Apparatus

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sensors Mode-S transponder

4ACA0C

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RPL · BOEING 737-800

Hex
4ACA0C
Octal
22545014
Decimal
4,901,388
Country
SE
Tail
SE-RPL
Type
B738
Broadcasting now · callsign NSZ75Z · 37,000 ft
Flights observed
469
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 22:10 UTC

Current position

4ACA0C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA0C falls within the block assigned to Sweden (SE) by ICAO Annex 10, Volume III. Every aircraft registered in Sweden 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
NSZ6FY - 7 2026-06-29
NSZ5GT - 7 2026-06-29
NSZ3228 - 7 2026-07-10
NSZ3302 Norwegian Air Sweden AOC 6 2026-06-02
NSZ3229 Norwegian Air Sweden AOC 6 2026-06-09
NSZ3095 Norwegian Air Sweden AOC 6 2026-06-09
NSZ6PY Norwegian Air Sweden AOC 5 2026-07-26
NSZ3303 Norwegian Air Sweden AOC 5 2026-06-02
NSZ1KS Norwegian Air Sweden AOC 5 2026-07-26
NSZ9RA Norwegian Air Sweden AOC 4 2026-06-05
NSZ9GY Norwegian Air Sweden AOC 4 2026-07-26
NSZ92L Norwegian Air Sweden AOC 4 2026-07-23
NSZ8HW - 4 2026-06-30
NSZ8FI Norwegian Air Sweden AOC 4 2026-07-26
NSZ5626 Norwegian Air Sweden AOC 4 2026-06-27
NSZ5611 Norwegian Air Sweden AOC 4 2026-06-30
NSZ5610 - 4 2026-06-30
NSZ3519 Norwegian Air Sweden AOC 4 2026-05-07
NSZ3518 Norwegian Air Sweden AOC 4 2026-05-07
NSZ9DQ - 3 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NSZ9GY CDG → CPH Jul 26, 20:45 UTCJul 26, 22:10 UTC1h 25m
2026-07-26 NSZ8FI CPH → CDG Jul 26, 17:35 UTCJul 26, 19:05 UTC1h 30m
2026-07-26 NSZ3227 OSL → CPH Jul 26, 16:00 UTCJul 26, 16:45 UTC45m
2026-07-26 NSZ3226 CPH → OSL Jul 26, 14:25 UTCJul 26, 15:15 UTC50m
2026-07-26 NSZ1KS AGP → CPH Jul 26, 09:55 UTCJul 26, 13:15 UTC3h 20m
2026-07-26 NSZ6PY CPH → AGP Jul 26, 05:35 UTCJul 26, 08:50 UTC3h 16m
2026-07-25 NSZ3667 PMI → CPH Jul 25, 20:05 UTCJul 25, 22:50 UTC2h 45m
2026-07-25 NSZ74Q CPH → PMI Jul 25, 15:45 UTCJul 25, 18:30 UTC2h 45m
2026-07-25 NSZ3299 SJJ → CPH Jul 25, 12:10 UTCJul 25, 14:05 UTC1h 55m
2026-07-25 NSZ3298 CPH → SJJ Jul 25, 09:15 UTCJul 25, 10:50 UTC1h 35m
2026-07-25 NSZ3193 ARN → CPH Jul 25, 07:25 UTCJul 25, 08:15 UTC50m
2026-07-25 NSZ3192 CPH → ARN Jul 25, 05:40 UTCJul 25, 06:35 UTC55m
2026-07-24 NSZ5612 PMI → CPH Jul 24, 15:10 UTCJul 24, 17:50 UTC2h 40m
2026-07-24 NSZ21MU OSL → PMI Jul 24, 10:45 UTCJul 24, 13:50 UTC3h 5m
2026-07-24 NSZ52BQ PMI → OSL Jul 24, 06:30 UTCJul 24, 09:45 UTC3h 15m
2026-07-23 NSZ92L OSL → PMI Jul 23, 18:45 UTCJul 23, 21:35 UTC2h 50m
2026-07-23 NOZ1GP PMI → OSL Jul 23, 11:00 UTCJul 23, 14:30 UTC3h 30m
2026-07-23 NOZ4HU OSL → PMI Jul 23, 06:40 UTCJul 23, 09:30 UTC2h 50m
2026-07-23 NOZ1901 RHO → OSL Jul 23, 01:25 UTCJul 23, 05:20 UTC3h 55m
2026-07-22 NOZ1900 OSL → RHO Jul 22, 20:50 UTCJul 23, 00:30 UTC3h 40m
2026-07-22 NOZ5EU PRG → OSL Jul 22, 18:10 UTCJul 22, 19:45 UTC1h 35m
2026-07-22 NOZ5HE OSL → PRG Jul 22, 15:35 UTCJul 22, 17:10 UTC1h 35m
2026-07-22 NOZ3J TRD → OSL Jul 22, 14:10 UTCJul 22, 14:50 UTC40m
2026-07-22 NOZ6DV OSL → OSL Jul 22, 12:50 UTCJul 22, 13:30 UTC40m
2026-07-22 NOZ1923 DBV → OSL Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 NOZ1922 OSL → DBV Jul 22, 05:00 UTCJul 22, 10:25 UTC5h 25m
2026-07-21 NOZ89K - Jul 21, 18:10 UTCJul 21, 21:55 UTC3h 45m
2026-07-21 NOZ18HE - Jul 21, 13:05 UTCJul 21, 16:40 UTC3h 35m
2026-07-21 NOZ1935 TIA → OSL Jul 21, 09:05 UTCJul 21, 12:00 UTC2h 55m
2026-07-21 NOZ1934 OSL → TIA Jul 21, 04:50 UTCJul 21, 07:20 UTC2h 30m
2026-07-20 NOZ35F EDI → OSL Jul 20, 20:20 UTCJul 20, 21:45 UTC1h 25m
2026-07-20 NOZ1356 OSL → EDI Jul 20, 18:05 UTCJul 20, 19:25 UTC1h 20m
2026-07-20 NOZ277 KRS → OSL Jul 20, 16:20 UTCJul 20, 16:55 UTC35m
2026-07-20 NOZ276 OSL → KRS Jul 20, 15:10 UTCJul 20, 15:40 UTC30m
2026-07-20 NOZ1257 AMS → OSL Jul 20, 12:25 UTCJul 20, 13:50 UTC1h 25m
2026-07-20 NOZ1256 OSL → AMS Jul 20, 09:10 UTCJul 20, 10:35 UTC1h 25m
2026-07-20 NOZ403 AES → OSL Jul 20, 07:40 UTCJul 20, 08:15 UTC35m
2026-07-20 NOZ4PD - Jul 20, 06:15 UTCJul 20, 06:45 UTC30m
2026-07-20 NOZ1HC AES → OSL Jul 20, 04:50 UTCJul 20, 05:20 UTC30m
2026-07-19 NOZ418 OSL → AES Jul 19, 20:35 UTCJul 19, 21:10 UTC35m
2026-07-19 NOZ657 BGO → BGO Jul 19, 18:50 UTCJul 19, 19:25 UTC35m
2026-07-19 NOZ634 OSL → BGO Jul 19, 17:40 UTCJul 19, 18:15 UTC35m
2026-07-19 NOZ3VG BGO → OSL Jul 19, 16:10 UTCJul 19, 16:50 UTC40m
2026-07-19 NOZ6TG - Jul 19, 14:50 UTCJul 19, 15:30 UTC40m
2026-07-19 NOZ321 - Jul 19, 12:05 UTCJul 19, 13:40 UTC1h 35m
2026-07-19 NOZ2FH OSL → ALF Jul 19, 09:25 UTCJul 19, 10:55 UTC1h 30m
2026-07-19 NOZ1051 - Jul 19, 07:25 UTCJul 19, 08:10 UTC45m
2026-07-19 NOZ5PP OSL → GDN Jul 19, 04:55 UTCJul 19, 06:05 UTC1h 10m
2026-07-18 NOZ37N - Jul 18, 19:40 UTCJul 18, 22:45 UTC3h 5m
2026-07-18 NOZ6YE OSL → PMI Jul 18, 15:20 UTCJul 18, 18:25 UTC3h 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 SE-RPL page for operator, model, and routing details .

Mode-S 4ACA0C frequently asked

What is Mode-S code 4ACA0C?
4ACA0C is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RPL.
Where is Mode-S 4ACA0C registered?
Mode-S code 4ACA0C is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA0C broadcasting right now?
Yes. Mode-S 4ACA0C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA0C, octal 22545014, decimal 4,901,388.
What flights does 4ACA0C operate?
Mode-S 4ACA0C has broadcast 20 distinct callsigns, including NSZ6FY, NSZ5GT, NSZ3228, NSZ3302, NSZ3229.