Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 2d ago
Flights observed
173
Distinct callsigns
20
Country
SE
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 4ACA0C.

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
NSZ3302 Norwegian Air Sweden AOC 5 2026-05-12
NSZ3519 Norwegian Air Sweden AOC 4 2026-05-07
NSZ3518 Norwegian Air Sweden AOC 4 2026-05-07
NSZ3303 Norwegian Air Sweden AOC 4 2026-05-12
NSZ3229 Norwegian Air Sweden AOC 4 2026-05-22
NSZ3228 Norwegian Air Sweden AOC 4 2026-05-22
NSZ3095 Norwegian Air Sweden AOC 4 2026-05-22
NSZ9RA Norwegian Air Sweden AOC 3 2026-05-22
NSZ9BP - 3 2026-04-13
NSZ8YZ Norwegian Air Sweden AOC 3 2026-05-03
NSZ8TQ - 3 2026-04-13
NSZ6PY Norwegian Air Sweden AOC 3 2026-05-12
NSZ55YN Norwegian Air Sweden AOC 3 2026-05-07
NSZ3641 Norwegian Air Sweden AOC 3 2026-05-25
NSZ3640 Norwegian Air Sweden AOC 3 2026-05-25
NSZ3093 Norwegian Air Sweden AOC 3 2026-05-03
NSZ1KS Norwegian Air Sweden AOC 3 2026-05-12
NSZ9GY Norwegian Air Sweden AOC 2 2026-05-12
NSZ8PV Norwegian Air Sweden AOC 2 2026-05-09
NSZ8FI Norwegian Air Sweden AOC 2 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 NSZ7DE CTA → CPH May 27, 19:05 UTCMay 27, 21:55 UTC2h 50m
2026-05-27 NSZ4VC CPH → CTA May 27, 15:10 UTCMay 27, 17:45 UTC2h 35m
2026-05-27 NSZ3531 MLA → CPH May 27, 11:05 UTCMay 27, 14:05 UTC3h 0m
2026-05-27 NSZ3530 CPH → MLA May 27, 07:15 UTCMay 27, 10:05 UTC2h 50m
2026-05-26 NSZ3733 FCO → CPH May 26, 19:34 UTCMay 26, 21:40 UTC2h 5m
2026-05-26 NSZ3732 CPH → FCO May 26, 16:15 UTCMay 26, 18:14 UTC2h 0m
2026-05-26 NSZ5HM ALC → CPH May 26, 11:44 UTCMay 26, 14:35 UTC2h 50m
2026-05-26 NSZ64N PMI → CPH May 26, 07:34 UTCMay 26, 10:20 UTC2h 45m
2026-05-25 NSZ541B AMS → CPH May 25, 16:55 UTCMay 25, 17:55 UTC1h 0m
2026-05-25 NSZ54CA CPH → AMS May 25, 14:30 UTCMay 25, 15:35 UTC1h 5m
2026-05-25 NSZ3641 NCE → CPH May 25, 11:40 UTCMay 25, 13:35 UTC1h 55m
2026-05-25 NSZ3640 CPH → NCE May 25, 08:45 UTCMay 25, 10:45 UTC2h 0m
2026-05-24 NSZ3705 MAD → CPH May 24, 18:45 UTCMay 24, 21:30 UTC2h 45m
2026-05-24 NSZ3704 CPH → MAD May 24, 14:30 UTCMay 24, 17:15 UTC2h 45m
2026-05-24 NSZ3227 OSL → CPH May 24, 12:30 UTCMay 24, 13:20 UTC50m
2026-05-24 NSZ3226 CPH → OSL May 24, 10:55 UTCMay 24, 11:45 UTC50m
2026-05-24 NSZ3731 FCO → CPH May 24, 08:00 UTCMay 24, 10:10 UTC2h 10m
2026-05-24 NSZ3730 CPH → FCO May 24, 04:15 UTCMay 24, 06:15 UTC2h 0m
2026-05-22 NSZ3305 BER → CPH May 22, 19:55 UTCMay 22, 20:35 UTC40m
2026-05-22 NSZ3304 CPH → BER May 22, 18:20 UTCMay 22, 19:00 UTC40m
2026-05-22 NSZ3095 AAL → CPH May 22, 17:05 UTCMay 22, 17:35 UTC30m
2026-05-22 NSZ9RA CPH → AAL May 22, 16:05 UTCMay 22, 16:30 UTC25m
2026-05-22 NSZ3229 OSL → CPH May 22, 14:15 UTCMay 22, 15:00 UTC45m
2026-05-22 NSZ3228 CPH → OSL May 22, 12:30 UTCMay 22, 13:20 UTC50m
2026-05-22 NSZ3375 ATH → CPH May 22, 08:20 UTCMay 22, 11:35 UTC3h 14m
2026-05-22 NSZ3374 CPH → ATH May 22, 04:10 UTCMay 22, 07:00 UTC2h 50m
2026-05-21 NSZ3305 BER → CPH May 21, 19:55 UTCMay 21, 20:40 UTC45m
2026-05-21 NSZ3304 CPH → BER May 21, 18:25 UTCMay 21, 19:00 UTC35m
2026-05-21 NSZ3095 AAL → CPH May 21, 17:05 UTCMay 21, 17:35 UTC30m
2026-05-21 NSZ9RA CPH → AAL May 21, 16:01 UTCMay 21, 16:30 UTC30m
2026-05-21 NSZ3229 OSL → CPH May 21, 14:20 UTCMay 21, 15:10 UTC50m
2026-05-21 NSZ3228 CPH → OSL May 21, 12:45 UTCMay 21, 13:40 UTC55m
2026-05-21 NSZ3225 CPH → OSL May 21, 10:45 UTCMay 21, 11:30 UTC45m
2026-05-21 NSZ3224 CPH → OSL May 21, 08:50 UTCMay 21, 09:45 UTC55m
2026-05-21 NSZ3221 OSL → CPH May 21, 07:10 UTCMay 21, 07:55 UTC45m
2026-05-21 NSZ3220 CPH → OSL May 21, 05:20 UTCMay 21, 06:10 UTC50m
2026-05-20 NSZ3291 PRN → CPH May 20, 20:00 UTCMay 20, 22:10 UTC2h 10m
2026-05-20 NSZ3290 CPH → PRN May 20, 16:40 UTCMay 20, 18:45 UTC2h 5m
2026-05-20 NSZ3641 NCE → CPH May 20, 12:15 UTCMay 20, 14:30 UTC2h 15m
2026-05-20 NSZ3640 CPH → NCE May 20, 08:35 UTCMay 20, 10:45 UTC2h 10m
2026-05-20 NSZ3195 ARN → CPH May 20, 06:50 UTCMay 20, 07:40 UTC50m
2026-05-20 NSZ3194 CPH → ARN May 20, 05:00 UTCMay 20, 05:55 UTC55m
2026-05-19 NSZ3095 AAL → CPH May 19, 16:55 UTCMay 19, 17:25 UTC30m
2026-05-19 NSZ9RA CPH → AAL May 19, 15:55 UTCMay 19, 16:20 UTC25m
2026-05-19 NSZ3229 OSL → CPH May 19, 14:10 UTCMay 19, 15:00 UTC50m
2026-05-19 NSZ3228 CPH → OSL May 19, 12:30 UTCMay 19, 13:25 UTC55m
2026-05-19 NSZ3085 AAL → CPH May 19, 10:20 UTCMay 19, 10:50 UTC30m
2026-05-19 NSZ82F CPH → AAL May 19, 09:10 UTCMay 19, 09:35 UTC25m
2026-05-19 NSZ89C PRG → CPH May 19, 07:10 UTCMay 19, 08:10 UTC1h 0m
2026-05-19 NSZ8ML CPH → PRG May 19, 05:05 UTCMay 19, 06:05 UTC1h 0m

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?
No active broadcast right now. Last signal was 2d ago.
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 NSZ3302, NSZ3519, NSZ3518, NSZ3303, NSZ3229.