Apparatus

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sensors Mode-S transponder

AA5457

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N765CK · BOEING 767-300 · operated by KALITTA AIR LLC

Hex
AA5457
Octal
52452127
Decimal
11,162,711
Country
US
Tail
N765CK
Type
B763
No current signal · last broadcast 3h ago
Flights observed
119
Distinct callsigns
19
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S AA5457.

Country allocation

The ICAO 24-bit address AA5457 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
CSB821 21 Air 21 2026-05-08
CSB421 21 Air 21 2026-05-09
CSB529 21 Air 12 2026-05-15
CSB129 21 Air 11 2026-05-16
CSB588 21 Air 10 2026-05-22
CSB188 21 Air 10 2026-05-23
CSB594 21 Air 8 2026-05-29
CSB194 21 Air 8 2026-05-30
CSB507 21 Air 3 2026-05-27
CSB107 21 Air 3 2026-05-28
CSB926 21 Air 2 2026-04-29
CSB925 21 Air 2 2026-04-28
CSB1421 21 Air 2 2026-05-10
CSB585 21 Air 1 2026-05-26
CSB2183 21 Air 1 2026-04-27
CSB2020 21 Air 1 2026-04-29
CSB2000 21 Air 1 2026-04-30
CSB185 21 Air 1 2026-05-27
CSB1821 21 Air 1 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSB194 DEN → CVG May 30, 04:35 UTCMay 30, 06:45 UTC2h 10m
2026-05-30 CSB194 DEN → CVG May 30, 01:25 UTCMay 30, 02:35 UTC1h 10m
2026-05-29 CSB594 CVG → DEN May 29, 14:50 UTCMay 29, 15:55 UTC1h 5m
2026-05-29 CSB594 CVG → DEN May 29, 10:40 UTCMay 29, 13:00 UTC2h 20m
2026-05-29 CSB194 DEN → CVG May 29, 04:45 UTCMay 29, 06:55 UTC2h 10m
2026-05-29 CSB194 DEN → CVG May 29, 02:15 UTCMay 29, 03:10 UTC55m
2026-05-28 CSB594 CVG → DEN May 28, 14:35 UTCMay 28, 15:40 UTC1h 5m
2026-05-28 CSB594 CVG → DEN May 28, 11:05 UTCMay 28, 13:25 UTC2h 20m
2026-05-28 CSB107 HRL → CVG May 28, 02:35 UTCMay 28, 04:55 UTC2h 20m
2026-05-27 CSB507 CVG → HRL May 27, 11:00 UTCMay 27, 13:45 UTC2h 45m
2026-05-27 CSB185 MSP → CVG May 27, 03:39 UTCMay 27, 04:55 UTC1h 15m
2026-05-26 CSB585 CVG → MSP May 26, 10:10 UTCMay 26, 11:34 UTC1h 25m
2026-05-24 CSB194 DEN → CVG May 24, 17:05 UTCMay 24, 19:15 UTC2h 10m
2026-05-24 CSB594 CVG → DEN May 24, 11:35 UTCMay 24, 14:05 UTC2h 30m
2026-05-23 CSB188 BOS → BWI May 23, 05:00 UTCMay 23, 06:15 UTC1h 15m
2026-05-23 CSB188 BOS → BWI May 23, 02:10 UTCMay 23, 03:20 UTC1h 9m
2026-05-22 CSB588 CVG → BWI May 22, 12:55 UTCMay 22, 13:50 UTC55m
2026-05-22 CSB588 CVG → BWI May 22, 10:35 UTCMay 22, 11:35 UTC1h 0m
2026-05-22 CSB188 BOS → BWI May 22, 05:35 UTCMay 22, 06:45 UTC1h 10m
2026-05-22 CSB188 BOS → BWI May 22, 03:10 UTCMay 22, 04:15 UTC1h 5m
2026-05-21 CSB588 CVG → BWI May 21, 13:05 UTCMay 21, 13:55 UTC50m
2026-05-21 CSB588 CVG → BWI May 21, 11:00 UTCMay 21, 11:55 UTC55m
2026-05-21 CSB188 BOS → BWI May 21, 05:15 UTCMay 21, 06:20 UTC1h 5m
2026-05-21 CSB188 BOS → BWI May 21, 02:25 UTCMay 21, 03:35 UTC1h 10m
2026-05-20 CSB588 CVG → BWI May 20, 13:30 UTCMay 20, 14:45 UTC1h 15m
2026-05-20 CSB588 CVG → BWI May 20, 11:00 UTCMay 20, 12:00 UTC1h 0m
2026-05-20 CSB188 BOS → BWI May 20, 05:05 UTCMay 20, 06:15 UTC1h 10m
2026-05-20 CSB188 BOS → BWI May 20, 02:15 UTCMay 20, 03:15 UTC1h 0m
2026-05-19 CSB588 CVG → BWI May 19, 12:45 UTCMay 19, 13:50 UTC1h 5m
2026-05-19 CSB588 CVG → BWI May 19, 10:35 UTCMay 19, 11:35 UTC1h 0m
2026-05-19 CSB188 BOS → BWI May 19, 04:40 UTCMay 19, 05:50 UTC1h 10m
2026-05-19 CSB188 BOS → BWI May 19, 02:10 UTCMay 19, 03:10 UTC1h 0m
2026-05-18 CSB588 CVG → BWI May 18, 09:00 UTCMay 18, 09:55 UTC55m
2026-05-18 CSB588 CVG → BWI May 18, 06:25 UTCMay 18, 07:30 UTC1h 5m
2026-05-17 CSB194 DEN → CVG May 17, 16:45 UTCMay 17, 19:05 UTC2h 20m
2026-05-17 CSB594 CVG → DEN May 17, 12:10 UTCMay 17, 14:40 UTC2h 30m
2026-05-16 CSB129 ELP → CVG May 16, 04:50 UTCMay 16, 07:20 UTC2h 31m
2026-05-16 CSB129 ELP → CVG May 16, 01:15 UTCMay 16, 02:35 UTC1h 20m
2026-05-15 CSB529 CVG → ELP May 15, 15:45 UTCMay 15, 17:10 UTC1h 25m
2026-05-15 CSB529 CVG → ELP May 15, 11:20 UTCMay 15, 14:10 UTC2h 50m
2026-05-15 CSB129 ELP → CVG May 15, 04:05 UTCMay 15, 06:40 UTC2h 35m
2026-05-15 CSB129 ELP → CVG May 15, 01:20 UTCMay 15, 02:40 UTC1h 20m
2026-05-14 CSB529 CVG → ELP May 14, 16:55 UTCMay 14, 18:25 UTC1h 30m
2026-05-14 CSB529 CVG → ELP May 14, 11:10 UTCMay 14, 14:05 UTC2h 55m
2026-05-14 CSB129 ELP → CVG May 14, 04:15 UTCMay 14, 06:50 UTC2h 35m
2026-05-14 CSB129 ELP → CVG May 14, 01:15 UTCMay 14, 02:30 UTC1h 15m
2026-05-13 CSB529 CVG → ELP May 13, 15:20 UTCMay 13, 16:45 UTC1h 25m
2026-05-13 CSB529 CVG → ELP May 13, 11:20 UTCMay 13, 14:15 UTC2h 55m
2026-05-13 CSB129 ELP → CVG May 13, 04:45 UTCMay 13, 06:45 UTC2h 0m
2026-05-13 CSB129 ELP → CVG May 13, 01:05 UTCMay 13, 02:30 UTC1h 25m

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 N765CK page for operator, model, and routing details .

Mode-S AA5457 frequently asked

What is Mode-S code AA5457?
AA5457 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N765CK.
Where is Mode-S AA5457 registered?
Mode-S code AA5457 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 AA5457 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA5457, octal 52452127, decimal 11,162,711.
What flights does AA5457 operate?
Mode-S AA5457 has broadcast 19 distinct callsigns, including CSB821, CSB421, CSB529, CSB129, CSB588.