Apparatus

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sensors Mode-S transponder

78217F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-919X · COMAC C-919

Hex
78217F
Octal
36020577
Decimal
7,872,895
Country
CN
Tail
B-919X
Type
C919
No current signal · last broadcast 13d ago
Flights observed
46
Distinct callsigns
20
Country
CN
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S 78217F.

Country allocation

The ICAO 24-bit address 78217F 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
CCA8204 Air China 4 2026-05-22
CCA8212 Air China 3 2026-05-21
CCA101 Air China 3 2026-05-03
CCA4135 Air China 2 2026-05-08
CCA1831 Air China 2 2026-05-03
CCA1437 Air China 2 2026-05-07
CCA1431 Air China 2 2026-05-20
CCA1411 Air China 2 2026-05-04
CCA1359 Air China 2 2026-04-27
CCA1236 Air China 2 2026-05-07
CCA1235 Air China 2 2026-05-07
CCA1230 Air China 2 2026-05-05
CCA1229 Air China 2 2026-05-05
CCA102 Air China 2 2026-05-03
CCA8215 Air China 1 2026-05-19
CCA1724 Air China 1 2026-05-03
CCA1722 Air China 1 2026-04-28
CCA1425 Air China 1 2026-05-18
CCA1409 Air China 1 2026-05-17
CCA1389 Air China 1 2026-05-01

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-05-22 CCA8204 PEK → WUH May 22, 02:05 UTCMay 22, 02:30 UTC25m
2026-05-21 CCA8212 PEK → WUH May 21, 10:15 UTCMay 21, 10:25 UTC10m
2026-05-21 CCA1210 XIY → PEK May 21, 06:30 UTCMay 21, 07:00 UTC30m
2026-05-21 CCA1209 PEK → XIY May 21, 02:10 UTCMay 21, 02:25 UTC15m
2026-05-20 CCA1431 PEK → CKG May 20, 00:25 UTCMay 20, 00:45 UTC20m
2026-05-19 CCA8215 WUH → PEK May 19, 15:00 UTCMay 19, 15:20 UTC20m
2026-05-19 CCA8212 PEK → WUH May 19, 10:25 UTCMay 19, 10:45 UTC20m
2026-05-19 CCA8204 PEK → WUH May 19, 02:15 UTCMay 19, 02:35 UTC20m
2026-05-18 CCA1425 PEK → CTU May 18, 10:10 UTCMay 18, 10:30 UTC20m
2026-05-18 CCA1431 PEK → CKG May 18, 00:05 UTCMay 18, 00:30 UTC25m
2026-05-17 CCA1409 PEK → CKG May 17, 08:35 UTCMay 17, 09:00 UTC25m
2026-05-08 CCA4135 CKG → PEK May 8, 05:35 UTCMay 8, 05:44 UTC10m
2026-05-07 CCA1437 PEK → CKG May 7, 23:05 UTCMay 7, 23:24 UTC20m
2026-05-07 CCA1236 XIY → PEK May 7, 14:15 UTCMay 7, 14:35 UTC20m
2026-05-07 CCA1235 PEK → XIY May 7, 09:10 UTCMay 7, 09:35 UTC25m
2026-05-06 CCA1236 XIY → PEK May 6, 14:00 UTCMay 6, 14:20 UTC20m
2026-05-06 CCA1235 PEK → XIY May 6, 09:25 UTCMay 6, 09:50 UTC25m
2026-05-06 CCA8204 PEK → WUH May 6, 02:35 UTCMay 6, 02:55 UTC20m
2026-05-05 CCA1230 XIY → PEK May 5, 13:15 UTCMay 5, 13:30 UTC15m
2026-05-05 CCA1229 PEK → XIY May 5, 08:20 UTCMay 5, 08:50 UTC30m
2026-05-05 CCA4135 CKG → PEK May 5, 05:40 UTCMay 5, 05:50 UTC10m
2026-05-04 CCA1437 PEK → CKG May 4, 23:00 UTCMay 4, 23:15 UTC15m
2026-05-04 CCA1411 PEK → CKG May 4, 07:20 UTCMay 4, 07:35 UTC15m
2026-05-03 CCA1831 PEK → XMN May 3, 22:39 UTCMay 3, 22:49 UTC10m
2026-05-03 CCA1724 PEK → HGH May 3, 10:40 UTCMay 3, 10:50 UTC10m
2026-05-03 CCA102 HKG → PEK May 3, 05:45 UTCMay 3, 06:00 UTC15m
2026-05-03 CCA101 PEK → HKG May 3, 00:10 UTCMay 3, 03:30 UTC3h 19m
2026-05-02 CCA8212 PEK → WUH May 2, 09:50 UTCMay 2, 10:15 UTC25m
2026-05-02 CCA8204 PEK → WUH May 2, 02:15 UTCMay 2, 02:35 UTC20m
2026-05-01 CCA1230 XIY → PEK May 1, 12:55 UTCMay 1, 13:20 UTC25m
2026-05-01 CCA1229 PEK → XIY May 1, 08:20 UTCMay 1, 08:45 UTC25m
2026-05-01 CCA1389 PEK → CSX May 1, 00:40 UTCMay 1, 01:00 UTC20m
2026-04-28 CCA1722 CAN → HGH Apr 28, 08:50 UTCApr 28, 09:00 UTC10m
2026-04-27 CCA1359 PEK → CAN Apr 27, 23:35 UTCApr 27, 23:50 UTC15m
2026-04-26 CCA1359 PEK → CAN Apr 26, 23:15 UTCApr 26, 23:40 UTC25m
2026-04-25 CCA1226 XIY → PEK Apr 25, 05:05 UTCApr 25, 05:20 UTC15m
2026-04-25 CCA1225 PEK → XIY Apr 25, 00:20 UTCApr 25, 00:40 UTC20m
2026-04-24 CCA102 HKG → PEK Apr 24, 05:55 UTCApr 24, 06:10 UTC15m
2026-04-24 CCA101 PEK → HKG Apr 24, 03:05 UTCApr 24, 03:35 UTC30m
2026-04-24 CCA101 PEK → HKG Apr 24, 00:25 UTCApr 24, 00:40 UTC15m
2026-04-22 CCA1290 XIY → PEK Apr 22, 06:05 UTCApr 22, 06:20 UTC15m
2026-04-22 CCA1289 PEK → XIY Apr 22, 01:15 UTCApr 22, 01:40 UTC25m
2026-04-21 CCA1364 CSX → PEK Apr 21, 13:01 UTCApr 21, 13:10 UTC10m
2026-04-20 CCA1363 PEK → CSX Apr 20, 07:35 UTCApr 20, 07:55 UTC20m
2026-04-19 CCA1831 PEK → XMN Apr 19, 22:45 UTCApr 19, 22:55 UTC10m
2026-04-19 CCA1411 PEK → CKG Apr 19, 09:15 UTCApr 19, 09:35 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-919X page for operator, model, and routing details .

Mode-S 78217F frequently asked

What is Mode-S code 78217F?
78217F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-919X.
Where is Mode-S 78217F registered?
Mode-S code 78217F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78217F broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78217F, octal 36020577, decimal 7,872,895.
What flights does 78217F operate?
Mode-S 78217F has broadcast 20 distinct callsigns, including CCA8204, CCA8212, CCA101, CCA4135, CCA1831.