Apparatus

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sensors Mode-S transponder

A2491B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2463S · CESSNA TR182 Turbo Skylane RG · operated by NJNJ AVIATION LLC

Hex
A2491B
Octal
50444433
Decimal
10,635,547
Country
US
Tail
N2463S
Type
C82T
No current signal · last broadcast 12d ago
Flights observed
103
Distinct callsigns
1
Country
US
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S A2491B.

Country allocation

The ICAO 24-bit address A2491B 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
N2463S - 103 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-05 N2463S - Jul 5, 19:30 UTCJul 5, 19:55 UTC25m
2026-07-05 N2463S - Jul 5, 19:00 UTCJul 5, 19:25 UTC25m
2026-07-03 N2463S SQL → SQL Jul 3, 20:55 UTCJul 3, 22:15 UTC1h 20m
2026-07-03 N2463S - Jul 3, 14:25 UTCJul 3, 15:45 UTC1h 20m
2026-07-02 N2463S - Jul 2, 19:40 UTCJul 2, 20:05 UTC25m
2026-07-02 N2463S - Jul 2, 18:10 UTCJul 2, 18:30 UTC20m
2026-06-30 N2463S - Jun 30, 21:55 UTCJun 30, 22:10 UTC15m
2026-06-30 N2463S - Jun 30, 18:35 UTCJun 30, 20:40 UTC2h 5m
2026-06-30 N2463S SQL → SQL Jun 30, 15:40 UTCJun 30, 17:00 UTC1h 20m
2026-06-24 N2463S SQL → SQL Jun 24, 19:15 UTCJun 24, 21:04 UTC1h 50m
2026-06-22 N2463S SQL → SQL Jun 22, 16:20 UTCJun 22, 16:29 UTC10m
2026-06-22 N2463S SQL → SQL Jun 22, 15:54 UTCJun 22, 16:10 UTC15m
2026-06-21 N2463S SMF → SQL Jun 21, 20:45 UTCJun 21, 21:34 UTC50m
2026-06-21 N2463S SQL → SMF Jun 21, 16:14 UTCJun 21, 17:05 UTC50m
2026-06-20 N2463S - Jun 20, 18:10 UTCJun 20, 19:24 UTC1h 15m
2026-06-20 N2463S - Jun 20, 00:39 UTCJun 20, 01:14 UTC35m
2026-06-19 N2463S - Jun 19, 17:09 UTCJun 19, 18:05 UTC55m
2026-06-19 N2463S - Jun 19, 01:15 UTCJun 19, 02:24 UTC1h 10m
2026-06-18 N2463S - Jun 18, 23:25 UTCJun 19, 00:20 UTC54m
2026-06-17 N2463S SQL → SQL Jun 17, 22:05 UTCJun 17, 23:15 UTC1h 10m
2026-06-17 N2463S SQL → SQL Jun 17, 16:50 UTCJun 17, 17:35 UTC45m
2026-06-16 N2463S SQL → SQL Jun 16, 16:00 UTCJun 16, 16:55 UTC55m
2026-06-15 N2463S SQL → SQL Jun 15, 19:10 UTCJun 15, 19:30 UTC20m
2026-06-15 N2463S SQL → SQL Jun 15, 18:29 UTCJun 15, 18:45 UTC15m
2026-06-14 N2463S - Jun 14, 20:10 UTCJun 14, 22:15 UTC2h 5m
2026-06-13 N2463S - Jun 13, 19:10 UTCJun 13, 20:50 UTC1h 40m
2026-06-13 N2463S - Jun 13, 17:05 UTCJun 13, 17:30 UTC25m
2026-06-12 N2463S - Jun 12, 18:50 UTCJun 12, 19:45 UTC55m
2026-06-12 N2463S - Jun 12, 15:40 UTCJun 12, 16:25 UTC45m
2026-06-11 N2463S SQL → SQL Jun 11, 15:00 UTCJun 11, 18:30 UTC3h 30m
2026-06-09 N2463S - Jun 9, 22:50 UTCJun 9, 23:25 UTC35m
2026-06-09 N2463S - Jun 9, 19:50 UTCJun 9, 20:25 UTC35m
2026-06-09 N2463S - Jun 9, 16:45 UTCJun 9, 19:05 UTC2h 20m
2026-06-07 N2463S - Jun 7, 19:55 UTCJun 7, 21:20 UTC1h 25m
2026-06-07 N2463S SQL → BZF Jun 7, 17:20 UTCJun 7, 19:10 UTC1h 50m
2026-06-06 N2463S - Jun 6, 21:25 UTCJun 6, 22:39 UTC1h 15m
2026-06-06 N2463S - Jun 6, 18:14 UTCJun 6, 19:10 UTC55m
2026-06-05 N2463S SQL → SQL Jun 5, 03:45 UTCJun 5, 05:05 UTC1h 20m
2026-06-01 N2463S SQL → SQL Jun 1, 19:05 UTCJun 1, 20:05 UTC1h 0m
2026-05-31 N2463S SQL → SQL May 31, 20:50 UTCMay 31, 21:30 UTC40m
2026-05-31 N2463S SQL → SQL May 31, 18:05 UTCMay 31, 19:10 UTC1h 5m
2026-05-30 N2463S SQL → SQL May 30, 23:00 UTCMay 31, 00:15 UTC1h 15m
2026-05-30 N2463S - May 30, 20:05 UTCMay 30, 21:15 UTC1h 10m
2026-05-30 N2463S - May 30, 18:20 UTCMay 30, 19:30 UTC1h 10m
2026-05-27 N2463S SQL → SQL May 27, 15:35 UTCMay 27, 17:00 UTC1h 25m
2026-05-27 N2463S VNY → SQL May 27, 00:30 UTCMay 27, 02:59 UTC2h 30m
2026-05-26 N2463S - May 26, 18:24 UTCMay 26, 21:04 UTC2h 40m
2026-05-26 N2463S - May 26, 17:04 UTCMay 26, 17:39 UTC35m
2026-05-24 N2463S - May 24, 21:35 UTCMay 24, 21:45 UTC10m
2026-05-24 N2463S SQL → MHR May 24, 18:20 UTCMay 24, 19:05 UTC45m

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 N2463S page for operator, model, and routing details .

Mode-S A2491B frequently asked

What is Mode-S code A2491B?
A2491B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2463S.
Where is Mode-S A2491B registered?
Mode-S code A2491B 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 A2491B broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2491B, octal 50444433, decimal 10,635,547.
What flights does A2491B operate?
Mode-S A2491B has broadcast 1 distinct callsign, including N2463S.