Apparatus

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sensors Mode-S transponder

A54B36

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N440GC · VANS RV-6 · operated by KAUFMANN BRYAN

Hex
A54B36
Octal
51245466
Decimal
10,832,694
Country
US
Tail
N440GC
Type
RV6
Broadcasting now · callsign N440GC · 8,300 ft
Flights observed
23
Distinct callsigns
1
Country
US
Last broadcast
3h ago

Current position

A54B36 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A54B36 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
N440GC - 23 2026-07-14

Recent flights last 23

DateFlightRouteTakeoffLandingDuration
2026-07-14 N440GC - Jul 14, 13:55 UTCJul 14, 15:25 UTC1h 30m
2026-07-14 N440GC - Jul 14, 00:30 UTCJul 14, 00:50 UTC20m
2026-07-13 N440GC - Jul 13, 23:35 UTCJul 13, 23:50 UTC15m
2026-07-11 N440GC - Jul 11, 18:05 UTCJul 11, 18:25 UTC20m
2026-07-11 N440GC - Jul 11, 17:05 UTCJul 11, 17:25 UTC20m
2026-07-11 N440GC - Jul 11, 16:15 UTCJul 11, 16:35 UTC20m
2026-07-11 N440GC - Jul 11, 15:25 UTCJul 11, 15:40 UTC15m
2026-07-11 N440GC - Jul 11, 14:35 UTCJul 11, 14:50 UTC15m
2026-07-07 N440GC - Jul 7, 00:50 UTCJul 7, 01:45 UTC55m
2026-07-03 N440GC - Jul 3, 01:35 UTCJul 3, 02:35 UTC1h 0m
2026-06-22 N440GC - Jun 22, 23:24 UTCJun 23, 01:15 UTC1h 50m
2026-06-21 N440GC - Jun 21, 16:54 UTCJun 21, 18:14 UTC1h 20m
2026-06-21 N440GC - Jun 21, 14:54 UTCJun 21, 15:59 UTC1h 5m
2026-06-21 N440GC - Jun 21, 14:10 UTCJun 21, 14:24 UTC15m
2026-06-20 N440GC - Jun 20, 17:34 UTCJun 20, 17:59 UTC25m
2026-06-20 N440GC - Jun 20, 16:44 UTCJun 20, 16:59 UTC15m
2026-06-20 N440GC - Jun 20, 15:44 UTCJun 20, 16:05 UTC20m
2026-06-20 N440GC - Jun 20, 14:54 UTCJun 20, 15:09 UTC15m
2026-06-20 N440GC - Jun 20, 13:49 UTCJun 20, 13:59 UTC10m
2026-06-03 N440GC - Jun 3, 00:25 UTCJun 3, 00:35 UTC10m
2026-05-24 N440GC - May 24, 01:00 UTCMay 24, 01:30 UTC30m
2026-05-21 N440GC - May 21, 23:55 UTCMay 22, 00:10 UTC15m
2026-05-17 N440GC - May 17, 01:30 UTCMay 17, 01:45 UTC15m

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 N440GC page for operator, model, and routing details .

Mode-S A54B36 frequently asked

What is Mode-S code A54B36?
A54B36 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N440GC.
Where is Mode-S A54B36 registered?
Mode-S code A54B36 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 A54B36 broadcasting right now?
Yes. Mode-S A54B36 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A54B36, octal 51245466, decimal 10,832,694.
What flights does A54B36 operate?
Mode-S A54B36 has broadcast 1 distinct callsign, including N440GC.