Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4ACA04

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RPD · BOEING 737-800

Hex
4ACA04
Octal
22545004
Decimal
4,901,380
Country
SE
Tail
SE-RPD
Type
B738
No current signal · last broadcast 3h ago
Flights observed
250
Distinct callsigns
20
Country
SE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4ACA04.

Country allocation

The ICAO 24-bit address 4ACA04 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
NSZ5GT Norwegian Air Sweden AOC 8 2026-05-07
NSZ6FY Norwegian Air Sweden AOC 7 2026-05-07
NSZ7VR Norwegian Air Sweden AOC 4 2026-05-25
NSZ6UK Norwegian Air Sweden AOC 4 2026-05-25
NSZ5610 Norwegian Air Sweden AOC 4 2026-05-04
NSZ3731 Norwegian Air Sweden AOC 4 2026-05-11
NSZ3730 Norwegian Air Sweden AOC 4 2026-05-11
NSZ3303 Norwegian Air Sweden AOC 4 2026-05-28
NSZ3235 Norwegian Air Sweden AOC 4 2026-05-20
NSZ89C Norwegian Air Sweden AOC 3 2026-05-07
NSZ5618 Norwegian Air Sweden AOC 3 2026-05-06
NSZ5611 Norwegian Air Sweden AOC 3 2026-05-07
NSZ3516 Norwegian Air Sweden AOC 3 2026-05-11
NSZ3302 Norwegian Air Sweden AOC 3 2026-05-28
NSZ3291 Norwegian Air Sweden AOC 3 2026-05-16
NSZ3290 Norwegian Air Sweden AOC 3 2026-05-16
NSZ3230 Norwegian Air Sweden AOC 3 2026-05-17
NSZ9GY Norwegian Air Sweden AOC 2 2026-05-28
NSZ9BH Norwegian Air Sweden AOC 2 2026-05-28
NSZ8MV Norwegian Air Sweden AOC 2 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 NSZ73N EDI → CPH May 30, 13:15 UTCMay 30, 14:35 UTC1h 20m
2026-05-30 NSZ3504 CPH → EDI May 30, 10:40 UTCMay 30, 12:15 UTC1h 35m
2026-05-30 NSZ3289 SPU → CPH May 30, 07:25 UTCMay 30, 09:20 UTC1h 55m
2026-05-30 NSZ3288 CPH → SPU May 30, 04:25 UTCMay 30, 06:05 UTC1h 40m
2026-05-29 NSZ3519 LGW → CPH May 29, 18:40 UTCMay 29, 20:05 UTC1h 25m
2026-05-29 NSZ3518 CPH → LGW May 29, 16:00 UTCMay 29, 17:35 UTC1h 35m
2026-05-29 NSZ3529 NCL → CPH May 29, 13:35 UTCMay 29, 15:05 UTC1h 30m
2026-05-29 NSZ3528 CPH → NCL May 29, 10:50 UTCMay 29, 12:15 UTC1h 25m
2026-05-29 NSZ3753 BRI → CPH May 29, 07:20 UTCMay 29, 09:50 UTC2h 30m
2026-05-29 NSZ3752 CPH → BRI May 29, 04:05 UTCMay 29, 06:10 UTC2h 5m
2026-05-28 NSZ9GY CDG → CPH May 28, 20:05 UTCMay 28, 21:35 UTC1h 30m
2026-05-28 NSZ8FI CPH → CDG May 28, 17:20 UTCMay 28, 18:50 UTC1h 30m
2026-05-28 NSZ3303 BER → CPH May 28, 15:40 UTCMay 28, 16:20 UTC40m
2026-05-28 NSZ3302 CPH → BER May 28, 13:50 UTCMay 28, 14:30 UTC40m
2026-05-28 NSZ3751 BGY → CPH May 28, 11:10 UTCMay 28, 12:50 UTC1h 40m
2026-05-28 NSZ3750 CPH → BGY May 28, 08:30 UTCMay 28, 10:10 UTC1h 40m
2026-05-28 NSZ9BH AAL → CPH May 28, 07:10 UTCMay 28, 07:40 UTC30m
2026-05-28 NSZ3080 CPH → AAL May 28, 05:55 UTCMay 28, 06:25 UTC30m
2026-05-28 NSZ3079 AAL → CPH May 28, 04:35 UTCMay 28, 05:10 UTC35m
2026-05-27 NSZ6MP CPH → AAL May 27, 18:50 UTCMay 27, 19:20 UTC30m
2026-05-27 NSZ2RT ARN → CPH May 27, 17:15 UTCMay 27, 18:05 UTC50m
2026-05-27 NSZ8MV CPH → ARN May 27, 15:20 UTCMay 27, 16:15 UTC55m
2026-05-27 NSZ3749 PMO → CPH May 27, 09:45 UTCMay 27, 12:40 UTC2h 55m
2026-05-27 NSZ3748 CPH → PMO May 27, 06:04 UTCMay 27, 08:30 UTC2h 25m
2026-05-26 NOZ8PV ALF → TOS May 26, 16:05 UTCMay 26, 16:50 UTC45m
2026-05-26 NOZ8467 BGO → OSL May 26, 14:24 UTCMay 26, 15:29 UTC1h 5m
2026-05-26 NOZ8466 - May 26, 11:39 UTCMay 26, 13:00 UTC1h 20m
2026-05-26 NOZ4DG OSL → OSL May 26, 10:05 UTCMay 26, 11:00 UTC55m
2026-05-26 NSZ3501 EDI → CPH May 26, 07:55 UTCMay 26, 09:15 UTC1h 20m
2026-05-26 NSZ3500 CPH → EDI May 26, 05:25 UTCMay 26, 07:05 UTC1h 40m
2026-05-25 NSZ3733 FCO → CPH May 25, 19:40 UTCMay 25, 21:49 UTC2h 10m
2026-05-25 NSZ3732 CPH → FCO May 25, 16:30 UTCMay 25, 18:30 UTC2h 0m
2026-05-25 NSZ3527 MAN → CPH May 25, 14:00 UTCMay 25, 15:25 UTC1h 25m
2026-05-25 NSZ3526 CPH → MAN May 25, 11:25 UTCMay 25, 13:00 UTC1h 35m
2026-05-25 NSZ7VR PSA → CPH May 25, 08:25 UTCMay 25, 10:15 UTC1h 50m
2026-05-25 NSZ6UK CPH → PSA May 25, 05:15 UTCMay 25, 07:10 UTC1h 55m
2026-05-24 NSZ3305 BER → CPH May 24, 20:40 UTCMay 24, 21:20 UTC40m
2026-05-24 NSZ3304 CPH → BER May 24, 19:05 UTCMay 24, 19:40 UTC35m
2026-05-24 NSZ541B AMS → CPH May 24, 17:25 UTCMay 24, 18:15 UTC50m
2026-05-24 NSZ54CA CPH → AMS May 24, 15:05 UTCMay 24, 16:15 UTC1h 10m
2026-05-24 NSZ3643 NCE → CPH May 24, 12:05 UTCMay 24, 14:05 UTC2h 0m
2026-05-24 NSZ3642 CPH → NCE May 24, 08:50 UTCMay 24, 10:50 UTC2h 0m
2026-05-24 NSZ9BH AAL → CPH May 24, 07:15 UTCMay 24, 07:40 UTC25m
2026-05-24 NSZ3080 CPH → AAL May 24, 06:00 UTCMay 24, 06:30 UTC30m
2026-05-23 NSZ3615 FNC → CPH May 23, 15:25 UTCMay 23, 18:55 UTC3h 30m
2026-05-23 NSZ3615 FNC → CPH May 23, 14:35 UTCMay 23, 14:45 UTC10m
2026-05-23 NSZ3614 CPH → FNC May 23, 13:25 UTCMay 23, 13:35 UTC10m
2026-05-23 NSZ3614 CPH → FNC May 23, 09:05 UTCMay 23, 12:40 UTC3h 35m
2026-05-23 NSZ3195 ARN → CPH May 23, 06:50 UTCMay 23, 07:40 UTC50m
2026-05-23 NSZ3194 CPH → ARN May 23, 05:00 UTCMay 23, 05:55 UTC55m

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-RPD page for operator, model, and routing details .

Mode-S 4ACA04 frequently asked

What is Mode-S code 4ACA04?
4ACA04 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RPD.
Where is Mode-S 4ACA04 registered?
Mode-S code 4ACA04 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA04 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA04, octal 22545004, decimal 4,901,380.
What flights does 4ACA04 operate?
Mode-S 4ACA04 has broadcast 20 distinct callsigns, including NSZ5GT, NSZ6FY, NSZ7VR, NSZ6UK, NSZ5610.