sensors Mode-S transponder

4D028C

ICAO 24-bit transponder address · allocated to Luxembourg

Currently assigned to LX-HHO · AIRBUS HELICOPTERS EC-145

Hex
4D028C
Octal
23201214
Decimal
5,046,924
Country
LU
Tail
LX-HHO
Type
EC45
No current signal · last broadcast 1d ago
Flights observed
46
Distinct callsigns
3
Country
LU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4D028C.

Country allocation

The ICAO 24-bit address 4D028C falls within the block assigned to Luxembourg (LU) by ICAO Annex 10, Volume III. Every aircraft registered in Luxembourg 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 3 distinct

Callsign Airline Flights Last seen
AIRESC3 - 39 2026-05-28
AIRRESC3 - 5 2026-05-27
LXHHO - 2 2026-05-24

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-05-28 AIRESC3 - May 28, 17:00 UTCMay 28, 17:10 UTC10m
2026-05-27 AIRRESC3 - May 27, 18:30 UTCMay 27, 18:45 UTC15m
2026-05-27 AIRRESC3 - May 27, 16:35 UTCMay 27, 16:45 UTC10m
2026-05-27 AIRRESC3 - May 27, 13:35 UTCMay 27, 14:15 UTC40m
2026-05-27 AIRRESC3 - May 27, 11:35 UTCMay 27, 11:50 UTC15m
2026-05-27 AIRRESC3 - May 27, 10:05 UTCMay 27, 10:40 UTC35m
2026-05-24 LXHHO FKB → LUX May 24, 12:15 UTCMay 24, 13:20 UTC1h 5m
2026-04-23 LXHHO - Apr 23, 07:25 UTCApr 23, 08:30 UTC1h 5m
2026-04-22 AIRESC3 - Apr 22, 12:05 UTCApr 22, 12:15 UTC10m
2026-04-22 AIRESC3 - Apr 22, 11:25 UTCApr 22, 11:35 UTC10m
2026-04-22 AIRESC3 - Apr 22, 10:30 UTCApr 22, 10:45 UTC15m
2026-04-21 AIRESC3 - Apr 21, 17:10 UTCApr 21, 17:55 UTC45m
2026-04-21 AIRESC3 - Apr 21, 07:20 UTCApr 21, 08:00 UTC40m
2026-04-20 AIRESC3 - Apr 20, 18:40 UTCApr 20, 18:50 UTC10m
2026-04-20 AIRESC3 - Apr 20, 17:55 UTCApr 20, 18:05 UTC10m
2026-04-20 AIRESC3 - Apr 20, 17:05 UTCApr 20, 17:15 UTC10m
2026-04-20 AIRESC3 - Apr 20, 07:35 UTCApr 20, 07:45 UTC10m
2026-04-20 AIRESC3 - Apr 20, 06:40 UTCApr 20, 06:50 UTC10m
2026-04-19 AIRESC3 - Apr 19, 16:35 UTCApr 19, 16:50 UTC15m
2026-04-19 AIRESC3 - Apr 19, 11:55 UTCApr 19, 12:05 UTC10m
2026-04-19 AIRESC3 - Apr 19, 10:10 UTCApr 19, 10:25 UTC15m
2026-04-19 AIRESC3 - Apr 19, 09:20 UTCApr 19, 09:35 UTC15m
2026-04-18 AIRESC3 - Apr 18, 18:30 UTCApr 18, 19:20 UTC50m
2026-04-18 AIRESC3 - Apr 18, 15:35 UTCApr 18, 15:45 UTC10m
2026-04-18 AIRESC3 - Apr 18, 12:45 UTCApr 18, 12:55 UTC10m
2026-04-18 AIRESC3 - Apr 18, 07:25 UTCApr 18, 07:35 UTC10m
2026-04-17 AIRESC3 - Apr 17, 15:05 UTCApr 17, 15:15 UTC10m
2026-04-17 AIRESC3 - Apr 17, 13:30 UTCApr 17, 13:40 UTC10m
2026-04-17 AIRESC3 - Apr 17, 09:20 UTCApr 17, 09:50 UTC30m
2026-04-17 AIRESC3 - Apr 17, 06:00 UTCApr 17, 06:15 UTC15m
2026-04-16 AIRESC3 - Apr 16, 18:40 UTCApr 16, 19:10 UTC30m
2026-04-16 AIRESC3 - Apr 16, 17:15 UTCApr 16, 18:05 UTC50m
2026-04-16 AIRESC3 - Apr 16, 16:30 UTCApr 16, 16:45 UTC15m
2026-04-16 AIRESC3 - Apr 16, 13:50 UTCApr 16, 14:20 UTC30m
2026-04-16 AIRESC3 - Apr 16, 12:05 UTCApr 16, 12:49 UTC45m
2026-04-16 AIRESC3 - Apr 16, 09:45 UTCApr 16, 10:49 UTC1h 5m
2026-04-15 AIRESC3 - Apr 15, 13:50 UTCApr 15, 14:50 UTC59m
2026-04-15 AIRESC3 - Apr 15, 11:55 UTCApr 15, 12:05 UTC10m
2026-04-14 AIRESC3 - Apr 14, 16:35 UTCApr 14, 16:45 UTC10m
2026-04-14 AIRESC3 - Apr 14, 15:40 UTCApr 14, 16:15 UTC35m
2026-04-14 AIRESC3 - Apr 14, 13:45 UTCApr 14, 13:55 UTC10m
2026-04-14 AIRESC3 - Apr 14, 09:35 UTCApr 14, 09:45 UTC10m
2026-04-14 AIRESC3 - Apr 14, 08:50 UTCApr 14, 09:00 UTC10m
2026-04-13 AIRESC3 - Apr 13, 14:30 UTCApr 13, 14:40 UTC10m
2026-04-13 AIRESC3 - Apr 13, 13:50 UTCApr 13, 14:00 UTC10m
2026-04-13 AIRESC3 - Apr 13, 11:55 UTCApr 13, 12:05 UTC10m

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 LX-HHO page for operator, model, and routing details .

Mode-S 4D028C frequently asked

What is Mode-S code 4D028C?
4D028C is an ICAO 24-bit transponder address. Allocated to Luxembourg. Assigned to LX-HHO.
Where is Mode-S 4D028C registered?
Mode-S code 4D028C is allocated to Luxembourg (LU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D028C broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D028C, octal 23201214, decimal 5,046,924.
What flights does 4D028C operate?
Mode-S 4D028C has broadcast 3 distinct callsigns, including AIRESC3, AIRRESC3, LXHHO.