Apparatus

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sensors Mode-S transponder

AA01A2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N744CK · BOEING 747-400 · operated by KALITTA AIR LLC

Hex
AA01A2
Octal
52400642
Decimal
11,141,538
Country
US
Tail
N744CK
Type
B744
No current signal · last broadcast Jul 26, 16:35 UTC
Flights observed
213
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 16:35 UTC

Last known position

Most recent position reported by Mode-S AA01A2.

Country allocation

The ICAO 24-bit address AA01A2 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 25 2026-04-29
CKS369 Kalitta Air 21 2026-04-30
CKS893 Kalitta Air 13 2026-07-25
CKS527 Kalitta Air 11 2026-04-27
CKS819 - 9 2026-06-26
CKS810 - 8 2026-06-25
CKS402 - 8 2026-07-16
CKS401 Kalitta Air 8 2026-07-20
CKS370 Kalitta Air 8 2026-04-26
CKS997 - 6 2026-07-07
CKS894 Kalitta Air 6 2026-07-26
CKS403 - 6 2026-07-16
CKS9744 - 5 2026-07-12
CKS961 - 5 2026-06-28
CKS917 Kalitta Air 5 2026-05-22
CKS785 Kalitta Air 5 2026-06-14
CKS998 - 4 2026-07-03
CKS960 - 4 2026-06-27
CKS936 - 4 2026-06-29
CKS935 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CKS894 MIA → ANC Jul 26, 08:00 UTCJul 26, 16:35 UTC8h 35m
2026-07-25 CKS894 MIA → ANC Jul 25, 23:30 UTCJul 26, 05:15 UTC5h 45m
2026-07-25 CKS893 ANC → ORD Jul 25, 12:05 UTCJul 25, 17:10 UTC5h 5m
2026-07-25 CKS893 ANC → ORD Jul 25, 02:25 UTCJul 25, 09:30 UTC7h 5m
2026-07-24 CKS893 ANC → ORD Jul 24, 22:40 UTCJul 24, 23:00 UTC20m
2026-07-24 CKS893 ANC → ORD Jul 24, 21:40 UTCJul 24, 22:00 UTC20m
2026-07-24 CKS894 MIA → ANC Jul 24, 07:25 UTCJul 24, 16:15 UTC8h 50m
2026-07-23 CKS894 MIA → ANC Jul 23, 23:10 UTCJul 24, 05:05 UTC5h 55m
2026-07-23 CKS893 ANC → ORD Jul 23, 13:00 UTCJul 23, 18:00 UTC5h 0m
2026-07-23 CKS893 ANC → ORD Jul 23, 04:05 UTCJul 23, 11:20 UTC7h 15m
2026-07-22 CKS893 ANC → ORD Jul 22, 23:10 UTCJul 22, 23:40 UTC30m
2026-07-22 CKS894 MIA → ANC Jul 22, 10:25 UTCJul 22, 16:25 UTC6h 0m
2026-07-22 CKS894 MIA → ANC Jul 22, 00:00 UTCJul 22, 04:30 UTC4h 30m
2026-07-20 CKS9401 SUU → LAX Jul 20, 16:40 UTCJul 20, 17:35 UTC55m
2026-07-20 CKS401 UAM → HNL Jul 20, 08:20 UTCJul 20, 12:40 UTC4h 20m
2026-07-20 CKS401 UAM → HNL Jul 20, 03:15 UTCJul 20, 03:35 UTC20m
2026-07-19 CKS401 UAM → HNL Jul 19, 14:10 UTCJul 19, 14:45 UTC35m
2026-07-19 CKS401 UAM → HNL Jul 19, 04:25 UTCJul 19, 06:10 UTC1h 45m
2026-07-18 CKS400 SUU → EDF Jul 18, 17:35 UTCJul 19, 01:10 UTC7h 35m
2026-07-17 CKS400 SUU → EDF Jul 17, 07:44 UTCJul 17, 11:30 UTC3h 45m
2026-07-16 CKS403 EDF → SUU Jul 16, 22:59 UTCJul 17, 02:54 UTC3h 55m
2026-07-16 CKS403 OKO → EDF Jul 16, 12:25 UTCJul 16, 18:55 UTC6h 30m
2026-07-16 CKS403 OSN → OKO Jul 16, 06:35 UTCJul 16, 08:10 UTC1h 35m
2026-07-16 CKS402 OKO → OSN Jul 16, 01:30 UTCJul 16, 03:05 UTC1h 35m
2026-07-15 CKS402 - Jul 15, 20:20 UTCJul 15, 21:15 UTC55m
2026-07-15 CKS402 - Jul 15, 13:35 UTCJul 15, 13:45 UTC10m
2026-07-15 CKS402 - Jul 15, 05:55 UTCJul 15, 10:45 UTC4h 50m
2026-07-14 CKS9402 - Jul 14, 22:45 UTCJul 15, 02:15 UTC3h 30m
2026-07-14 CKS913 - Jul 14, 12:55 UTCJul 14, 18:15 UTC5h 20m
2026-07-13 CKS913 - Jul 13, 16:50 UTCJul 14, 10:35 UTC17h 45m
2026-07-13 CKS913 - Jul 13, 12:35 UTCJul 14, 10:35 UTC22h 0m
2026-07-13 CKS8912 - Jul 13, 11:20 UTCJul 14, 10:30 UTC23h 10m
2026-07-13 CKS916 - Jul 13, 03:10 UTCJul 13, 07:35 UTC4h 25m
2026-07-12 CKS9744 - Jul 12, 17:05 UTCJul 12, 18:05 UTC1h 0m
2026-07-12 CKS401 - Jul 12, 08:45 UTCJul 12, 13:20 UTC4h 35m
2026-07-12 CKS401 - Jul 12, 05:20 UTCJul 12, 05:40 UTC20m
2026-07-11 CKS401 - Jul 11, 13:15 UTCJul 11, 13:50 UTC35m
2026-07-11 CKS401 OSN → OKO Jul 11, 06:25 UTCJul 11, 08:05 UTC1h 40m
2026-07-10 CKS400 EDF → OSN Jul 10, 20:20 UTCJul 11, 03:55 UTC7h 36m
2026-07-10 CKS400 - Jul 10, 08:10 UTCJul 10, 11:55 UTC3h 45m
2026-07-10 CKS403 ANC → SUU Jul 10, 00:30 UTCJul 10, 04:20 UTC3h 50m
2026-07-09 CKS403 OKO → ANC Jul 9, 12:05 UTCJul 9, 18:30 UTC6h 25m
2026-07-09 CKS403 OSN → OKO Jul 9, 07:00 UTCJul 9, 08:40 UTC1h 40m
2026-07-09 CKS402 OKO → OSN Jul 9, 01:20 UTCJul 9, 03:05 UTC1h 45m
2026-07-08 CKS402 - Jul 8, 14:30 UTCJul 8, 22:20 UTC7h 50m
2026-07-08 CKS402 - Jul 8, 10:35 UTCJul 8, 10:50 UTC15m
2026-07-08 CKS402 - Jul 8, 06:10 UTCJul 8, 07:00 UTC50m
2026-07-08 CKS9402 LAX → SUU Jul 8, 01:25 UTCJul 8, 02:25 UTC1h 0m
2026-07-07 CKS997 ANC → LAX Jul 7, 18:40 UTCJul 7, 23:05 UTC4h 25m
2026-07-07 CKS997 ICN → ANC Jul 7, 09:20 UTCJul 7, 16:40 UTC7h 20m

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 N744CK page for operator, model, and routing details .

Mode-S AA01A2 frequently asked

What is Mode-S code AA01A2?
AA01A2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N744CK.
Where is Mode-S AA01A2 registered?
Mode-S code AA01A2 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 AA01A2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA01A2, octal 52400642, decimal 11,141,538.
What flights does AA01A2 operate?
Mode-S AA01A2 has broadcast 20 distinct callsigns, including CKS368, CKS369, CKS893, CKS527, CKS819.