Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AA1E03

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N751CS · operated by UMB BANK NA TRUSTEE

Hex
AA1E03
Octal
52417003
Decimal
11,148,803
Country
US
Tail
N751CS
Type
B752
No current signal · last broadcast 5d ago
Flights observed
122
Distinct callsigns
20
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S AA1E03.

Country allocation

The ICAO 24-bit address AA1E03 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
CSB107 - 31 2026-07-09
CSB507 - 29 2026-07-08
CSB585 21 Air 12 2026-05-29
CSB185 21 Air 12 2026-05-30
CSB599 21 Air 6 2026-06-23
CSB805 21 Air 5 2026-07-03
CSB405 21 Air 5 2026-06-20
CSB199 21 Air 4 2026-06-23
CSB594 - 2 2026-06-30
CSB194 - 2 2026-07-01
CSB1507 - 2 2026-04-15
CSB9170 21 Air 1 2026-06-28
CSB9169 21 Air 1 2026-06-27
CSB2033 21 Air 1 2026-04-25
CSB2032 21 Air 1 2026-04-24
CSB2030 21 Air 1 2026-05-26
CSB2029 21 Air 1 2026-06-10
CSB2028 21 Air 1 2026-06-11
CSB2026 - 1 2026-06-12
CSB2025 - 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 CSB107 - Jul 9, 02:10 UTCJul 9, 05:00 UTC2h 50m
2026-07-08 CSB507 - Jul 8, 10:45 UTCJul 8, 13:20 UTC2h 35m
2026-07-08 CSB107 - Jul 8, 02:05 UTCJul 8, 04:25 UTC2h 20m
2026-07-07 CSB507 - Jul 7, 11:10 UTCJul 7, 13:35 UTC2h 25m
2026-07-07 CSB107 - Jul 7, 01:50 UTCJul 7, 04:10 UTC2h 20m
2026-07-06 CSB507 - Jul 6, 04:25 UTCJul 6, 06:50 UTC2h 25m
2026-07-03 CSB1405 SFO → CVG Jul 3, 17:35 UTCJul 3, 21:30 UTC3h 55m
2026-07-03 CSB805 CVG → SFO Jul 3, 11:15 UTCJul 3, 15:30 UTC4h 15m
2026-07-03 CSB107 - Jul 3, 01:45 UTCJul 3, 04:05 UTC2h 20m
2026-07-02 CSB507 - Jul 2, 12:10 UTCJul 2, 13:20 UTC1h 10m
2026-07-02 CSB507 - Jul 2, 11:05 UTCJul 2, 12:05 UTC1h 0m
2026-07-02 CSB107 - Jul 2, 02:05 UTCJul 2, 04:30 UTC2h 25m
2026-07-01 CSB507 - Jul 1, 11:00 UTCJul 1, 13:15 UTC2h 15m
2026-07-01 CSB194 - Jul 1, 04:20 UTCJul 1, 06:30 UTC2h 10m
2026-07-01 CSB194 SLC → DEN Jul 1, 01:25 UTCJul 1, 02:45 UTC1h 20m
2026-06-30 CSB594 DEN → SLC Jun 30, 14:45 UTCJun 30, 15:55 UTC1h 10m
2026-06-30 CSB594 - Jun 30, 10:35 UTCJun 30, 13:05 UTC2h 30m
2026-06-30 CSB107 - Jun 30, 01:45 UTCJun 30, 04:10 UTC2h 25m
2026-06-29 CSB507 - Jun 29, 05:00 UTCJun 29, 07:20 UTC2h 20m
2026-06-28 CSB9170 BQK → CVG Jun 28, 21:55 UTCJun 28, 23:09 UTC1h 15m
2026-06-27 CSB9169 CVG → BQK Jun 27, 11:14 UTCJun 27, 12:29 UTC1h 15m
2026-06-27 CSB107 - Jun 27, 01:39 UTCJun 27, 04:05 UTC2h 25m
2026-06-26 CSB507 - Jun 26, 11:00 UTCJun 26, 13:19 UTC2h 20m
2026-06-26 CSB107 - Jun 26, 01:50 UTCJun 26, 04:10 UTC2h 20m
2026-06-25 CSB507 - Jun 25, 10:50 UTCJun 25, 13:05 UTC2h 15m
2026-06-25 CSB107 - Jun 25, 01:54 UTCJun 25, 04:14 UTC2h 20m
2026-06-24 CSB507 - Jun 24, 10:45 UTCJun 24, 13:14 UTC2h 30m
2026-06-23 CSB199 MIA → CVG Jun 23, 15:19 UTCJun 23, 17:20 UTC2h 0m
2026-06-23 CSB599 CVG → MIA Jun 23, 08:04 UTCJun 23, 10:10 UTC2h 5m
2026-06-23 CSB107 - Jun 23, 02:09 UTCJun 23, 04:29 UTC2h 20m
2026-06-22 CSB507 - Jun 22, 05:29 UTCJun 22, 07:54 UTC2h 25m
2026-06-20 CSB405 SFO → CVG Jun 20, 02:59 UTCJun 20, 04:44 UTC1h 45m
2026-06-19 CSB805 CVG → SFO Jun 19, 11:04 UTCJun 19, 15:29 UTC4h 25m
2026-06-17 CSB405 SFO → CVG Jun 17, 02:55 UTCJun 17, 06:55 UTC4h 0m
2026-06-16 CSB805 CVG → SFO Jun 16, 10:55 UTCJun 16, 15:05 UTC4h 10m
2026-06-12 CSB2026 AUS → CVG Jun 12, 03:30 UTCJun 12, 05:35 UTC2h 5m
2026-06-11 CSB2025 - Jun 11, 10:00 UTCJun 11, 12:00 UTC2h 0m
2026-06-11 CSB2028 MEM → CVG Jun 11, 03:35 UTCJun 11, 05:30 UTC1h 55m
2026-06-10 CSB2029 CVG → MEM Jun 10, 10:25 UTCJun 10, 12:30 UTC2h 5m
2026-06-09 CSB107 HRL → CVG Jun 9, 01:55 UTCJun 9, 04:20 UTC2h 25m
2026-06-08 CSB507 CVG → HRL Jun 8, 04:50 UTCJun 8, 07:15 UTC2h 25m
2026-06-05 CSB199 MIA → CVG Jun 5, 15:25 UTCJun 5, 17:25 UTC2h 0m
2026-06-05 CSB599 CVG → MIA Jun 5, 08:05 UTCJun 5, 10:10 UTC2h 5m
2026-06-04 CSB405 SFO → CVG Jun 4, 20:30 UTCJun 5, 00:30 UTC4h 0m
2026-06-04 CSB405 SFO → CVG Jun 4, 03:10 UTCJun 4, 04:20 UTC1h 10m
2026-06-03 CSB805 CVG → SFO Jun 3, 11:35 UTCJun 3, 15:50 UTC4h 15m
2026-06-03 CSB405 SFO → CVG Jun 3, 03:05 UTCJun 3, 07:00 UTC3h 55m
2026-06-02 CSB805 CVG → SFO Jun 2, 10:45 UTCJun 2, 15:15 UTC4h 30m
2026-06-01 CSB1199 MIA → CVG Jun 1, 23:55 UTCJun 2, 02:05 UTC2h 10m
2026-05-31 CSB599 CVG → MIA May 31, 12:40 UTCMay 31, 13:20 UTC40m

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 N751CS page for operator, model, and routing details .

Mode-S AA1E03 frequently asked

What is Mode-S code AA1E03?
AA1E03 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N751CS.
Where is Mode-S AA1E03 registered?
Mode-S code AA1E03 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 AA1E03 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA1E03, octal 52417003, decimal 11,148,803.
What flights does AA1E03 operate?
Mode-S AA1E03 has broadcast 20 distinct callsigns, including CSB107, CSB507, CSB585, CSB185, CSB599.