Apparatus

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sensors Mode-S transponder

AA5F7C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N768CK · operated by KALITTA AIR LLC

Hex
AA5F7C
Octal
52457574
Decimal
11,165,564
Country
US
Tail
N768CK
Type
B744
Broadcasting now · callsign CKS523 · 31,000 ft
Flights observed
176
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Current position

AA5F7C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA5F7C 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
CKS931 Kalitta Air 12 2026-05-27
CKS525 - 12 2026-07-11
CKS520 - 12 2026-07-11
CKS932 Kalitta Air 10 2026-05-26
CKS917 - 10 2026-06-20
CKS785 - 10 2026-06-18
CKS522 - 9 2026-07-13
CKS893 Kalitta Air 6 2026-06-01
CKS891 Kalitta Air 6 2026-05-02
CKS811 - 6 2026-06-22
CKS523 - 6 2026-07-07
CKS521 - 6 2026-07-13
CKS812 Kalitta Air 4 2026-06-21
CKS786 Kalitta Air 4 2026-06-16
CKS557 Kalitta Air 4 2026-06-03
CKS529 Kalitta Air 4 2026-05-25
CKS402 Kalitta Air 4 2026-05-21
CMB163 - 3 2026-04-17
CKS9782 Kalitta Air 3 2026-05-29
CKS899 Kalitta Air 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CKS522 - Jul 13, 20:10 UTCJul 14, 09:25 UTC13h 15m
2026-07-13 CKS521 ANC → ORD Jul 13, 00:01 UTCJul 13, 05:10 UTC5h 10m
2026-07-12 CKS521 ICN → ANC Jul 12, 14:05 UTCJul 12, 21:40 UTC7h 35m
2026-07-11 CKS520 SFO → ICN Jul 11, 22:55 UTCJul 12, 10:35 UTC11h 40m
2026-07-11 CKS520 - Jul 11, 18:05 UTCJul 11, 18:50 UTC45m
2026-07-11 CKS525 - Jul 11, 03:55 UTCJul 11, 08:30 UTC4h 35m
2026-07-10 CKS525 ICN → ANC Jul 10, 14:25 UTCJul 10, 22:05 UTC7h 41m
2026-07-09 CKS520 SFO → ICN Jul 9, 23:15 UTCJul 10, 11:05 UTC11h 50m
2026-07-09 CKS520 - Jul 9, 18:10 UTCJul 9, 19:15 UTC1h 5m
2026-07-09 CKS525 - Jul 9, 09:25 UTCJul 9, 13:55 UTC4h 30m
2026-07-08 CKS525 ICN → ANC Jul 8, 23:30 UTCJul 9, 07:20 UTC7h 50m
2026-07-08 CKS526 - Jul 8, 08:25 UTCJul 8, 20:40 UTC12h 15m
2026-07-07 CKS523 - Jul 7, 23:45 UTCJul 8, 04:05 UTC4h 20m
2026-07-07 CKS523 ICN → ANC Jul 7, 13:15 UTCJul 7, 20:45 UTC7h 30m
2026-07-06 CKS522 - Jul 6, 19:40 UTCJul 7, 08:50 UTC13h 10m
2026-07-06 CKS521 - Jul 6, 05:00 UTCJul 6, 10:20 UTC5h 20m
2026-07-05 CKS521 ICN → ANC Jul 5, 20:00 UTCJul 6, 03:25 UTC7h 25m
2026-07-04 CKS520 SFO → ICN Jul 4, 22:40 UTCJul 5, 10:15 UTC11h 35m
2026-07-04 CKS520 - Jul 4, 19:10 UTCJul 4, 20:05 UTC55m
2026-07-04 CKS525 - Jul 4, 05:55 UTCJul 4, 10:35 UTC4h 40m
2026-07-03 CKS525 ICN → ANC Jul 3, 18:00 UTCJul 4, 01:25 UTC7h 25m
2026-07-02 CKS520 SFO → ICN Jul 2, 22:45 UTCJul 3, 10:50 UTC12h 5m
2026-07-02 CKS520 - Jul 2, 18:15 UTCJul 2, 19:05 UTC50m
2026-07-02 CKS525 ICN → ANC Jul 2, 06:30 UTCJul 2, 10:40 UTC4h 10m
2026-07-01 CKS525 ICN → ANC Jul 1, 21:00 UTCJul 2, 04:20 UTC7h 20m
2026-07-01 CKS526 - Jul 1, 06:20 UTCJul 1, 18:25 UTC12h 5m
2026-06-30 CKS523 - Jun 30, 21:00 UTCJul 1, 01:20 UTC4h 20m
2026-06-30 CKS523 - Jun 30, 11:15 UTCJun 30, 18:35 UTC7h 20m
2026-06-29 CKS522 SEA → ICN Jun 29, 20:40 UTCJun 30, 07:30 UTC10h 51m
2026-06-29 CKS522 - Jun 29, 13:00 UTCJun 29, 16:19 UTC3h 20m
2026-06-28 CKS521 ANC → ORD Jun 28, 23:29 UTCJun 29, 05:00 UTC5h 30m
2026-06-28 CKS521 - Jun 28, 11:55 UTCJun 28, 18:59 UTC7h 5m
2026-06-27 CKS520 SFO → ICN Jun 27, 20:55 UTCJun 28, 08:59 UTC12h 5m
2026-06-27 CKS520 - Jun 27, 16:24 UTCJun 27, 17:29 UTC1h 5m
2026-06-27 CKS525 ICN → ANC Jun 27, 01:15 UTCJun 27, 05:29 UTC4h 15m
2026-06-26 CKS525 ICN → ANC Jun 26, 15:34 UTCJun 26, 22:49 UTC7h 15m
2026-06-26 CKS520 SFO → ICN Jun 26, 00:35 UTCJun 26, 12:19 UTC11h 45m
2026-06-25 CKS520 - Jun 25, 19:05 UTCJun 25, 19:59 UTC55m
2026-06-25 CKS525 ICN → ANC Jun 25, 08:45 UTCJun 25, 13:09 UTC4h 25m
2026-06-24 CKS525 ICN → ANC Jun 24, 23:10 UTCJun 25, 06:35 UTC7h 25m
2026-06-24 CKS526 ORD → NGO Jun 24, 07:50 UTCJun 24, 20:09 UTC12h 20m
2026-06-23 CKS523 SFO → FCO Jun 23, 21:14 UTCJun 24, 02:15 UTC5h 0m
2026-06-23 CKS523 SFO → FCO Jun 23, 11:14 UTCJun 23, 18:55 UTC7h 40m
2026-06-22 CKS522 SEA → ICN Jun 22, 21:14 UTCJun 23, 07:35 UTC10h 20m
2026-06-22 CKS522 - Jun 22, 13:44 UTCJun 22, 17:50 UTC4h 5m
2026-06-22 CKS811 ANC → ORD Jun 22, 04:15 UTCJun 22, 09:24 UTC5h 10m
2026-06-21 CKS811 ICN → ANC Jun 21, 18:50 UTCJun 22, 02:30 UTC7h 40m
2026-06-21 CKS811 - Jun 21, 15:44 UTCJun 21, 16:10 UTC25m
2026-06-21 CKS812 ANC → ICN Jun 21, 01:35 UTCJun 21, 09:40 UTC8h 5m
2026-06-20 CKS812 ANC → ICN Jun 20, 14:09 UTCJun 20, 19:49 UTC5h 40m

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 N768CK page for operator, model, and routing details .

Mode-S AA5F7C frequently asked

What is Mode-S code AA5F7C?
AA5F7C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N768CK.
Where is Mode-S AA5F7C registered?
Mode-S code AA5F7C 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 AA5F7C broadcasting right now?
Yes. Mode-S AA5F7C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA5F7C, octal 52457574, decimal 11,165,564.
What flights does AA5F7C operate?
Mode-S AA5F7C has broadcast 20 distinct callsigns, including CKS931, CKS525, CKS520, CKS932, CKS917.