Apparatus

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sensors Mode-S transponder

484BAC

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-EUA · AGUSTA AW-139

Hex
484BAC
Octal
22045654
Decimal
4,737,964
Country
NL
Tail
PH-EUA
Type
A139
No current signal · last broadcast 13h ago
Flights observed
9
Distinct callsigns
4
Country
NL
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 484BAC.

Country allocation

The ICAO 24-bit address 484BAC falls within the block assigned to Netherlands (NL) by ICAO Annex 10, Volume III. Every aircraft registered in Netherlands 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 4 distinct

Callsign Airline Flights Last seen
HNL03A - 4 2026-04-14
HNL23A - 2 2026-04-13
HNL03B - 2 2026-04-13
HNL50A - 1 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 HNL50A - Apr 14, 09:55 UTCApr 14, 10:10 UTC15m
2026-04-14 HNL03A - Apr 14, 07:10 UTCApr 14, 07:35 UTC25m
2026-04-14 HNL03A - Apr 14, 05:45 UTCApr 14, 06:10 UTC25m
2026-04-13 HNL03B - Apr 13, 16:40 UTCApr 13, 17:00 UTC20m
2026-04-13 HNL03B - Apr 13, 15:10 UTCApr 13, 15:30 UTC20m
2026-04-13 HNL23A - Apr 13, 11:05 UTCApr 13, 11:25 UTC20m
2026-04-13 HNL23A - Apr 13, 08:35 UTCApr 13, 08:55 UTC20m
2026-04-13 HNL03A - Apr 13, 07:00 UTCApr 13, 07:20 UTC20m
2026-04-13 HNL03A - Apr 13, 05:30 UTCApr 13, 06:05 UTC35m

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 PH-EUA page for operator, model, and routing details .

Mode-S 484BAC frequently asked

What is Mode-S code 484BAC?
484BAC is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-EUA.
Where is Mode-S 484BAC registered?
Mode-S code 484BAC is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 484BAC broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 484BAC, octal 22045654, decimal 4,737,964.
What flights does 484BAC operate?
Mode-S 484BAC has broadcast 4 distinct callsigns, including HNL03A, HNL23A, HNL03B, HNL50A.