9, 05:25 UTC10m
2026-05-09 CCA1905 PEK → ZUH May 9, 00:55 UTCMay 9, 01:10 UTC15m
2026-05-08 CCA1238 HMI → PEK May 8, 05:29 UTCMay 8, 05:44 UTC15m
2026-05-07 CCA1237 PEK → HMI May 7, 22:25 UTCMay 7, 22:45 UTC20m
2026-05-07 CCA1577 PEK → KHN May 7, 09:20 UTCMay 7, 09:30 UTC10m
2026-05-06 CCA1405 PEK → CTU May 6, 23:45 UTCMay 7, 00:05 UTC20m
2026-05-06 CCA1813 PEK → HFE May 6, 00:10 UTCMay 6, 00:20 UTC10m
2026-05-05 CCA1353 PEK → SYX May 5, 06:45 UTCMay 5, 06:55 UTC10m
2026-05-04 CCA1131 PEK → HLD May 4, 23:50 UTCMay 5, 00:10 UTC20m
2026-05-04 CCA1238 HMI → PEK May 4, 05:15 UTCMay 4, 05:30 UTC15m
2026-05-03 CCA1237 PEK → HMI May 3, 22:30 UTCMay 3, 22:49 UTC20m
2026-05-03 CCA1377 PEK → SYX May 3, 07:35 UTCMay 3, 07:50 UTC15m
2026-05-03 CCA1879 PEK → YIW May 3, 00:40 UTCMay 3, 00:50 UTC10m
2026-05-02 CCA1377 PEK → SYX May 2, 07:20 UTCMay 2, 07:45 UTC25m
2026-05-02 CCA1879 PEK → YIW May 2, 00:35 UTCMay 2, 00:45 UTC10m
2026-04-30 CCA4108 PEK → CTU Apr 30, 06:50 UTCApr 30, 07:00 UTC10m
2026-04-29 CCA1571 PEK → TAO Apr 29, 10:55 UTCApr 29, 11:10 UTC15m
2026-04-28 CCA1369 PEK → SYX Apr 28, 23:40 UTCApr 29, 00:05 UTC25m
2026-04-28 CCA1288 URC → PEK Apr 28, 17:05 UTCApr 28, 17:25 UTC20m
2026-04-28 CCA1287 PEK → URC Apr 28, 11:00 UTCApr 28, 11:20 UTC20m
2026-04-27 CCA1369 PEK → SYX Apr 27, 23:45 UTCApr 28, 00:05 UTC20m
2026-04-27 CCA1377 PEK → SYX Apr 27, 07:30 UTCApr 27, 07:45 UTC15m
2026-04-26 CCA1362 HAK → PEK Apr 26, 08:40 UTCApr 26, 08:50 UTC10m
2026-04-26 CCA1361 PEK → HAK Apr 26, 00:25 UTCApr 26, 00:45 UTC20m
2026-04-24 CCA1937 PEK → KWL Apr 24, 09:50 UTCApr 24, 10:10 UTC20m
2026-04-23 CCA1335 PEK → NNG Apr 23, 23:25 UTCApr 23, 23:50 UTC25m
2026-04-23 CCA1933 PEK → NNG Apr 23, 07:50 UTCApr 23, 08:05 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-30AF page for operator, model, and routing details .

Mode-S 7817AD frequently asked

What is Mode-S code 7817AD?
7817AD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30AF.
Where is Mode-S 7817AD registered?
Mode-S code 7817AD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7817AD broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7817AD, octal 36013655, decimal 7,870,381.
What flights does 7817AD operate?
Mode-S 7817AD has broadcast 20 distinct callsigns, including CCA1369, CCA1377, CCA1879, CCA1237, CCA1913.