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sensors Mode-S transponder

AA4CE9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N763CK · BOEING 767-300 · operated by KALITTA AIR LLC

Hex
AA4CE9
Octal
52446351
Decimal
11,160,809
Country
US
Tail
N763CK
Type
B763
Transponder active on ground
Flights observed
241
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S AA4CE9.

Country allocation

The ICAO 24-bit address AA4CE9 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
ABX520 - 71 2026-07-13
ABX120 - 64 2026-07-14
ABX502 - 10 2026-06-24
ABX102 - 10 2026-06-25
ABX845 - 7 2026-06-19
ABX410 ABX Air 7 2026-06-14
ABX1520 - 7 2026-07-12
ABX1120 - 7 2026-07-12
ABX814 ABX Air 6 2026-07-07
ABX414 - 6 2026-07-08
ABX803 ABX Air 4 2026-06-05
ABX797 - 4 2026-07-10
ABX445 - 4 2026-06-20
ABX403 ABX Air 4 2026-06-06
ABX397 - 4 2026-07-11
ABX810 ABX Air 3 2026-06-14
ABX2246 ABX Air 3 2026-05-19
ABX880 ABX Air 2 2026-05-18
ABX583 ABX Air 2 2026-05-19
ABX552 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ABX120 - Jul 14, 03:30 UTCJul 14, 05:20 UTC1h 50m
2026-07-14 ABX120 - Jul 14, 01:40 UTCJul 14, 02:20 UTC40m
2026-07-13 ABX520 - Jul 13, 07:55 UTCJul 13, 08:30 UTC35m
2026-07-13 ABX520 - Jul 13, 04:45 UTCJul 13, 06:35 UTC1h 50m
2026-07-12 ABX1120 - Jul 12, 14:20 UTCJul 12, 16:20 UTC2h 0m
2026-07-12 ABX1520 - Jul 12, 10:55 UTCJul 12, 12:45 UTC1h 50m
2026-07-11 ABX397 ORD → CVG Jul 11, 04:55 UTCJul 11, 05:35 UTC40m
2026-07-10 ABX797 - Jul 10, 11:45 UTCJul 10, 12:45 UTC1h 0m
2026-07-10 ABX120 - Jul 10, 03:30 UTCJul 10, 05:40 UTC2h 10m
2026-07-10 ABX120 - Jul 10, 01:20 UTCJul 10, 02:00 UTC40m
2026-07-09 ABX520 - Jul 9, 15:30 UTCJul 9, 16:05 UTC35m
2026-07-09 ABX520 - Jul 9, 12:25 UTCJul 9, 14:15 UTC1h 50m
2026-07-09 ABX120 - Jul 9, 03:10 UTCJul 9, 05:05 UTC1h 55m
2026-07-09 ABX120 - Jul 9, 01:35 UTCJul 9, 02:10 UTC35m
2026-07-08 ABX520 - Jul 8, 14:40 UTCJul 8, 15:10 UTC30m
2026-07-08 ABX520 - Jul 8, 11:25 UTCJul 8, 13:30 UTC2h 5m
2026-07-08 ABX414 - Jul 8, 03:40 UTCJul 8, 07:30 UTC3h 50m
2026-07-08 ABX414 PDX → SEA Jul 8, 01:50 UTCJul 8, 02:20 UTC30m
2026-07-07 ABX814 SEA → PDX Jul 7, 16:45 UTCJul 7, 17:15 UTC30m
2026-07-07 ABX814 SEA → PDX Jul 7, 10:35 UTCJul 7, 14:50 UTC4h 15m
2026-07-07 ABX120 - Jul 7, 04:30 UTCJul 7, 06:30 UTC2h 0m
2026-07-07 ABX120 - Jul 7, 02:50 UTCJul 7, 03:25 UTC35m
2026-07-06 ABX520 - Jul 6, 08:30 UTCJul 6, 09:05 UTC35m
2026-07-06 ABX520 - Jul 6, 05:00 UTCJul 6, 06:55 UTC1h 55m
2026-07-05 ABX1120 - Jul 5, 15:05 UTCJul 5, 16:55 UTC1h 50m
2026-07-05 ABX1520 - Jul 5, 11:30 UTCJul 5, 13:25 UTC1h 55m
2026-07-04 ABX152 JFK → CVG Jul 4, 05:10 UTCJul 4, 06:35 UTC1h 25m
2026-07-04 ABX2022 CVG → JFK Jul 4, 00:40 UTCJul 4, 03:05 UTC2h 25m
2026-07-03 ABX2021 JFK → CVG Jul 3, 14:45 UTCJul 3, 16:10 UTC1h 25m
2026-07-03 ABX552 CVG → JFK Jul 3, 09:55 UTCJul 3, 11:25 UTC1h 30m
2026-07-03 ABX120 - Jul 3, 03:30 UTCJul 3, 05:25 UTC1h 55m
2026-07-03 ABX120 - Jul 3, 01:40 UTCJul 3, 02:20 UTC40m
2026-07-02 ABX520 - Jul 2, 15:20 UTCJul 2, 15:55 UTC35m
2026-07-02 ABX520 - Jul 2, 11:50 UTCJul 2, 13:40 UTC1h 50m
2026-07-02 ABX414 SEA → CVG Jul 2, 03:25 UTCJul 2, 07:20 UTC3h 55m
2026-07-02 ABX414 PDX → SEA Jul 2, 01:30 UTCJul 2, 02:05 UTC35m
2026-07-01 ABX814 SEA → PDX Jul 1, 16:50 UTCJul 1, 17:20 UTC30m
2026-07-01 ABX814 SEA → PDX Jul 1, 11:05 UTCJul 1, 15:20 UTC4h 15m
2026-07-01 ABX414 SEA → CVG Jul 1, 03:50 UTCJul 1, 07:40 UTC3h 50m
2026-07-01 ABX414 PDX → SEA Jul 1, 02:05 UTCJul 1, 02:40 UTC35m
2026-06-30 ABX814 SEA → PDX Jun 30, 16:55 UTCJun 30, 17:30 UTC35m
2026-06-30 ABX814 SEA → PDX Jun 30, 10:55 UTCJun 30, 15:20 UTC4h 25m
2026-06-30 ABX441 - Jun 30, 03:05 UTCJun 30, 04:30 UTC1h 25m
2026-06-29 ABX841 - Jun 29, 07:55 UTCJun 29, 09:14 UTC1h 20m
2026-06-28 ABX1120 - Jun 28, 15:05 UTCJun 28, 17:00 UTC1h 55m
2026-06-28 ABX1520 - Jun 28, 11:14 UTCJun 28, 13:19 UTC2h 5m
2026-06-27 ABX120 - Jun 27, 03:40 UTCJun 27, 05:29 UTC1h 50m
2026-06-27 ABX120 - Jun 27, 01:44 UTCJun 27, 02:20 UTC35m
2026-06-26 ABX520 - Jun 26, 14:39 UTCJun 26, 15:15 UTC35m
2026-06-26 ABX520 - Jun 26, 11:24 UTCJun 26, 13:24 UTC2h 0m

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 N763CK page for operator, model, and routing details .

Mode-S AA4CE9 frequently asked

What is Mode-S code AA4CE9?
AA4CE9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N763CK.
Where is Mode-S AA4CE9 registered?
Mode-S code AA4CE9 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 AA4CE9 broadcasting right now?
Mode-S AA4CE9 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA4CE9, octal 52446351, decimal 11,160,809.
What flights does AA4CE9 operate?
Mode-S AA4CE9 has broadcast 20 distinct callsigns, including ABX520, ABX120, ABX502, ABX102, ABX845.