Apparatus

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sensors Mode-S transponder

A6B4AC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N531FL · DASSAULT Falcon 200 · operated by IFL GROUP INC

Hex
A6B4AC
Octal
51532254
Decimal
10,925,228
Country
US
Tail
N531FL
Type
FA20
No current signal · last broadcast 6d ago
Flights observed
121
Distinct callsigns
1
Country
US
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S A6B4AC.

Country allocation

The ICAO 24-bit address A6B4AC 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
IFL531 - 121 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 IFL531 - Jul 24, 08:35 UTCJul 24, 10:35 UTC2h 0m
2026-07-24 IFL531 - Jul 24, 06:00 UTCJul 24, 07:25 UTC1h 25m
2026-07-22 IFL531 - Jul 22, 01:55 UTCJul 22, 03:25 UTC1h 30m
2026-07-21 IFL531 - Jul 21, 21:35 UTCJul 22, 00:15 UTC2h 40m
2026-07-21 IFL531 - Jul 21, 18:45 UTCJul 21, 19:20 UTC35m
2026-07-21 IFL531 - Jul 21, 02:50 UTCJul 21, 03:20 UTC30m
2026-07-18 IFL531 - Jul 18, 00:19 UTCJul 18, 02:50 UTC2h 31m
2026-07-17 IFL531 - Jul 17, 21:15 UTCJul 17, 21:34 UTC20m
2026-07-17 IFL531 - Jul 17, 10:40 UTCJul 17, 12:15 UTC1h 35m
2026-07-17 IFL531 - Jul 17, 06:20 UTCJul 17, 09:25 UTC3h 5m
2026-07-17 IFL531 - Jul 17, 04:04 UTCJul 17, 04:59 UTC55m
2026-07-15 IFL531 - Jul 15, 01:55 UTCJul 15, 03:20 UTC1h 25m
2026-07-14 IFL531 - Jul 14, 23:40 UTCJul 15, 01:10 UTC1h 30m
2026-07-04 IFL531 - Jul 4, 13:30 UTCJul 4, 14:05 UTC35m
2026-07-04 IFL531 - Jul 4, 09:20 UTCJul 4, 10:00 UTC40m
2026-07-01 IFL531 - Jul 1, 05:05 UTCJul 1, 06:40 UTC1h 35m
2026-07-01 IFL531 - Jul 1, 02:00 UTCJul 1, 03:40 UTC1h 40m
2026-06-30 IFL531 LRD → LRD Jun 30, 21:25 UTCJul 1, 01:05 UTC3h 40m
2026-06-28 IFL531 - Jun 28, 14:09 UTCJun 28, 16:29 UTC2h 20m
2026-06-28 IFL531 - Jun 28, 10:24 UTCJun 28, 12:50 UTC2h 25m
2026-06-28 IFL531 - Jun 28, 06:15 UTCJun 28, 09:10 UTC2h 55m
2026-06-27 IFL531 - Jun 27, 04:15 UTCJun 27, 06:59 UTC2h 45m
2026-06-26 IFL531 - Jun 26, 06:25 UTCJun 26, 08:24 UTC2h 0m
2026-06-26 IFL531 LRD → MQY Jun 26, 03:29 UTCJun 26, 05:30 UTC2h 0m
2026-06-25 IFL531 LRD → LRD Jun 25, 19:05 UTCJun 26, 02:34 UTC7h 30m
2026-06-24 IFL531 - Jun 24, 23:34 UTCJun 25, 01:40 UTC2h 5m
2026-06-24 IFL531 - Jun 24, 20:14 UTCJun 24, 22:25 UTC2h 10m
2026-06-24 IFL531 - Jun 24, 04:30 UTCJun 24, 04:59 UTC30m
2026-06-24 IFL531 - Jun 24, 02:20 UTCJun 24, 03:55 UTC1h 35m
2026-06-24 IFL531 - Jun 24, 00:09 UTCJun 24, 00:49 UTC40m
2026-06-23 IFL531 - Jun 23, 20:40 UTCJun 23, 23:05 UTC2h 25m
2026-06-22 IFL531 - Jun 22, 00:29 UTCJun 22, 04:00 UTC3h 30m
2026-06-21 IFL531 - Jun 21, 20:24 UTCJun 21, 22:54 UTC2h 30m
2026-06-21 IFL531 - Jun 21, 18:20 UTCJun 21, 19:09 UTC50m
2026-06-20 IFL531 - Jun 20, 10:15 UTCJun 20, 12:59 UTC2h 45m
2026-06-20 IFL531 - Jun 20, 06:14 UTCJun 20, 09:09 UTC2h 55m
2026-06-20 IFL531 - Jun 20, 03:49 UTCJun 20, 04:59 UTC1h 10m
2026-06-18 IFL531 - Jun 18, 11:55 UTCJun 18, 15:35 UTC3h 40m
2026-06-18 IFL531 - Jun 18, 07:40 UTCJun 18, 10:40 UTC3h 0m
2026-06-18 IFL531 - Jun 18, 03:00 UTCJun 18, 06:20 UTC3h 20m
2026-06-17 IFL531 LRD → PTK Jun 17, 04:25 UTCJun 17, 07:10 UTC2h 45m
2026-06-16 IFL531 - Jun 16, 23:45 UTCJun 17, 02:45 UTC3h 0m
2026-06-10 IFL531 - Jun 10, 00:50 UTCJun 10, 02:10 UTC1h 20m
2026-06-09 IFL531 - Jun 9, 21:15 UTCJun 9, 22:45 UTC1h 30m
2026-06-09 IFL531 - Jun 9, 07:10 UTCJun 9, 07:55 UTC45m
2026-06-09 IFL531 - Jun 9, 05:40 UTCJun 9, 06:30 UTC50m
2026-06-05 IFL531 - Jun 5, 16:05 UTCJun 5, 17:25 UTC1h 20m
2026-06-05 IFL531 - Jun 5, 13:25 UTCJun 5, 14:55 UTC1h 30m
2026-06-05 IFL531 LRD → PTK Jun 5, 05:00 UTCJun 5, 07:45 UTC2h 45m
2026-06-05 IFL531 - Jun 5, 00:10 UTCJun 5, 03:15 UTC3h 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 N531FL page for operator, model, and routing details .

Mode-S A6B4AC frequently asked

What is Mode-S code A6B4AC?
A6B4AC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N531FL.
Where is Mode-S A6B4AC registered?
Mode-S code A6B4AC 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 A6B4AC broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6B4AC, octal 51532254, decimal 10,925,228.
What flights does A6B4AC operate?
Mode-S A6B4AC has broadcast 1 distinct callsign, including IFL531.