Apparatus

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sensors Mode-S transponder

A983B7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N712CK · BOEING 747-400 · operated by KALITTA AIR LLC

Hex
A983B7
Octal
52301667
Decimal
11,109,303
Country
US
Tail
N712CK
Type
B744
No current signal · last broadcast 1d ago
Flights observed
119
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A983B7.

Country allocation

The ICAO 24-bit address A983B7 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
CKS915 Kalitta Air 6 2026-07-18
CKS785 - 6 2026-06-21
CKS530 Kalitta Air 5 2026-06-26
CKS982 - 4 2026-07-19
CKS981 Kalitta Air 4 2026-07-20
CKS961 Kalitta Air 4 2026-06-14
CKS960 Kalitta Air 4 2026-06-13
CKS819 Kalitta Air 4 2026-06-08
CKS810 Kalitta Air 4 2026-06-08
CKS533 Kalitta Air 4 2026-07-25
CKS529 - 4 2026-07-13
CKS891 Kalitta Air 3 2026-06-10
CKS811 - 3 2026-07-16
CKS699 - 3 2026-06-23
CKS698 - 3 2026-06-23
CKS563 - 3 2026-06-29
CKS562 - 3 2026-06-29
CKS531D - 3 2026-06-25
CKS531 Kalitta Air 3 2026-06-27
CKS464 - 3 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CKS602 ORD → ICN Jul 26, 04:50 UTCJul 26, 18:50 UTC14h 1m
2026-07-25 CKS533 HKG → ANC Jul 25, 17:35 UTCJul 25, 22:45 UTC5h 10m
2026-07-25 CKS533 HKG → ANC Jul 25, 08:35 UTCJul 25, 15:50 UTC7h 15m
2026-07-23 CKS534 ORD → ANC Jul 23, 12:45 UTCJul 24, 02:35 UTC13h 50m
2026-07-23 CKS533 HKG → ANC Jul 23, 01:10 UTCJul 23, 06:15 UTC5h 5m
2026-07-22 CKS533 HKG → ANC Jul 22, 15:10 UTCJul 22, 22:20 UTC7h 10m
2026-07-21 CKS532 ANC → HKG Jul 21, 13:10 UTCJul 22, 00:35 UTC11h 25m
2026-07-20 CKS981 ANC → ORD Jul 20, 19:30 UTCJul 21, 00:10 UTC4h 39m
2026-07-20 CKS981 ANC → ORD Jul 20, 09:50 UTCJul 20, 17:30 UTC7h 40m
2026-07-19 CKS982 ANC → ICN Jul 19, 16:20 UTCJul 20, 05:45 UTC13h 25m
2026-07-19 CKS982 YYZ → ANC Jul 19, 03:20 UTCJul 19, 09:40 UTC6h 20m
2026-07-18 CKS915 ANC → CVG Jul 18, 18:35 UTCJul 19, 00:00 UTC5h 25m
2026-07-18 CKS915 ANC → CVG Jul 18, 01:45 UTCJul 18, 16:50 UTC15h 6m
2026-07-17 CKS915 ANC → CVG Jul 17, 17:50 UTCJul 18, 16:50 UTC23h 1m
2026-07-17 CKS9916 ORD → ANC Jul 17, 16:15 UTCJul 18, 15:40 UTC23h 26m
2026-07-17 CMB163 - Jul 17, 03:34 UTCJul 17, 10:35 UTC7h 0m
2026-07-16 CKS9163 XJD → LGG Jul 16, 21:50 UTCJul 16, 23:20 UTC1h 30m
2026-07-16 CKS811 - Jul 16, 05:10 UTCJul 16, 10:15 UTC5h 5m
2026-07-15 CKS811 ICN → ANC Jul 15, 19:45 UTCJul 16, 03:10 UTC7h 25m
2026-07-15 CKS811 - Jul 15, 17:15 UTCJul 15, 17:40 UTC25m
2026-07-15 CKS8812 - Jul 15, 03:10 UTCJul 15, 06:10 UTC3h 0m
2026-07-14 CMB454 - Jul 14, 13:40 UTCJul 14, 22:00 UTC8h 20m
2026-07-14 CKS9706 - Jul 14, 07:50 UTCJul 14, 08:55 UTC1h 5m
2026-07-14 CKS9706 - Jul 14, 07:15 UTCJul 14, 07:45 UTC30m
2026-07-13 CKS529 - Jul 13, 15:40 UTCJul 13, 20:55 UTC5h 15m
2026-07-13 CKS529 - Jul 13, 07:20 UTCJul 13, 13:40 UTC6h 20m
2026-07-12 CKS528 - Jul 12, 16:35 UTCJul 13, 04:35 UTC12h 0m
2026-07-11 CKS915 ANC → ORD Jul 11, 08:10 UTCJul 11, 13:35 UTC5h 25m
2026-07-10 CKS915 - Jul 10, 15:15 UTCJul 11, 06:35 UTC15h 21m
2026-07-10 CKS915 - Jul 10, 09:50 UTCJul 11, 06:35 UTC20h 45m
2026-07-10 CKS9912 ANC → ANC Jul 10, 09:20 UTCJul 11, 06:35 UTC21h 15m
2026-07-10 CKS9912 ORD → ANC Jul 10, 00:30 UTCJul 10, 06:15 UTC5h 45m
2026-07-09 CKS529 - Jul 9, 15:00 UTCJul 9, 20:30 UTC5h 30m
2026-07-09 CKS529 - Jul 9, 06:10 UTCJul 9, 12:50 UTC6h 40m
2026-07-08 CKS528 - Jul 8, 15:30 UTCJul 9, 02:50 UTC11h 20m
2026-07-08 CKS9710 WRI → ANC Jul 8, 04:00 UTCJul 8, 05:05 UTC1h 5m
2026-07-07 CKS463 ANC → SUU Jul 7, 19:05 UTCJul 7, 22:50 UTC3h 45m
2026-07-07 CKS463 OSN → ANC Jul 7, 08:55 UTCJul 7, 16:40 UTC7h 45m
2026-07-07 CKS463 OKO → OSN Jul 7, 03:05 UTCJul 7, 04:45 UTC1h 40m
2026-07-06 CKS464 ANC → OKO Jul 6, 17:45 UTCJul 7, 00:15 UTC6h 30m
2026-07-06 CKS464 - Jul 6, 05:00 UTCJul 6, 08:55 UTC3h 55m
2026-07-06 CKS464 - Jul 6, 04:40 UTCJul 6, 04:45 UTC5m
2026-07-06 CKS9710 WRI → ANC Jul 6, 00:45 UTCJul 6, 01:40 UTC55m
2026-07-05 CKS9401 - Jul 5, 06:20 UTCJul 5, 07:15 UTC55m
2026-07-04 CKS401 - Jul 4, 22:05 UTCJul 5, 02:25 UTC4h 20m
2026-07-04 CKS401 - Jul 4, 10:00 UTCJul 4, 10:45 UTC45m
2026-07-04 CKS401 OSN → OKO Jul 4, 02:30 UTCJul 4, 04:05 UTC1h 35m
2026-07-03 CKS400 EDF → OSN Jul 3, 15:55 UTCJul 4, 00:30 UTC8h 35m
2026-07-03 CKS400 - Jul 3, 08:00 UTCJul 3, 11:30 UTC3h 30m
2026-07-02 CKS403 EDF → SUU Jul 2, 23:10 UTCJul 3, 02:50 UTC3h 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 N712CK page for operator, model, and routing details .

Mode-S A983B7 frequently asked

What is Mode-S code A983B7?
A983B7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N712CK.
Where is Mode-S A983B7 registered?
Mode-S code A983B7 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 A983B7 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A983B7, octal 52301667, decimal 11,109,303.
What flights does A983B7 operate?
Mode-S A983B7 has broadcast 20 distinct callsigns, including CKS915, CKS785, CKS530, CKS982, CKS981.