Apparatus

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sensors Mode-S transponder

7805DD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-2077 · BOEING 777-200LR

Hex
7805DD
Octal
36002735
Decimal
7,865,821
Country
CN
Tail
B-2077
Type
B77L
No current signal · last broadcast 5h ago
Flights observed
103
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 7805DD.

Country allocation

The ICAO 24-bit address 7805DD 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
CKK231 China Cargo Airlines 11 2026-05-25
CKK224 China Cargo Airlines 7 2026-05-27
CKK206 China Cargo Airlines 7 2026-05-19
CKK602 - 6 2026-05-03
CKK236 China Cargo Airlines 6 2026-04-17
CKK232 China Cargo Airlines 6 2026-05-25
CKK223 China Cargo Airlines 6 2026-05-26
CKK221 China Cargo Airlines 6 2026-05-13
CKK225 China Cargo Airlines 5 2026-04-27
CKK215 China Cargo Airlines 5 2026-05-22
CKK205 China Cargo Airlines 5 2026-05-18
CKK227 China Cargo Airlines 4 2026-05-07
CKK222 China Cargo Airlines 4 2026-05-15
CKK624 China Cargo Airlines 3 2026-05-28
CKK623 China Cargo Airlines 3 2026-05-27
CKK228 China Cargo Airlines 3 2026-05-07
CKK601 - 2 2026-05-02
CKK288 - 2 2026-05-10
CKK235 - 2 2026-04-17
CKK216 China Cargo Airlines 2 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CKK213 PVG → SZX May 29, 20:55 UTCMay 29, 21:05 UTC10m
2026-05-28 CKK624 LAX → PVG May 28, 16:25 UTCMay 29, 04:55 UTC12h 30m
2026-05-27 CKK623 PVG → LAX May 27, 20:30 UTCMay 28, 13:55 UTC17h 25m
2026-05-27 CKK224 LAX → PVG May 27, 10:00 UTCMay 28, 04:55 UTC18h 55m
2026-05-26 CKK223 PVG → LAX May 26, 12:14 UTCMay 27, 07:15 UTC19h 1m
2026-05-26 CKK223 PVG → LAX May 26, 02:04 UTCMay 26, 21:59 UTC19h 55m
2026-05-25 CKK223 PVG → LAX May 25, 23:19 UTCMay 26, 21:59 UTC22h 40m
2026-05-25 CKK232 JFK → PVG May 25, 22:44 UTCMay 26, 21:14 UTC22h 30m
2026-05-25 CKK231 PVG → SEA May 25, 13:45 UTCMay 25, 19:59 UTC6h 15m
2026-05-25 CKK231 PVG → SEA May 25, 05:00 UTCMay 25, 12:25 UTC7h 25m
2026-05-24 CKK231 PVG → SEA May 24, 15:55 UTCMay 25, 12:25 UTC20h 30m
2026-05-24 CKK232 JFK → PVG May 24, 06:15 UTCMay 25, 05:10 UTC22h 55m
2026-05-24 CKK232 JFK → PVG May 24, 03:00 UTCMay 24, 16:35 UTC13h 35m
2026-05-23 CKK231 PVG → SEA May 23, 16:05 UTCMay 23, 22:50 UTC6h 45m
2026-05-22 CKK231 PVG → SEA May 22, 21:40 UTCMay 23, 14:30 UTC16h 49m
2026-05-22 CKK231 PVG → SEA May 22, 17:20 UTCMay 23, 14:30 UTC21h 9m
2026-05-22 CKK231 PVG → SEA May 22, 16:25 UTCMay 23, 14:30 UTC22h 5m
2026-05-22 CKK215 PVG → CDG May 22, 03:40 UTCMay 22, 13:35 UTC9h 55m
2026-05-21 CKK215 PVG → CDG May 21, 17:20 UTCMay 22, 13:35 UTC20h 15m
2026-05-21 CKK232 JFK → PVG May 21, 07:50 UTCMay 22, 07:15 UTC23h 25m
2026-05-21 CKK232 JFK → PVG May 21, 05:20 UTCMay 22, 03:55 UTC22h 35m
2026-05-21 CKK232 JFK → PVG May 21, 04:30 UTCMay 21, 18:05 UTC13h 35m
2026-05-20 CKK231 PVG → SEA May 20, 19:05 UTCMay 21, 01:45 UTC6h 40m
2026-05-20 CKK231 PVG → SEA May 20, 10:10 UTCMay 20, 17:20 UTC7h 10m
2026-05-19 CKK231 PVG → SEA May 19, 21:50 UTCMay 20, 17:20 UTC19h 31m
2026-05-19 CKK231 PVG → SEA May 19, 19:20 UTCMay 20, 17:20 UTC22h 1m
2026-05-19 CKK206 AMS → PVG May 19, 17:20 UTCMay 20, 17:15 UTC23h 56m
2026-05-19 CKK206 AMS → PVG May 19, 16:40 UTCMay 20, 11:35 UTC18h 56m
2026-05-18 CKK205 PVG → AMS May 18, 20:05 UTCMay 19, 14:20 UTC18h 15m
2026-05-18 CKK224 LAX → PVG May 18, 09:20 UTCMay 19, 08:20 UTC22h 59m
2026-05-17 CKK223 PVG → LAX May 17, 20:35 UTCMay 18, 07:15 UTC10h 40m
2026-05-16 CKK206 AMS → PVG May 16, 21:55 UTCMay 17, 21:15 UTC23h 20m
2026-05-16 CKK206 AMS → PVG May 16, 16:35 UTCMay 16, 22:40 UTC6h 5m
2026-05-15 CKK205 PVG → AMS May 15, 19:55 UTCMay 16, 13:46 UTC17h 51m
2026-05-15 CKK222 LAX → PVG May 15, 00:00 UTCMay 15, 17:35 UTC17h 34m
2026-05-14 CKK222 LAX → PVG May 14, 21:20 UTCMay 15, 17:35 UTC20h 14m
2026-05-14 CKK222 LAX → PVG May 14, 20:50 UTCMay 15, 17:35 UTC20h 44m
2026-05-13 CKK221 PVG → LAX May 13, 23:20 UTCMay 14, 18:25 UTC19h 5m
2026-05-13 CKK221 PVG → LAX May 13, 22:45 UTCMay 14, 18:25 UTC19h 40m
2026-05-13 CKK221 PVG → LAX May 13, 19:20 UTCMay 14, 18:25 UTC23h 5m
2026-05-13 CKK216 CDG → PVG May 13, 17:30 UTCMay 14, 09:40 UTC16h 10m
2026-05-12 CKK215 PVG → CDG May 12, 20:25 UTCMay 13, 13:45 UTC17h 20m
2026-05-12 CKK215 PVG → CDG May 12, 13:20 UTCMay 13, 13:15 UTC23h 55m
2026-05-12 CKK224 LAX → PVG May 12, 12:20 UTCMay 13, 11:15 UTC22h 55m
2026-05-12 CKK224 LAX → PVG May 12, 09:35 UTCMay 13, 07:45 UTC22h 10m
2026-05-11 CKK223 PVG → LAX May 11, 20:35 UTCMay 12, 06:40 UTC10h 5m
2026-05-10 CKK288 - May 10, 08:35 UTCMay 10, 09:00 UTC25m
2026-05-10 CKK288 - May 10, 07:19 UTCMay 10, 07:34 UTC15m
2026-05-09 CKK262 TPE → PVG May 9, 18:15 UTCMay 10, 04:19 UTC10h 5m
2026-05-09 CKK261 PVG → TPE May 9, 15:50 UTCMay 9, 16:25 UTC35m

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-2077 page for operator, model, and routing details .

Mode-S 7805DD frequently asked

What is Mode-S code 7805DD?
7805DD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-2077.
Where is Mode-S 7805DD registered?
Mode-S code 7805DD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7805DD broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7805DD, octal 36002735, decimal 7,865,821.
What flights does 7805DD operate?
Mode-S 7805DD has broadcast 20 distinct callsigns, including CKK231, CKK224, CKK206, CKK602, CKK236.