Apparatus

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sensors Mode-S transponder

A1BBE5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2100L · BOMBARDIER BD-700 Global 6000/6500 · operated by LASAI AVIATION II LLC, US ARMY

Hex
A1BBE5
Octal
50335745
Decimal
10,599,397
Country
US
Tail
N2100L
Type
GLEX
Broadcasting now · callsign AXEL21 · 26,975 ft
Flights observed
193
Distinct callsigns
1
Country
US
Last broadcast
Jul 24, 18:00 UTC

Current position

A1BBE5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1BBE5 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 1 distinct

Callsign Airline Flights Last seen
AXEL21 - 193 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 AXEL21 - Jul 23, 23:45 UTCJul 24, 17:55 UTC18h 10m
2026-07-23 AXEL21 - Jul 23, 16:25 UTCJul 23, 23:25 UTC7h 0m
2026-07-23 AXEL21 - Jul 23, 15:00 UTCJul 23, 15:55 UTC55m
2026-07-22 AXEL21 - Jul 22, 17:35 UTCJul 23, 15:55 UTC22h 20m
2026-07-22 AXEL21 - Jul 22, 14:55 UTCJul 22, 17:15 UTC2h 20m
2026-07-22 AXEL21 - Jul 22, 00:40 UTCJul 22, 02:40 UTC2h 0m
2026-07-21 AXEL21 - Jul 21, 22:00 UTCJul 22, 00:25 UTC2h 25m
2026-07-21 AXEL21 - Jul 21, 19:40 UTCJul 21, 20:10 UTC30m
2026-07-21 AXEL21 - Jul 21, 17:50 UTCJul 21, 18:50 UTC1h 0m
2026-07-21 AXEL21 - Jul 21, 16:20 UTCJul 21, 17:15 UTC55m
2026-07-21 AXEL21 - Jul 21, 14:35 UTCJul 21, 15:05 UTC30m
2026-07-21 AXEL21 - Jul 21, 02:55 UTCJul 21, 03:05 UTC10m
2026-07-21 AXEL21 - Jul 21, 00:40 UTCJul 21, 02:20 UTC1h 40m
2026-07-20 AXEL21 - Jul 20, 22:20 UTCJul 21, 00:25 UTC2h 4m
2026-07-20 AXEL21 - Jul 20, 14:40 UTCJul 20, 20:20 UTC5h 40m
2026-07-18 AXEL21 - Jul 18, 20:30 UTCJul 18, 21:25 UTC55m
2026-07-18 AXEL21 - Jul 18, 18:40 UTCJul 18, 19:50 UTC1h 10m
2026-07-18 AXEL21 - Jul 18, 16:50 UTCJul 18, 17:40 UTC50m
2026-07-17 AXEL21 - Jul 17, 15:20 UTCJul 17, 18:15 UTC2h 55m
2026-07-17 AXEL21 - Jul 17, 01:45 UTCJul 17, 03:59 UTC2h 15m
2026-07-16 AXEL21 - Jul 16, 18:00 UTCJul 17, 01:09 UTC7h 10m
2026-07-16 AXEL21 - Jul 16, 15:00 UTCJul 16, 17:10 UTC2h 10m
2026-07-15 AXEL21 - Jul 15, 17:35 UTCJul 16, 04:30 UTC10h 55m
2026-07-15 AXEL21 - Jul 15, 14:35 UTCJul 15, 16:55 UTC2h 20m
2026-07-14 AXEL21 - Jul 14, 23:55 UTCJul 15, 03:20 UTC3h 25m
2026-07-14 AXEL21 - Jul 14, 22:20 UTCJul 14, 22:50 UTC29m
2026-07-14 AXEL21 - Jul 14, 15:10 UTCJul 14, 20:15 UTC5h 5m
2026-07-14 AXEL21 - Jul 14, 01:15 UTCJul 14, 03:40 UTC2h 25m
2026-07-13 AXEL21 - Jul 13, 15:05 UTCJul 14, 00:30 UTC9h 25m
2026-07-10 AXEL21 - Jul 10, 23:20 UTCJul 11, 19:30 UTC20h 10m
2026-07-10 AXEL21 - Jul 10, 22:15 UTCJul 11, 19:30 UTC21h 15m
2026-07-10 AXEL21 - Jul 10, 19:20 UTCJul 11, 19:15 UTC23h 55m
2026-07-10 AXEL21 - Jul 10, 17:40 UTCJul 11, 17:15 UTC23h 35m
2026-07-10 AXEL21 - Jul 10, 14:55 UTCJul 10, 17:00 UTC2h 5m
2026-07-10 AXEL21 - Jul 10, 01:30 UTCJul 10, 03:20 UTC1h 50m
2026-07-09 AXEL21 - Jul 9, 22:45 UTCJul 10, 00:55 UTC2h 10m
2026-07-09 AXEL21 - Jul 9, 19:30 UTCJul 9, 20:05 UTC35m
2026-07-09 AXEL21 - Jul 9, 14:35 UTCJul 9, 18:50 UTC4h 15m
2026-07-08 AXEL21 - Jul 8, 22:50 UTCJul 9, 04:55 UTC6h 5m
2026-07-08 AXEL21 - Jul 8, 14:40 UTCJul 8, 20:40 UTC6h 0m
2026-07-07 AXEL21 - Jul 7, 22:40 UTCJul 8, 03:45 UTC5h 5m
2026-07-07 AXEL21 - Jul 7, 17:10 UTCJul 7, 20:15 UTC3h 5m
2026-07-07 AXEL21 - Jul 7, 03:00 UTCJul 7, 03:15 UTC15m
2026-07-07 AXEL21 - Jul 7, 00:35 UTCJul 7, 02:15 UTC1h 40m
2026-07-06 AXEL21 - Jul 6, 21:55 UTCJul 7, 00:15 UTC2h 20m
2026-06-30 AXEL21 - Jun 30, 22:00 UTCJun 30, 22:25 UTC25m
2026-06-30 AXEL21 - Jun 30, 17:50 UTCJun 30, 20:25 UTC2h 35m
2026-06-30 AXEL21 - Jun 30, 14:30 UTCJun 30, 17:30 UTC3h 0m
2026-06-29 AXEL21 - Jun 29, 14:34 UTCJun 29, 20:09 UTC5h 35m
2026-06-27 AXEL21 - Jun 27, 19:34 UTCJun 27, 20:39 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 N2100L page for operator, model, and routing details .

Mode-S A1BBE5 frequently asked

What is Mode-S code A1BBE5?
A1BBE5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2100L.
Where is Mode-S A1BBE5 registered?
Mode-S code A1BBE5 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 A1BBE5 broadcasting right now?
Yes. Mode-S A1BBE5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1BBE5, octal 50335745, decimal 10,599,397.
What flights does A1BBE5 operate?
Mode-S A1BBE5 has broadcast 1 distinct callsign, including AXEL21.