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
Broadcasting now · callsign CSB821 · 33,000 ft
Flights observed
215
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Current position

AA5457 is currently broadcasting. Map zoomed to live position.

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 20 distinct

Callsign Airline Flights Last seen
CSB188 - 31 2026-07-11
CSB821 - 30 2026-07-13
CSB588 - 30 2026-07-10
CSB421 - 29 2026-07-14
CSB529 - 26 2026-06-12
CSB129 21 Air 25 2026-06-13
CSB594 21 Air 9 2026-05-31
CSB194 21 Air 9 2026-05-31
CSB1421 21 Air 4 2026-07-12
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
CSB1821 - 2 2026-07-12
CSB1529 - 2 2026-07-05
CSB9170 21 Air 1 2026-06-14
CSB9169 21 Air 1 2026-06-13
CSB585 21 Air 1 2026-05-26
CSB2183 21 Air 1 2026-04-27
CSB2020 21 Air 1 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSB421 - Jul 14, 04:30 UTCJul 14, 05:15 UTC45m
2026-07-13 CSB821 - Jul 13, 04:40 UTCJul 13, 05:31 UTC50m
2026-07-12 CSB1421 GSO → CVG Jul 12, 14:20 UTCJul 12, 16:50 UTC2h 30m
2026-07-12 CSB1821 - Jul 12, 09:50 UTCJul 12, 12:10 UTC2h 20m
2026-07-11 CSB188 BWI → CVG Jul 11, 04:50 UTCJul 11, 06:01 UTC1h 10m
2026-07-11 CSB188 BOS → BWI Jul 11, 02:10 UTCJul 11, 03:15 UTC1h 5m
2026-07-10 CSB588 - Jul 10, 13:30 UTCJul 10, 14:35 UTC1h 5m
2026-07-10 CSB588 - Jul 10, 11:10 UTCJul 10, 12:20 UTC1h 10m
2026-07-10 CSB188 BWI → CVG Jul 10, 05:10 UTCJul 10, 06:15 UTC1h 5m
2026-07-10 CSB188 BOS → BWI Jul 10, 02:40 UTCJul 10, 03:50 UTC1h 10m
2026-07-09 CSB588 - Jul 9, 13:55 UTCJul 9, 15:00 UTC1h 5m
2026-07-09 CSB588 - Jul 9, 11:00 UTCJul 9, 12:05 UTC1h 5m
2026-07-05 CSB1529 - Jul 5, 13:35 UTCJul 5, 20:40 UTC7h 5m
2026-07-03 CSB1421 GSO → CVG Jul 3, 14:10 UTCJul 3, 15:00 UTC50m
2026-07-03 CSB821 - Jul 3, 11:25 UTCJul 3, 12:20 UTC55m
2026-07-03 CSB421 - Jul 3, 04:25 UTCJul 3, 05:15 UTC50m
2026-07-02 CSB821 - Jul 2, 11:25 UTCJul 2, 12:20 UTC55m
2026-07-02 CSB421 - Jul 2, 04:25 UTCJul 2, 05:15 UTC50m
2026-07-01 CSB821 - Jul 1, 11:35 UTCJul 1, 12:30 UTC55m
2026-07-01 CSB421 - Jul 1, 04:30 UTCJul 1, 05:20 UTC50m
2026-06-30 CSB821 - Jun 30, 11:25 UTCJun 30, 12:15 UTC50m
2026-06-30 CSB421 - Jun 30, 04:45 UTCJun 30, 05:35 UTC50m
2026-06-29 CSB821 - Jun 29, 04:39 UTCJun 29, 05:24 UTC45m
2026-06-27 CSB188 BWI → CVG Jun 27, 04:15 UTCJun 27, 05:25 UTC1h 10m
2026-06-27 CSB188 BOS → BWI Jun 27, 02:09 UTCJun 27, 03:15 UTC1h 5m
2026-06-26 CSB588 - Jun 26, 12:50 UTCJun 26, 13:49 UTC1h 0m
2026-06-26 CSB588 - Jun 26, 10:39 UTCJun 26, 11:45 UTC1h 5m
2026-06-26 CSB188 BWI → CVG Jun 26, 04:50 UTCJun 26, 06:00 UTC1h 10m
2026-06-26 CSB188 BOS → BWI Jun 26, 02:34 UTCJun 26, 03:39 UTC1h 5m
2026-06-25 CSB588 - Jun 25, 12:54 UTCJun 25, 14:04 UTC1h 10m
2026-06-25 CSB588 - Jun 25, 10:35 UTCJun 25, 11:39 UTC1h 5m
2026-06-25 CSB188 BWI → CVG Jun 25, 04:14 UTCJun 25, 05:20 UTC1h 5m
2026-06-25 CSB188 BOS → BWI Jun 25, 01:59 UTCJun 25, 02:54 UTC55m
2026-06-24 CSB588 - Jun 24, 13:00 UTCJun 24, 13:54 UTC55m
2026-06-24 CSB588 - Jun 24, 10:30 UTCJun 24, 11:34 UTC1h 5m
2026-06-24 CSB188 - Jun 24, 04:30 UTCJun 24, 05:34 UTC1h 5m
2026-06-24 CSB188 BOS → BWI Jun 24, 02:15 UTCJun 24, 03:15 UTC1h 0m
2026-06-23 CSB588 - Jun 23, 13:50 UTCJun 23, 14:44 UTC55m
2026-06-23 CSB588 - Jun 23, 10:44 UTCJun 23, 11:59 UTC1h 15m
2026-06-23 CSB188 - Jun 23, 04:39 UTCJun 23, 05:49 UTC1h 10m
2026-06-23 CSB188 BOS → BWI Jun 23, 02:24 UTCJun 23, 03:29 UTC1h 5m
2026-06-22 CSB588 - Jun 22, 08:54 UTCJun 22, 09:54 UTC1h 0m
2026-06-22 CSB588 - Jun 22, 06:29 UTCJun 22, 07:30 UTC1h 0m
2026-06-21 CSB1129 - Jun 21, 18:00 UTCJun 21, 20:34 UTC2h 35m
2026-06-21 CSB1529 - Jun 21, 13:29 UTCJun 21, 16:10 UTC2h 40m
2026-06-20 CSB188 BWI → CVG Jun 20, 03:59 UTCJun 20, 05:19 UTC1h 20m
2026-06-20 CSB188 BOS → BWI Jun 20, 01:44 UTCJun 20, 02:54 UTC1h 10m
2026-06-19 CSB588 - Jun 19, 13:04 UTCJun 19, 14:09 UTC1h 5m
2026-06-19 CSB588 CVG → BWI Jun 19, 10:50 UTCJun 19, 11:54 UTC1h 5m
2026-06-19 CSB188 - Jun 19, 04:29 UTCJun 19, 05:34 UTC1h 5m

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?
Yes. Mode-S AA5457 is currently airborne.
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 20 distinct callsigns, including CSB188, CSB821, CSB588, CSB421, CSB529.