Apparatus

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sensors Mode-S transponder

7806EF

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-6741 · AIRBUS A-321

Hex
7806EF
Octal
36003357
Decimal
7,866,095
Country
CN
Tail
B-6741
Type
A321
No current signal · last broadcast 13h ago
Flights observed
84
Distinct callsigns
20
Country
CN
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 7806EF.

Country allocation

The ICAO 24-bit address 7806EF 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
CCA149 Air China 10 2026-05-12
CCA727 Air China 4 2026-06-01
CCA150 Air China 4 2026-05-12
CCA145 Air China 4 2026-05-22
CCA126 Air China 4 2026-05-01
CCA125 Air China 4 2026-05-01
CCA728 Air China 3 2026-06-01
CCA1639 Air China 3 2026-05-03
CCA146 Air China 3 2026-05-18
CCA1286 - 3 2026-05-04
CCA1285 - 3 2026-05-04
CCA928 Air China 2 2026-05-25
CCA927 Air China 2 2026-05-25
CCA740 - 2 2026-04-29
CCA421 Air China 2 2026-05-23
CCA189 Air China 2 2026-04-19
CCA1248 Air China 2 2026-05-05
CCA1247 Air China 2 2026-05-04
CCA115 Air China 2 2026-05-24
CCA8352 Air China 1 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CCA8352 ZUH → HGH Jun 2, 05:55 UTCJun 2, 06:10 UTC15m
2026-06-01 CCA728 HKG → HGH Jun 1, 11:05 UTCJun 1, 11:25 UTC20m
2026-06-01 CCA727 HGH → HKG Jun 1, 08:30 UTCJun 1, 08:50 UTC20m
2026-05-29 CCA1217 - May 29, 13:05 UTCMay 29, 13:25 UTC20m
2026-05-29 CCA1484 - May 29, 11:05 UTCMay 29, 11:15 UTC10m
2026-05-29 CCA1483 - May 29, 05:05 UTCMay 29, 05:25 UTC20m
2026-05-28 CCA184 HND → PEK May 28, 23:50 UTCMay 29, 02:05 UTC2h 15m
2026-05-28 CCA183 PEK → HND May 28, 10:10 UTCMay 28, 12:05 UTC1h 55m
2026-05-28 CCA124 ICN → PEK May 28, 04:35 UTCMay 28, 04:55 UTC20m
2026-05-28 CCA123 PEK → ICN May 28, 02:00 UTCMay 28, 02:25 UTC25m
2026-05-27 CCA1139 PEK → YCU May 27, 09:55 UTCMay 27, 10:15 UTC20m
2026-05-26 CCA1871 PEK → XMN May 26, 06:39 UTCMay 26, 06:54 UTC15m
2026-05-25 CCA1807 PEK → FOC May 25, 10:40 UTCMay 25, 10:55 UTC15m
2026-05-25 CCA928 KIX → PEK May 25, 05:15 UTCMay 25, 06:40 UTC1h 25m
2026-05-25 CCA927 PEK → KIX May 25, 02:10 UTCMay 25, 03:40 UTC1h 30m
2026-05-24 CCA116 HKG → PEK May 24, 13:55 UTCMay 24, 14:10 UTC15m
2026-05-24 CCA115 PEK → HKG May 24, 10:20 UTCMay 24, 11:05 UTC45m
2026-05-23 CCA115 PEK → HKG May 23, 13:50 UTCMay 24, 11:05 UTC21h 15m
2026-05-23 CCA422 HND → PEK May 23, 12:10 UTCMay 24, 11:05 UTC22h 55m
2026-05-23 CCA421 PEK → HND May 23, 08:35 UTCMay 23, 10:25 UTC1h 50m
2026-05-22 CCA421 PEK → HND May 22, 12:15 UTCMay 23, 10:25 UTC22h 10m
2026-05-22 CCA145 HGH → NRT May 22, 08:35 UTCMay 22, 09:55 UTC1h 20m
2026-05-20 CCA728 HKG → HGH May 20, 11:00 UTCMay 20, 11:45 UTC45m
2026-05-20 CCA727 HGH → HKG May 20, 08:30 UTCMay 20, 08:45 UTC15m
2026-05-20 CCA1710 PEK → HGH May 20, 02:40 UTCMay 20, 02:55 UTC15m
2026-05-19 CCA728 HKG → HGH May 19, 10:55 UTCMay 19, 11:10 UTC15m
2026-05-19 CCA727 HGH → HKG May 19, 08:20 UTCMay 19, 08:40 UTC20m
2026-05-18 CCA146 NRT → HGH May 18, 12:05 UTCMay 18, 13:25 UTC1h 20m
2026-05-18 CCA145 HGH → NRT May 18, 02:40 UTCMay 18, 10:25 UTC7h 45m
2026-05-14 CCA928 KIX → PEK May 14, 05:45 UTCMay 14, 07:05 UTC1h 20m
2026-05-14 CCA927 PEK → KIX May 14, 02:05 UTCMay 14, 03:35 UTC1h 30m
2026-05-12 CCA150 TPE → HGH May 12, 04:40 UTCMay 12, 05:10 UTC30m
2026-05-12 CCA149 HGH → TPE May 12, 02:45 UTCMay 12, 03:05 UTC20m
2026-05-11 CCA150 TPE → HGH May 11, 04:50 UTCMay 11, 05:25 UTC35m
2026-05-11 CCA149 HGH → TPE May 11, 02:30 UTCMay 11, 03:10 UTC40m
2026-05-10 CCA149 HGH → TPE May 10, 04:50 UTCMay 11, 03:10 UTC22h 20m
2026-05-10 CCA149 HGH → TPE May 10, 02:34 UTCMay 10, 03:14 UTC40m
2026-05-09 CCA149 HGH → TPE May 9, 04:50 UTCMay 10, 03:14 UTC22h 25m
2026-05-08 CCA146 NRT → HGH May 8, 12:39 UTCMay 9, 03:05 UTC14h 25m
2026-05-08 CCA145 HGH → NRT May 8, 04:44 UTCMay 8, 11:05 UTC6h 20m
2026-05-08 CCA149 HGH → TPE May 8, 02:24 UTCMay 8, 03:14 UTC50m
2026-05-07 CCA149 HGH → TPE May 7, 04:45 UTCMay 8, 03:14 UTC22h 30m
2026-05-06 CCA149 HGH → TPE May 6, 12:45 UTCMay 7, 03:00 UTC14h 14m
2026-05-06 CCA1373 PEK → CSX May 6, 05:10 UTCMay 6, 05:30 UTC20m
2026-05-05 CCA1915 PEK → CGO May 5, 14:20 UTCMay 5, 14:30 UTC10m
2026-05-05 CCA1248 XIY → PEK May 5, 03:05 UTCMay 5, 03:20 UTC15m
2026-05-04 CCA1247 PEK → XIY May 4, 12:45 UTCMay 4, 13:15 UTC30m
2026-05-04 CCA1286 - May 4, 10:15 UTCMay 4, 10:35 UTC20m
2026-05-04 CCA1285 - May 4, 03:54 UTCMay 4, 04:15 UTC20m
2026-05-03 CCA1639 PEK → HRB May 3, 13:05 UTCMay 3, 13:15 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-6741 page for operator, model, and routing details .

Mode-S 7806EF frequently asked

What is Mode-S code 7806EF?
7806EF is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-6741.
Where is Mode-S 7806EF registered?
Mode-S code 7806EF is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7806EF broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7806EF, octal 36003357, decimal 7,866,095.
What flights does 7806EF operate?
Mode-S 7806EF has broadcast 20 distinct callsigns, including CCA149, CCA727, CCA150, CCA145, CCA126.