Apparatus

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sensors Mode-S transponder

484C51

ICAO 24-bit transponder address · allocated to Netherlands

Currently assigned to PH-EZM · EMBRAER ERJ-190-100

Hex
484C51
Octal
22046121
Decimal
4,738,129
Country
NL
Tail
PH-EZM
Type
E190
Broadcasting now · callsign KLM98C · 32,000 ft
Flights observed
301
Distinct callsigns
20
Country
NL
Last broadcast
31m ago

Current position

484C51 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 484C51 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 20 distinct

Callsign Airline Flights Last seen
KLM66B KLM Royal Dutch Airlines 11 2026-05-23
KLM43V KLM Royal Dutch Airlines 11 2026-05-23
KLM980 KLM Royal Dutch Airlines 8 2026-05-20
KLM21F KLM Royal Dutch Airlines 7 2026-05-20
KLM67N KLM Royal Dutch Airlines 5 2026-05-29
KLM98T KLM Royal Dutch Airlines 4 2026-05-25
KLM98C KLM Royal Dutch Airlines 4 2026-05-30
KLM87Q KLM Royal Dutch Airlines 4 2026-05-24
KLM86N KLM Royal Dutch Airlines 4 2026-04-25
KLM1660 KLM Royal Dutch Airlines 4 2026-05-11
KLM1131 KLM Royal Dutch Airlines 4 2026-05-16
KLM98Q KLM Royal Dutch Airlines 3 2026-05-26
KLM96U KLM Royal Dutch Airlines 3 2026-05-23
KLM92M KLM Royal Dutch Airlines 3 2026-05-16
KLM80N KLM Royal Dutch Airlines 3 2026-05-28
KLM60Q KLM Royal Dutch Airlines 3 2026-05-01
KLM60K KLM Royal Dutch Airlines 3 2026-05-02
KLM54V KLM Royal Dutch Airlines 3 2026-05-22
KLM50W KLM Royal Dutch Airlines 3 2026-05-21
KLM47X KLM Royal Dutch Airlines 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KLM98C TLS → AMS May 30, 04:10 UTCMay 30, 04:15 UTC5m
2026-05-29 KLM67N AMS → STR May 29, 19:55 UTCMay 29, 20:40 UTC45m
2026-05-29 KLM64H KRS → AMS May 29, 17:25 UTCMay 29, 18:30 UTC1h 5m
2026-05-29 KLM1187 AMS → BGO May 29, 15:35 UTCMay 29, 16:35 UTC1h 0m
2026-05-29 KLM40Q MUC → AMS May 29, 12:35 UTCMay 29, 13:45 UTC1h 10m
2026-05-29 KLM47X AMS → ZRH May 29, 10:30 UTCMay 29, 11:35 UTC1h 5m
2026-05-29 KLM48F MAN → AMS May 29, 08:20 UTCMay 29, 09:05 UTC45m
2026-05-29 KLM41N AMS → BLQ May 29, 06:15 UTCMay 29, 07:15 UTC1h 0m
2026-05-29 KLM98C TLS → AMS May 29, 04:15 UTCMay 29, 05:15 UTC1h 0m
2026-05-28 KLM67N AMS → STR May 28, 19:35 UTCMay 28, 20:30 UTC55m
2026-05-28 KLM98G LCY → AMS May 28, 16:20 UTCMay 28, 17:00 UTC40m
2026-05-28 KLM65J AMS → ZAG May 28, 14:55 UTCMay 28, 15:35 UTC40m
2026-05-28 KLM80N SVG → AMS May 28, 12:35 UTCMay 28, 13:45 UTC1h 10m
2026-05-28 KLM25C AMS → SVG May 28, 10:35 UTCMay 28, 11:40 UTC1h 5m
2026-05-28 KLM74A OSL → AMS May 28, 07:35 UTCMay 28, 09:05 UTC1h 30m
2026-05-28 KLM35J AMS → OSL May 28, 05:20 UTCMay 28, 06:45 UTC1h 25m
2026-05-27 KLM1754 BRE → AMS May 27, 10:20 UTCMay 27, 11:10 UTC50m
2026-05-27 KLM1753 AMS → BRE May 27, 08:30 UTCMay 27, 09:15 UTC45m
2026-05-26 KLM98Q HEL → AMS May 26, 12:30 UTCMay 26, 13:50 UTC1h 20m
2026-05-26 KLM27Z AMS → TRF May 26, 10:20 UTCMay 26, 11:39 UTC1h 20m
2026-05-26 KLM24J DUS → AMS May 26, 08:34 UTCMay 26, 09:19 UTC45m
2026-05-26 KLM57D TRD → AMS May 26, 06:39 UTCMay 26, 07:24 UTC45m
2026-05-26 KLM98C TLS → AMS May 26, 04:10 UTCMay 26, 05:10 UTC1h 0m
2026-05-25 KLM67N AMS → STR May 25, 19:44 UTCMay 25, 20:34 UTC50m
2026-05-25 KLM22X SOU → AMS May 25, 16:40 UTCMay 25, 17:25 UTC45m
2026-05-25 KLM23R AMS → SOU May 25, 15:05 UTCMay 25, 15:55 UTC50m
2026-05-25 KLM78M BSL → AMS May 25, 12:50 UTCMay 25, 13:50 UTC1h 0m
2026-05-25 KLM1945 AMS → BSL May 25, 11:00 UTCMay 25, 12:00 UTC1h 0m
2026-05-25 KLM68G BRE → AMS May 25, 09:25 UTCMay 25, 10:00 UTC35m
2026-05-25 KLM1761 AMS → BRE May 25, 08:00 UTCMay 25, 08:35 UTC35m
2026-05-25 KLM98T BIO → AMS May 25, 05:05 UTCMay 25, 06:45 UTC1h 40m
2026-05-24 KLM87Q AMS → BIO May 24, 18:55 UTCMay 24, 20:30 UTC1h 35m
2026-05-24 KLM76M ORK → AMS May 24, 16:15 UTCMay 24, 17:30 UTC1h 15m
2026-05-24 KLM37J AMS → BCN May 24, 14:00 UTCMay 24, 15:05 UTC1h 5m
2026-05-23 KLM96U NUE → AMS May 23, 17:10 UTCMay 23, 18:10 UTC1h 0m
2026-05-23 KLM35U AMS → NUE May 23, 15:10 UTCMay 23, 16:05 UTC55m
2026-05-23 KLM66B GOT → AMS May 23, 12:35 UTCMay 23, 14:10 UTC1h 35m
2026-05-23 KLM43V AMS → LJU May 23, 10:15 UTCMay 23, 11:40 UTC1h 25m
2026-05-23 KLM1828 STR → AMS May 23, 08:15 UTCMay 23, 09:10 UTC55m
2026-05-23 KLM1827 AMS → STR May 23, 06:10 UTCMay 23, 07:05 UTC55m
2026-05-23 KLM98C TLS → AMS May 23, 04:15 UTCMay 23, 05:05 UTC50m
2026-05-22 KLM67N AMS → STR May 22, 19:45 UTCMay 22, 20:30 UTC45m
2026-05-22 KLM96U NUE → AMS May 22, 16:25 UTCMay 22, 17:20 UTC55m
2026-05-22 KLM35U AMS → NUE May 22, 14:45 UTCMay 22, 15:30 UTC45m
2026-05-22 KLM40Q MUC → AMS May 22, 12:20 UTCMay 22, 13:20 UTC1h 0m
2026-05-22 KLM47X AMS → ZRH May 22, 10:25 UTCMay 22, 11:35 UTC1h 10m
2026-05-22 KLM982 LCY → AMS May 22, 08:40 UTCMay 22, 09:20 UTC40m
2026-05-22 KLM47M AMS → LCY May 22, 07:00 UTCMay 22, 07:45 UTC45m
2026-05-22 KLM54V KRS → AMS May 22, 04:40 UTCMay 22, 05:50 UTC1h 10m
2026-05-21 KLM1189 AMS → BGO May 21, 19:50 UTCMay 21, 20:55 UTC1h 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 PH-EZM page for operator, model, and routing details .

Mode-S 484C51 frequently asked

What is Mode-S code 484C51?
484C51 is an ICAO 24-bit transponder address. Allocated to Netherlands. Assigned to PH-EZM.
Where is Mode-S 484C51 registered?
Mode-S code 484C51 is allocated to Netherlands (NL). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 484C51 broadcasting right now?
Yes. Mode-S 484C51 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 484C51, octal 22046121, decimal 4,738,129.
What flights does 484C51 operate?
Mode-S 484C51 has broadcast 20 distinct callsigns, including KLM66B, KLM43V, KLM980, KLM21F, KLM67N.