Apparatus

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sensors Mode-S transponder

AA0559

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N745CK · BOEING 747-400 · operated by KALITTA AIR LLC

Hex
AA0559
Octal
52402531
Decimal
11,142,489
Country
US
Tail
N745CK
Type
B744
No current signal · last broadcast Jul 26, 22:10 UTC
Flights observed
197
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:10 UTC

Last known position

Most recent position reported by Mode-S AA0559.

Country allocation

The ICAO 24-bit address AA0559 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
CKS368 Kalitta Air 16 2026-05-21
CKS785 - 15 2026-07-03
CKS931 - 11 2026-06-22
CKS369 Kalitta Air 9 2026-05-22
CKS935 - 8 2026-06-20
CKS932 - 8 2026-06-21
CKS786 - 8 2026-07-02
CKS601 Kalitta Air 7 2026-07-22
CKS961 - 6 2026-07-13
CKS960 - 6 2026-07-12
CKS936 Kalitta Air 6 2026-06-18
CKS891 Kalitta Air 6 2026-05-09
CKS556 Kalitta Air 5 2026-04-17
CKS982 - 4 2026-07-09
CKS981 - 4 2026-07-10
CKS9745 - 4 2026-07-20
CKS602 Kalitta Air 4 2026-07-21
CKS557 Kalitta Air 4 2026-04-18
CKS529 Kalitta Air 4 2026-05-30
CKS528 Kalitta Air 4 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CKS528 ORD → NRT Jul 26, 15:10 UTCJul 26, 22:10 UTC7h 0m
2026-07-24 CKS579 ICN → ANC Jul 24, 18:50 UTCJul 25, 00:00 UTC5h 10m
2026-07-24 CKS579 ICN → ANC Jul 24, 09:45 UTCJul 24, 16:55 UTC7h 10m
2026-07-23 CKS578 ORD → ANC Jul 23, 18:05 UTCJul 24, 07:45 UTC13h 40m
2026-07-22 CKS601 ANC → ORD Jul 22, 14:00 UTCJul 22, 18:45 UTC4h 45m
2026-07-22 CKS601 ANC → ORD Jul 22, 04:40 UTCJul 22, 11:45 UTC7h 5m
2026-07-21 CKS601 ANC → ORD Jul 21, 23:35 UTCJul 22, 02:25 UTC2h 50m
2026-07-21 CKS601 ANC → ORD Jul 21, 22:45 UTCJul 21, 22:55 UTC10m
2026-07-21 CKS602 ORD → ICN Jul 21, 19:45 UTCJul 21, 19:55 UTC10m
2026-07-21 CKS602 ORD → ICN Jul 21, 16:25 UTCJul 21, 17:00 UTC35m
2026-07-20 CKS602 ORD → ICN Jul 20, 20:55 UTCJul 21, 10:25 UTC13h 30m
2026-07-20 CKS9745 - Jul 20, 16:50 UTCJul 20, 17:40 UTC50m
2026-07-14 CKS9745 - Jul 14, 04:50 UTCJul 14, 05:30 UTC40m
2026-07-13 CKS961 - Jul 13, 20:25 UTCJul 14, 01:40 UTC5h 15m
2026-07-13 CKS961 ICN → ANC Jul 13, 11:20 UTCJul 13, 18:45 UTC7h 25m
2026-07-12 CKS960 ANC → ICN Jul 12, 20:10 UTCJul 13, 09:20 UTC13h 10m
2026-07-12 CKS960 LAX → ANC Jul 12, 06:20 UTCJul 12, 10:40 UTC4h 20m
2026-07-10 CKS981 - Jul 10, 18:30 UTCJul 10, 23:05 UTC4h 35m
2026-07-10 CKS981 ICN → ANC Jul 10, 09:10 UTCJul 10, 17:10 UTC8h 0m
2026-07-09 CKS982 ANC → ICN Jul 9, 14:00 UTCJul 10, 03:45 UTC13h 45m
2026-07-09 CKS982 ORD → ANC Jul 9, 06:15 UTCJul 9, 12:05 UTC5h 50m
2026-07-08 CKS523 - Jul 8, 21:45 UTCJul 9, 03:25 UTC5h 40m
2026-07-08 CKS523 ICN → ANC Jul 8, 12:25 UTCJul 8, 20:05 UTC7h 40m
2026-07-08 CKS523A ANC → ORD Jul 8, 09:05 UTCJul 8, 09:55 UTC50m
2026-07-08 CKS524A - Jul 8, 02:40 UTCJul 8, 02:50 UTC10m
2026-07-07 CKS524A - Jul 7, 23:00 UTCJul 7, 23:40 UTC40m
2026-07-07 CKS524A - Jul 7, 07:35 UTCJul 7, 20:35 UTC13h 0m
2026-07-06 CKS961 - Jul 6, 01:20 UTCJul 6, 06:25 UTC5h 5m
2026-07-05 CKS961 ICN → ANC Jul 5, 14:10 UTCJul 5, 21:20 UTC7h 10m
2026-07-04 CKS960 ANC → ICN Jul 4, 21:40 UTCJul 5, 11:25 UTC13h 45m
2026-07-04 CKS960 ORD → ANC Jul 4, 11:55 UTCJul 4, 17:15 UTC5h 20m
2026-07-03 CKS785 ANC → ORD Jul 3, 12:35 UTCJul 3, 18:15 UTC5h 40m
2026-07-03 CKS785 ICN → ANC Jul 3, 02:15 UTCJul 3, 09:25 UTC7h 10m
2026-07-02 CKS785 - Jul 2, 23:30 UTCJul 2, 23:50 UTC20m
2026-07-02 CKS786 - Jul 2, 06:51 UTCJul 2, 22:40 UTC15h 49m
2026-07-01 CKS786 - Jul 1, 22:00 UTCJul 2, 03:30 UTC5h 30m
2026-07-01 CKS811 ANC → ORD Jul 1, 11:50 UTCJul 1, 17:30 UTC5h 40m
2026-07-01 CKS811 ICN → ANC Jul 1, 02:15 UTCJul 1, 09:40 UTC7h 25m
2026-06-30 CKS811 - Jun 30, 23:20 UTCJun 30, 23:50 UTC30m
2026-06-30 CKS812 - Jun 30, 07:40 UTCJun 30, 15:50 UTC8h 10m
2026-06-29 CKS812 - Jun 29, 22:59 UTCJun 30, 04:20 UTC5h 21m
2026-06-29 CKS893 ANC → ORD Jun 29, 12:00 UTCJun 29, 17:40 UTC5h 40m
2026-06-29 CKS893 ICN → ANC Jun 29, 02:05 UTCJun 29, 09:25 UTC7h 20m
2026-06-28 CKS893 - Jun 28, 23:14 UTCJun 28, 23:44 UTC30m
2026-06-28 CKS9894 - Jun 28, 06:00 UTCJun 28, 09:05 UTC3h 5m
2026-06-27 CMB424 - Jun 27, 18:29 UTCJun 28, 02:54 UTC8h 25m
2026-06-27 CKS9713 - Jun 27, 10:50 UTCJun 27, 12:15 UTC1h 25m
2026-06-26 CKS785 ANC → ORD Jun 26, 12:19 UTCJun 26, 17:50 UTC5h 30m
2026-06-26 CKS785 ICN → ANC Jun 26, 02:30 UTCJun 26, 09:55 UTC7h 25m
2026-06-25 CKS785 - Jun 25, 23:14 UTCJun 25, 23:39 UTC25m

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 N745CK page for operator, model, and routing details .

Mode-S AA0559 frequently asked

What is Mode-S code AA0559?
AA0559 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N745CK.
Where is Mode-S AA0559 registered?
Mode-S code AA0559 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AA0559 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA0559, octal 52402531, decimal 11,142,489.
What flights does AA0559 operate?
Mode-S AA0559 has broadcast 20 distinct callsigns, including CKS368, CKS785, CKS931, CKS369, CKS935.