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sensors Mode-S transponder

A9FA34

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N742CK · BOEING 747-400 · operated by KALITTA AIR LLC

Hex
A9FA34
Octal
52375064
Decimal
11,139,636
Country
US
Tail
N742CK
Type
B744
No current signal · last broadcast Jul 26, 20:00 UTC
Flights observed
50
Distinct callsigns
19
Country
US
Last broadcast
Jul 26, 20:00 UTC

Last known position

Most recent position reported by Mode-S A9FA34.

Country allocation

The ICAO 24-bit address A9FA34 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 19 distinct

Callsign Airline Flights Last seen
CKS368 Kalitta Air 8 2026-07-24
CKS369 Kalitta Air 6 2026-07-25
CKS893 - 5 2026-07-14
CKS533 - 4 2026-07-18
CKS918 - 3 2026-07-02
CKS917 - 3 2026-07-03
CKS819 - 3 2026-07-05
CKS810 - 3 2026-07-06
CKS9744 - 2 2026-07-11
CKS534 Kalitta Air 2 2026-07-18
CKS531 Kalitta Air 2 2026-07-20
CKS370 Kalitta Air 2 2026-07-26
CMB437 - 1 2026-07-11
CMB163 - 1 2026-07-07
CKS9896 - 1 2026-07-07
CKS9894 - 1 2026-07-12
CKS9163 - 1 2026-07-06
CKS895 Kalitta Air 1 2026-07-08
CKS532 - 1 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CKS370 LAX → HNL Jul 26, 09:15 UTCJul 26, 19:50 UTC10h 35m
2026-07-25 CKS370 LAX → HNL Jul 25, 10:10 UTCJul 25, 15:05 UTC4h 55m
2026-07-25 CKS369 HNL → LAX Jul 25, 00:55 UTCJul 25, 05:40 UTC4h 45m
2026-07-24 CKS368 LAX → HNL Jul 24, 14:15 UTCJul 24, 14:40 UTC25m
2026-07-24 CKS368 LAX → HNL Jul 24, 09:40 UTCJul 24, 10:05 UTC25m
2026-07-24 CKS369 HNL → LAX Jul 24, 01:05 UTCJul 24, 05:55 UTC4h 50m
2026-07-23 CKS368 LAX → HNL Jul 23, 14:35 UTCJul 23, 15:00 UTC25m
2026-07-23 CKS368 LAX → HNL Jul 23, 10:00 UTCJul 23, 10:25 UTC25m
2026-07-23 CKS369 HNL → LAX Jul 23, 01:15 UTCJul 23, 05:55 UTC4h 40m
2026-07-22 CKS368 LAX → HNL Jul 22, 15:05 UTCJul 22, 15:35 UTC30m
2026-07-22 CKS369 HNL → LAX Jul 22, 01:05 UTCJul 22, 05:25 UTC4h 20m
2026-07-21 CKS368 LAX → HNL Jul 21, 17:15 UTCJul 21, 17:40 UTC25m
2026-07-21 CKS368 LAX → HNL Jul 21, 12:30 UTCJul 21, 12:55 UTC25m
2026-07-21 CKS369 HNL → LAX Jul 21, 07:45 UTCJul 21, 09:15 UTC1h 30m
2026-07-21 CKS369 HNL → LAX Jul 21, 04:25 UTCJul 21, 04:35 UTC10m
2026-07-20 CKS368 LAX → HNL Jul 20, 19:30 UTCJul 21, 00:35 UTC5h 4m
2026-07-20 CKS531 YQX → LGG Jul 20, 10:45 UTCJul 20, 15:30 UTC4h 45m
2026-07-20 CKS531 YQX → LGG Jul 20, 01:45 UTCJul 20, 09:10 UTC7h 25m
2026-07-18 CKS534 ORD → ANC Jul 18, 11:00 UTCJul 19, 00:35 UTC13h 35m
2026-07-18 CKS533 ANC → ORD Jul 18, 01:25 UTCJul 18, 06:30 UTC5h 6m
2026-07-17 CKS533 ICN → ANC Jul 17, 16:04 UTCJul 17, 23:45 UTC7h 40m
2026-07-16 CKS534 ORD → ANC Jul 16, 11:25 UTCJul 17, 00:35 UTC13h 10m
2026-07-16 CKS533 - Jul 16, 01:10 UTCJul 16, 06:15 UTC5h 5m
2026-07-15 CKS533 ICN → ANC Jul 15, 15:55 UTCJul 15, 23:20 UTC7h 25m
2026-07-14 CKS532 - Jul 14, 17:50 UTCJul 15, 07:10 UTC13h 19m
2026-07-14 CKS893 ANC → ORD Jul 14, 08:55 UTCJul 14, 14:05 UTC5h 10m
2026-07-13 CKS893 ICN → ANC Jul 13, 18:10 UTCJul 14, 01:35 UTC7h 25m
2026-07-12 CKS893 - Jul 12, 23:05 UTCJul 12, 23:25 UTC20m
2026-07-12 CKS9894 - Jul 12, 08:45 UTCJul 12, 11:40 UTC2h 55m
2026-07-11 CMB437 - Jul 11, 19:45 UTCJul 12, 03:45 UTC8h 0m
2026-07-11 CKS9744 - Jul 11, 13:15 UTCJul 11, 14:40 UTC1h 25m
2026-07-09 CKS893 ANC → ORD Jul 9, 11:40 UTCJul 9, 17:05 UTC5h 25m
2026-07-09 CKS893 ICN → ANC Jul 9, 02:10 UTCJul 9, 09:45 UTC7h 35m
2026-07-08 CKS895 ANC → JFK Jul 8, 23:05 UTCJul 8, 23:20 UTC15m
2026-07-07 CKS9896 - Jul 7, 17:05 UTCJul 7, 20:50 UTC3h 45m
2026-07-07 CMB163 - Jul 7, 05:25 UTCJul 7, 12:25 UTC7h 0m
2026-07-06 CKS9163 - Jul 6, 18:30 UTCJul 6, 22:55 UTC4h 25m
2026-07-06 CKS810 - Jul 6, 06:50 UTCJul 6, 10:05 UTC3h 15m
2026-07-05 CKS819 - Jul 5, 21:00 UTCJul 6, 02:50 UTC5h 50m
2026-07-05 CKS819 ICN → ANC Jul 5, 04:30 UTCJul 5, 11:45 UTC7h 15m
2026-07-05 CKS819 - Jul 5, 01:50 UTCJul 5, 02:20 UTC30m
2026-07-04 CKS810 - Jul 4, 12:05 UTCJul 4, 20:05 UTC8h 0m
2026-07-04 CKS810 - Jul 4, 04:35 UTCJul 4, 10:15 UTC5h 40m
2026-07-03 CKS917 ANC → ORD Jul 3, 14:35 UTCJul 3, 20:20 UTC5h 45m
2026-07-02 CKS917 - Jul 2, 17:05 UTCJul 3, 12:40 UTC19h 35m
2026-07-02 CKS917 - Jul 2, 16:45 UTCJul 3, 12:40 UTC19h 55m
2026-07-02 CKS918 - Jul 2, 11:05 UTCJul 3, 07:00 UTC19h 55m
2026-07-02 CKS918 - Jul 2, 10:55 UTCJul 3, 07:00 UTC20h 5m
2026-07-01 CKS918 - Jul 1, 22:45 UTCJul 2, 04:10 UTC5h 25m
2026-06-26 CKS9744 ORD → OSC Jun 26, 15:39 UTCJun 26, 16:30 UTC50m

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 N742CK page for operator, model, and routing details .

Mode-S A9FA34 frequently asked

What is Mode-S code A9FA34?
A9FA34 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N742CK.
Where is Mode-S A9FA34 registered?
Mode-S code A9FA34 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 A9FA34 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9FA34, octal 52375064, decimal 11,139,636.
What flights does A9FA34 operate?
Mode-S A9FA34 has broadcast 19 distinct callsigns, including CKS368, CKS369, CKS893, CKS533, CKS918.