Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA457B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N761CK · BOEING 767-300 · operated by KALITTA AIR LLC

Hex
AA457B
Octal
52442573
Decimal
11,158,907
Country
US
Tail
N761CK
Type
B763
No current signal · last broadcast Jul 26, 16:50 UTC
Flights observed
248
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 16:50 UTC

Last known position

Most recent position reported by Mode-S AA457B.

Country allocation

The ICAO 24-bit address AA457B 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
CSB594 - 47 2026-07-17
CSB194 - 40 2026-07-18
CSB529 21 Air 33 2026-07-24
CSB129 21 Air 30 2026-07-25
CSB821 - 21 2026-06-24
CSB421 - 21 2026-06-25
CSB805 - 9 2026-07-13
CSB405 - 9 2026-07-14
CSB1821 21 Air 6 2026-07-26
CSB1421 21 Air 5 2026-07-26
CSB588 - 4 2026-06-16
CSB188 - 4 2026-06-17
CSB507 - 3 2026-06-19
CSB107 - 3 2026-06-20
CSB926 - 2 2026-06-18
CSB925 21 Air 2 2026-06-17
CSB2023 21 Air 2 2026-05-22
CSB9170 21 Air 1 2026-07-20
CSB9169 21 Air 1 2026-07-18
CSB2022 21 Air 1 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSB1421 GSO → CVG Jul 26, 14:25 UTCJul 26, 16:50 UTC2h 25m
2026-07-26 CSB1821 CVG → GSO Jul 26, 09:30 UTCJul 26, 11:40 UTC2h 10m
2026-07-25 CSB129 ELP → CVG Jul 25, 01:20 UTCJul 25, 09:00 UTC7h 40m
2026-07-24 CSB529 CVG → ELP Jul 24, 15:40 UTCJul 24, 16:40 UTC1h 0m
2026-07-24 CSB529 CVG → ELP Jul 24, 11:15 UTCJul 24, 13:40 UTC2h 25m
2026-07-24 CSB129 ELP → CVG Jul 24, 01:30 UTCJul 24, 06:55 UTC5h 25m
2026-07-23 CSB529 CVG → ELP Jul 23, 16:00 UTCJul 23, 17:05 UTC1h 5m
2026-07-23 CSB529 CVG → ELP Jul 23, 11:10 UTCJul 23, 13:40 UTC2h 30m
2026-07-23 CSB129 ELP → CVG Jul 23, 01:25 UTCJul 23, 06:50 UTC5h 25m
2026-07-22 CSB529 CVG → ELP Jul 22, 16:05 UTCJul 22, 17:15 UTC1h 10m
2026-07-22 CSB529 CVG → ELP Jul 22, 11:35 UTCJul 22, 14:05 UTC2h 30m
2026-07-22 CSB129 ELP → CVG Jul 22, 01:30 UTCJul 22, 05:25 UTC3h 55m
2026-07-21 CSB529 CVG → ELP Jul 21, 16:25 UTCJul 21, 17:35 UTC1h 10m
2026-07-21 CSB529 CVG → ELP Jul 21, 11:20 UTCJul 21, 13:50 UTC2h 30m
2026-07-20 CSB9170 BQK → CVG Jul 20, 04:20 UTCJul 20, 05:35 UTC1h 15m
2026-07-18 CSB9169 CVG → BQK Jul 18, 11:00 UTCJul 18, 12:15 UTC1h 15m
2026-07-18 CSB194 - Jul 18, 04:50 UTCJul 18, 07:05 UTC2h 15m
2026-07-18 CSB194 - Jul 18, 01:30 UTCJul 18, 02:29 UTC1h 0m
2026-07-17 CSB594 DEN → SLC Jul 17, 14:35 UTCJul 17, 15:35 UTC1h 0m
2026-07-17 CSB594 - Jul 17, 10:35 UTCJul 17, 12:55 UTC2h 20m
2026-07-17 CSB194 - Jul 17, 04:39 UTCJul 17, 06:54 UTC2h 15m
2026-07-17 CSB194 - Jul 17, 01:39 UTCJul 17, 02:45 UTC1h 5m
2026-07-16 CSB594 DEN → SLC Jul 16, 14:50 UTCJul 16, 15:49 UTC1h 0m
2026-07-16 CSB594 CVG → DEN Jul 16, 10:55 UTCJul 16, 13:05 UTC2h 10m
2026-07-16 CSB2021 AUS → CVG Jul 16, 03:10 UTCJul 16, 05:25 UTC2h 15m
2026-07-15 CSB2020 - Jul 15, 09:50 UTCJul 15, 11:50 UTC2h 0m
2026-07-14 CSB405 - Jul 14, 02:50 UTCJul 14, 06:55 UTC4h 5m
2026-07-13 CSB805 - Jul 13, 06:40 UTCJul 13, 10:45 UTC4h 5m
2026-07-12 CSB194 - Jul 12, 16:30 UTCJul 12, 18:45 UTC2h 15m
2026-07-12 CSB594 - Jul 12, 11:50 UTCJul 12, 14:05 UTC2h 15m
2026-07-11 CSB194 DEN → CVG Jul 11, 04:20 UTCJul 11, 06:30 UTC2h 10m
2026-07-11 CSB194 SLC → DEN Jul 11, 01:20 UTCJul 11, 02:15 UTC55m
2026-07-10 CSB594 DEN → SLC Jul 10, 14:25 UTCJul 10, 15:25 UTC1h 0m
2026-07-10 CSB594 - Jul 10, 10:45 UTCJul 10, 13:00 UTC2h 15m
2026-07-10 CSB594 - Jul 10, 10:30 UTCJul 10, 10:40 UTC10m
2026-07-10 CSB194 DEN → CVG Jul 10, 05:05 UTCJul 10, 07:25 UTC2h 20m
2026-07-10 CSB194 - Jul 10, 02:25 UTCJul 10, 03:30 UTC1h 5m
2026-07-09 CSB594 DEN → SLC Jul 9, 15:30 UTCJul 9, 16:30 UTC1h 0m
2026-07-09 CSB594 - Jul 9, 11:30 UTCJul 9, 14:05 UTC2h 35m
2026-07-09 CSB194 DEN → CVG Jul 9, 05:45 UTCJul 9, 07:55 UTC2h 10m
2026-07-09 CSB194 SLC → DEN Jul 9, 02:20 UTCJul 9, 03:35 UTC1h 15m
2026-07-08 CSB594 DEN → SLC Jul 8, 14:30 UTCJul 8, 15:35 UTC1h 5m
2026-07-08 CSB594 - Jul 8, 10:40 UTCJul 8, 12:55 UTC2h 15m
2026-07-08 CSB194 DEN → CVG Jul 8, 04:20 UTCJul 8, 06:35 UTC2h 15m
2026-07-08 CSB194 SLC → DEN Jul 8, 01:30 UTCJul 8, 02:25 UTC55m
2026-07-07 CSB594 DEN → SLC Jul 7, 14:10 UTCJul 7, 15:20 UTC1h 10m
2026-07-07 CSB594 - Jul 7, 10:40 UTCJul 7, 13:00 UTC2h 20m
2026-07-07 CSB405 SFO → CVG Jul 7, 03:55 UTCJul 7, 07:45 UTC3h 50m
2026-07-06 CSB805 - Jul 6, 06:15 UTCJul 6, 10:20 UTC4h 5m
2026-07-04 CSB129 - Jul 4, 01:10 UTCJul 4, 03:35 UTC2h 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 N761CK page for operator, model, and routing details .

Mode-S AA457B frequently asked

What is Mode-S code AA457B?
AA457B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N761CK.
Where is Mode-S AA457B registered?
Mode-S code AA457B 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 AA457B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA457B, octal 52442573, decimal 11,158,907.
What flights does AA457B operate?
Mode-S AA457B has broadcast 20 distinct callsigns, including CSB594, CSB194, CSB529, CSB129, CSB821.