Apparatus

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sensors Mode-S transponder

4ACA05

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RPE · BOEING 737-800

Hex
4ACA05
Octal
22545005
Decimal
4,901,381
Country
SE
Tail
SE-RPE
Type
B738
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
420
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S 4ACA05.

Country allocation

The ICAO 24-bit address 4ACA05 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
NSZ5357 Norwegian Air Sweden AOC 11 2026-05-24
NSZ4FU Norwegian Air Sweden AOC 10 2026-05-23
NSZ5PF Norwegian Air Sweden AOC 7 2026-05-15
NSZ5272 Norwegian Air Sweden AOC 7 2026-05-22
NSZ8WY Norwegian Air Sweden AOC 6 2026-05-15
NSZ59FZ Norwegian Air Sweden AOC 6 2026-05-15
NSZ5352 Norwegian Air Sweden AOC 6 2026-05-12
NSZ5273 Norwegian Air Sweden AOC 6 2026-05-22
NSZ5261 Norwegian Air Sweden AOC 6 2026-05-24
NSZ5260 Norwegian Air Sweden AOC 6 2026-05-24
NSZ3095 - 6 2026-07-14
NSZ1LY Norwegian Air Sweden AOC 6 2026-05-17
NSZ9RA Norwegian Air Sweden AOC 5 2026-05-27
NSZ5YR Norwegian Air Sweden AOC 5 2026-05-17
NSZ5ML Norwegian Air Sweden AOC 5 2026-05-01
NSZ5372 Norwegian Air Sweden AOC 5 2026-05-24
NSZ5336 Norwegian Air Sweden AOC 5 2026-05-15
NSZ3288 Norwegian Air Sweden AOC 5 2026-07-25
NSZ2WP Norwegian Air Sweden AOC 5 2026-05-16
NSZ8DS Norwegian Air Sweden AOC 4 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NSZ3309 MUC → CPH Jul 26, 19:55 UTCJul 26, 21:05 UTC1h 10m
2026-07-26 NSZ3308 CPH → MUC Jul 26, 17:30 UTCJul 26, 18:45 UTC1h 15m
2026-07-26 NSZ3563 KRK → CPH Jul 26, 15:25 UTCJul 26, 16:35 UTC1h 10m
2026-07-26 NSZ3562 CPH → KRK Jul 26, 13:20 UTCJul 26, 14:30 UTC1h 10m
2026-07-26 NSZ3613 OPO → CPH Jul 26, 09:05 UTCJul 26, 12:05 UTC3h 0m
2026-07-26 NSZ2EM CPH → CPH Jul 26, 05:15 UTCJul 26, 08:05 UTC2h 51m
2026-07-25 NSZ3293 TIA → CPH Jul 25, 16:30 UTCJul 25, 22:55 UTC6h 25m
2026-07-25 NSZ3649 BIA → CPH Jul 25, 13:30 UTCJul 25, 15:25 UTC1h 55m
2026-07-25 NSZ3648 CPH → BIA Jul 25, 10:25 UTCJul 25, 12:25 UTC2h 0m
2026-07-25 NSZ3289 SPU → CPH Jul 25, 07:25 UTCJul 25, 09:15 UTC1h 50m
2026-07-25 NSZ3288 CPH → SPU Jul 25, 04:30 UTCJul 25, 06:05 UTC1h 35m
2026-07-24 NSZ3525 LGW → CPH Jul 24, 16:30 UTCJul 24, 17:55 UTC1h 25m
2026-07-24 NSZ3524 CPH → LGW Jul 24, 13:45 UTCJul 24, 15:20 UTC1h 35m
2026-07-24 NSZ3749 PMO → CPH Jul 24, 09:10 UTCJul 24, 12:00 UTC2h 50m
2026-07-24 NSZ3748 CPH → PMO Jul 24, 05:15 UTCJul 24, 07:30 UTC2h 15m
2026-07-23 NSZ9GY CDG → CPH Jul 23, 20:05 UTCJul 23, 21:35 UTC1h 30m
2026-07-23 NSZ8FI CPH → CDG Jul 23, 17:20 UTCJul 23, 18:50 UTC1h 30m
2026-07-23 NSZ3747 BLQ → CPH Jul 23, 14:30 UTCJul 23, 16:20 UTC1h 50m
2026-07-23 NSZ3746 CPH → BLQ Jul 23, 11:35 UTCJul 23, 13:10 UTC1h 35m
2026-07-23 NSZ3629 MPL → CPH Jul 23, 08:35 UTCJul 23, 10:40 UTC2h 5m
2026-07-23 NSZ3628 CPH → MPL Jul 23, 05:35 UTCJul 23, 07:40 UTC2h 5m
2026-07-22 NSZ365L BCN → CPH Jul 22, 11:10 UTCJul 22, 13:35 UTC2h 25m
2026-07-21 NSZ8WM - Jul 21, 20:25 UTCJul 21, 20:55 UTC30m
2026-07-21 NSZ3097 AAL → CPH Jul 21, 19:15 UTCJul 21, 19:40 UTC25m
2026-07-21 NSZ2NZ - Jul 21, 18:05 UTCJul 21, 18:30 UTC25m
2026-07-21 NSZ81MQ PRG → CPH Jul 21, 16:10 UTCJul 21, 17:10 UTC1h 0m
2026-07-21 NSZ3582 CPH → PRG Jul 21, 14:10 UTCJul 21, 15:05 UTC55m
2026-07-21 NSZ3391 LCA → CPH Jul 21, 09:05 UTCJul 21, 12:55 UTC3h 50m
2026-07-21 NSZ3390 CPH → LCA Jul 21, 04:15 UTCJul 21, 07:50 UTC3h 35m
2026-07-20 NSZ4WF ATH → CPH Jul 20, 19:25 UTCJul 20, 22:20 UTC2h 55m
2026-07-20 NSZ3376 CPH → ATH Jul 20, 15:25 UTCJul 20, 18:10 UTC2h 45m
2026-07-20 NSZ89C PRG → CPH Jul 20, 13:10 UTCJul 20, 14:10 UTC1h 0m
2026-07-20 NSZ8ML CPH → PRG Jul 20, 11:20 UTCJul 20, 12:15 UTC55m
2026-07-20 NSZ6GW BOD → CPH Jul 20, 07:55 UTCJul 20, 10:00 UTC2h 5m
2026-07-20 NSZ32JW CPH → BOD Jul 20, 04:50 UTCJul 20, 07:00 UTC2h 10m
2026-07-19 NSZ3747 - Jul 19, 19:50 UTCJul 19, 21:35 UTC1h 45m
2026-07-19 NSZ3746 CPH → BLQ Jul 19, 17:00 UTCJul 19, 18:40 UTC1h 40m
2026-07-19 NSZ3637 - Jul 19, 14:45 UTCJul 19, 16:10 UTC1h 25m
2026-07-19 NSZ3636 CPH → CDG Jul 19, 12:00 UTCJul 19, 13:30 UTC1h 30m
2026-07-19 NSZ3731 FCO → CPH Jul 19, 07:50 UTCJul 19, 09:50 UTC2h 0m
2026-07-19 NSZ3730 CPH → FCO Jul 19, 04:35 UTCJul 19, 06:40 UTC2h 5m
2026-07-18 NSZ3293 - Jul 18, 20:55 UTCJul 18, 22:55 UTC2h 0m
2026-07-18 NSZ3292 - Jul 18, 17:00 UTCJul 18, 18:50 UTC1h 50m
2026-07-18 NSZ3649 BIA → CPH Jul 18, 13:30 UTCJul 18, 15:25 UTC1h 55m
2026-07-18 NSZ3648 CPH → BIA Jul 18, 10:15 UTCJul 18, 12:15 UTC2h 0m
2026-07-18 NSZ3289 - Jul 18, 07:25 UTCJul 18, 09:10 UTC1h 45m
2026-07-18 NSZ3288 - Jul 18, 04:30 UTCJul 18, 06:10 UTC1h 40m
2026-07-17 NSZ3305 BER → CPH Jul 17, 21:00 UTCJul 17, 21:39 UTC40m
2026-07-17 NSZ3304 CPH → BER Jul 17, 19:30 UTCJul 17, 20:10 UTC40m
2026-07-17 NSZ3525 LGW → CPH Jul 17, 16:10 UTCJul 17, 17:40 UTC1h 30m

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

Mode-S 4ACA05 frequently asked

What is Mode-S code 4ACA05?
4ACA05 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RPE.
Where is Mode-S 4ACA05 registered?
Mode-S code 4ACA05 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA05 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA05, octal 22545005, decimal 4,901,381.
What flights does 4ACA05 operate?
Mode-S 4ACA05 has broadcast 20 distinct callsigns, including NSZ5357, NSZ4FU, NSZ5PF, NSZ5272, NSZ8WY.