Apparatus

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sensors Mode-S transponder

4598C7

ICAO 24-bit transponder address · allocated to Denmark

Currently assigned to OY-FFG · TECNAM P-2002 Sierra

Hex
4598C7
Octal
21314307
Decimal
4,561,095
Country
DK
Tail
OY-FFG
Type
SIRA
No current signal · last broadcast 11h ago
Flights observed
99
Distinct callsigns
1
Country
DK
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 4598C7.

Country allocation

The ICAO 24-bit address 4598C7 falls within the block assigned to Denmark (DK) by ICAO Annex 10, Volume III. Every aircraft registered in Denmark 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
OYFFG - 99 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 OYFFG - May 29, 17:35 UTCMay 29, 18:40 UTC1h 5m
2026-05-29 OYFFG RKE → RKE May 29, 15:15 UTCMay 29, 16:20 UTC1h 6m
2026-05-29 OYFFG RKE → RKE May 29, 10:00 UTCMay 29, 11:05 UTC1h 5m
2026-05-29 OYFFG - May 29, 07:40 UTCMay 29, 09:00 UTC1h 20m
2026-05-28 OYFFG - May 28, 12:35 UTCMay 28, 13:40 UTC1h 5m
2026-05-28 OYFFG RKE → RKE May 28, 07:15 UTCMay 28, 08:00 UTC45m
2026-05-27 OYFFG RKE → RKE May 27, 15:05 UTCMay 27, 16:00 UTC55m
2026-05-27 OYFFG RKE → RKE May 27, 12:50 UTCMay 27, 13:45 UTC55m
2026-05-27 OYFFG RKE → RKE May 27, 09:45 UTCMay 27, 11:05 UTC1h 20m
2026-05-27 OYFFG - May 27, 07:45 UTCMay 27, 09:00 UTC1h 15m
2026-05-26 OYFFG - May 26, 16:10 UTCMay 26, 17:30 UTC1h 20m
2026-05-26 OYFFG RKE → RKE May 26, 13:19 UTCMay 26, 14:30 UTC1h 10m
2026-05-26 OYFFG RKE → RKE May 26, 08:19 UTCMay 26, 11:44 UTC3h 25m
2026-05-24 OYFFG - May 24, 10:10 UTCMay 24, 11:55 UTC1h 45m
2026-05-22 OYFFG RKE → RKE May 22, 14:45 UTCMay 22, 16:00 UTC1h 15m
2026-05-22 OYFFG RKE → RKE May 22, 12:05 UTCMay 22, 12:50 UTC45m
2026-05-21 OYFFG - May 21, 11:10 UTCMay 21, 12:00 UTC50m
2026-05-21 OYFFG RKE → RKE May 21, 07:20 UTCMay 21, 08:35 UTC1h 15m
2026-05-20 OYFFG RKE → RKE May 20, 14:25 UTCMay 20, 14:45 UTC20m
2026-05-20 OYFFG RKE → RKE May 20, 08:15 UTCMay 20, 09:15 UTC1h 0m
2026-05-19 OYFFG RKE → RKE May 19, 15:05 UTCMay 19, 16:30 UTC1h 25m
2026-05-19 OYFFG - May 19, 12:40 UTCMay 19, 14:05 UTC1h 25m
2026-05-19 OYFFG - May 19, 07:30 UTCMay 19, 08:55 UTC1h 25m
2026-05-18 OYFFG - May 18, 15:30 UTCMay 18, 16:40 UTC1h 10m
2026-05-18 OYFFG - May 18, 12:30 UTCMay 18, 13:35 UTC1h 5m
2026-05-18 OYFFG - May 18, 06:35 UTCMay 18, 07:45 UTC1h 10m
2026-05-17 OYFFG - May 17, 13:35 UTCMay 17, 14:40 UTC1h 5m
2026-05-17 OYFFG RKE → RKE May 17, 08:10 UTCMay 17, 09:30 UTC1h 20m
2026-05-16 OYFFG RKE → RKE May 16, 09:16 UTCMay 16, 10:25 UTC1h 10m
2026-05-16 OYFFG RKE → RKE May 16, 07:11 UTCMay 16, 08:26 UTC1h 15m
2026-05-15 OYFFG - May 15, 12:30 UTCMay 15, 13:45 UTC1h 15m
2026-05-15 OYFFG - May 15, 10:10 UTCMay 15, 11:25 UTC1h 15m
2026-05-15 OYFFG - May 15, 07:40 UTCMay 15, 08:45 UTC1h 5m
2026-05-12 OYFFG - May 12, 09:05 UTCMay 12, 10:05 UTC1h 0m
2026-05-11 OYFFG RKE → RKE May 11, 15:25 UTCMay 11, 16:20 UTC55m
2026-05-11 OYFFG RKE → RKE May 11, 09:40 UTCMay 11, 10:40 UTC1h 0m
2026-05-11 OYFFG - May 11, 07:15 UTCMay 11, 08:20 UTC1h 5m
2026-05-09 OYFFG - May 9, 14:15 UTCMay 9, 15:00 UTC45m
2026-05-09 OYFFG - May 9, 10:15 UTCMay 9, 11:35 UTC1h 20m
2026-05-09 OYFFG - May 9, 08:00 UTCMay 9, 09:30 UTC1h 30m
2026-05-08 OYFFG - May 8, 10:44 UTCMay 8, 12:10 UTC1h 25m
2026-05-08 OYFFG - May 8, 08:55 UTCMay 8, 09:30 UTC35m
2026-05-08 OYFFG - May 8, 07:04 UTCMay 8, 08:09 UTC1h 5m
2026-05-07 OYFFG RKE → RKE May 7, 14:05 UTCMay 7, 14:55 UTC50m
2026-05-07 OYFFG RKE → RKE May 7, 12:15 UTCMay 7, 13:05 UTC50m
2026-05-07 OYFFG RKE → RKE May 7, 09:55 UTCMay 7, 10:50 UTC55m
2026-05-07 OYFFG RKE → RKE May 7, 07:45 UTCMay 7, 08:40 UTC55m
2026-05-06 OYFFG RKE → RKE May 6, 12:01 UTCMay 6, 13:05 UTC1h 5m
2026-05-06 OYFFG RKE → RKE May 6, 08:50 UTCMay 6, 09:55 UTC1h 5m
2026-05-05 OYFFG - May 5, 18:15 UTCMay 5, 19:50 UTC1h 35m

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 OY-FFG page for operator, model, and routing details .

Mode-S 4598C7 frequently asked

What is Mode-S code 4598C7?
4598C7 is an ICAO 24-bit transponder address. Allocated to Denmark. Assigned to OY-FFG.
Where is Mode-S 4598C7 registered?
Mode-S code 4598C7 is allocated to Denmark (DK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4598C7 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4598C7, octal 21314307, decimal 4,561,095.
What flights does 4598C7 operate?
Mode-S 4598C7 has broadcast 1 distinct callsign, including OYFFG.