Apparatus

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sensors Mode-S transponder

4ACA08

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RPH · BOEING 737-800

Hex
4ACA08
Octal
22545010
Decimal
4,901,384
Country
SE
Tail
SE-RPH
Type
B738
Broadcasting now · callsign NSZ5352 · 37,200 ft
Flights observed
594
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 22:00 UTC

Current position

4ACA08 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA08 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
NSZ5PF Norwegian Air Sweden AOC 7 2026-07-21
NSZ3731 - 7 2026-06-28
NSZ8WY Norwegian Air Sweden AOC 6 2026-07-21
NSZ5YR Norwegian Air Sweden AOC 6 2026-05-15
NSZ3730 - 6 2026-06-28
NSZ7DE - 5 2026-07-04
NSZ5KA - 5 2026-07-10
NSZ541B - 5 2026-07-02
NSZ4VC - 5 2026-07-04
NSZ3LZ Norwegian Air Sweden AOC 5 2026-07-22
NSZ3LE Norwegian Air Sweden AOC 5 2026-07-22
NSZ3641 - 5 2026-06-18
NSZ3640 - 5 2026-06-18
NSZ3089 - 5 2026-06-21
NSZ1LY Norwegian Air Sweden AOC 5 2026-05-11
NSZ8YZ Norwegian Air Sweden AOC 4 2026-07-23
NSZ8ML - 4 2026-07-11
NSZ8DS - 4 2026-07-15
NSZ89C - 4 2026-07-11
NSZ82F Norwegian Air Sweden AOC 4 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NSZ7VR PSA → CPH Jul 26, 20:15 UTCJul 26, 22:00 UTC1h 45m
2026-07-26 NSZ6UK CPH → PSA Jul 26, 16:55 UTCJul 26, 18:45 UTC1h 50m
2026-07-26 NSZ3205 ARN → ARN Jul 26, 14:40 UTCJul 26, 15:35 UTC55m
2026-07-26 NSZ4064 KRN → ARN Jul 26, 11:55 UTCJul 26, 13:10 UTC1h 15m
2026-07-26 NSZ4063 ARN → KRN Jul 26, 09:55 UTCJul 26, 11:05 UTC1h 10m
2026-07-26 NSZ36J LLA → ARN Jul 26, 08:05 UTCJul 26, 09:05 UTC1h 0m
2026-07-26 NSZ35A ARN → LLA Jul 26, 06:10 UTCJul 26, 07:05 UTC56m
2026-07-25 NSZ4340 PUY → ARN Jul 25, 19:50 UTCJul 25, 22:00 UTC2h 10m
2026-07-25 NSZ39TP ARN → PUY Jul 25, 16:30 UTCJul 25, 18:50 UTC2h 20m
2026-07-25 NSZ6LA LGW → ARN Jul 25, 13:15 UTCJul 25, 15:10 UTC1h 55m
2026-07-25 NSZ5WU ARN → LGW Jul 25, 09:15 UTCJul 25, 11:40 UTC2h 25m
2026-07-25 NSZ38K LLA → ARN Jul 25, 07:05 UTCJul 25, 08:05 UTC1h 0m
2026-07-25 NSZ35A ARN → LLA Jul 25, 05:15 UTCJul 25, 06:10 UTC55m
2026-07-24 NSZ4354 AMS → ARN Jul 24, 20:20 UTCJul 24, 22:00 UTC1h 40m
2026-07-24 NSZ4353 ARN → AMS Jul 24, 17:30 UTCJul 24, 19:00 UTC1h 30m
2026-07-24 NSZ3206 CPH → ARN Jul 24, 14:50 UTCJul 24, 15:50 UTC1h 0m
2026-07-24 NSZ3563 KRK → CPH Jul 24, 12:05 UTCJul 24, 13:20 UTC1h 15m
2026-07-24 NSZ3807 ARN → KRK Jul 24, 09:45 UTCJul 24, 11:10 UTC1h 25m
2026-07-24 NSZ3806 KRK → ARN Jul 24, 09:10 UTCJul 24, 09:40 UTC30m
2026-07-24 NSZ3806 KRK → ARN Jul 24, 08:15 UTCJul 24, 09:00 UTC45m
2026-07-24 NSZ3806 KRK → ARN Jul 24, 07:20 UTCJul 24, 08:10 UTC50m
2026-07-24 NSZ3562 CPH → KRK Jul 24, 05:10 UTCJul 24, 06:15 UTC1h 5m
2026-07-23 NSZ3097 AAL → CPH Jul 23, 19:10 UTCJul 23, 19:40 UTC30m
2026-07-23 NSZ2NZ CPH → AAL Jul 23, 18:05 UTCJul 23, 18:35 UTC30m
2026-07-23 NSZ3303 BER → CPH Jul 23, 16:35 UTCJul 23, 17:20 UTC45m
2026-07-23 NSZ3302 CPH → BER Jul 23, 15:10 UTCJul 23, 15:45 UTC35m
2026-07-23 NSZ3093 AAL → CPH Jul 23, 13:05 UTCJul 23, 13:30 UTC25m
2026-07-23 NSZ8YZ CPH → AAL Jul 23, 11:45 UTCJul 23, 12:10 UTC25m
2026-07-23 NSZ3295 TIV → CPH Jul 23, 08:40 UTCJul 23, 10:40 UTC2h 0m
2026-07-23 NSZ3294 CPH → TIV Jul 23, 05:20 UTCJul 23, 07:05 UTC1h 45m
2026-07-22 NSZ3283 PUY → CPH Jul 22, 21:15 UTCJul 22, 22:55 UTC1h 40m
2026-07-22 NSZ3282 CPH → PUY Jul 22, 18:50 UTCJul 22, 20:25 UTC1h 35m
2026-07-22 NSZ5372 ALC → CPH Jul 22, 14:40 UTCJul 22, 17:50 UTC3h 10m
2026-07-22 NSZ3LE ARN → ALC Jul 22, 11:10 UTCJul 22, 13:30 UTC2h 20m
2026-07-22 NSZ3LZ ALC → ARN Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-21 NSZ59FZ SVG → ALC Jul 21, 23:00 UTCJul 22, 01:55 UTC2h 55m
2026-07-21 NSZ8450 CPH → CPH Jul 21, 19:25 UTCJul 21, 22:10 UTC2h 45m
2026-07-21 NSZ5336 - Jul 21, 14:00 UTCJul 21, 14:45 UTC45m
2026-07-21 NSZ8WY BGO → ALC Jul 21, 09:40 UTCJul 21, 12:50 UTC3h 10m
2026-07-21 NSZ5PF ALC → BGO Jul 21, 05:10 UTCJul 21, 08:40 UTC3h 30m
2026-07-20 NSZ5HA ARN → ALC Jul 20, 16:50 UTCJul 20, 20:30 UTC3h 40m
2026-07-20 NSZ5352 ALC → ARN Jul 20, 12:25 UTCJul 20, 16:00 UTC3h 35m
2026-07-20 NSZ5357 - Jul 20, 07:30 UTCJul 20, 10:40 UTC3h 10m
2026-07-19 NSZ4FU ALC → GOT Jul 19, 15:45 UTCJul 19, 18:50 UTC3h 5m
2026-07-19 NSZ3LE - Jul 19, 09:40 UTCJul 19, 13:25 UTC3h 45m
2026-07-19 NSZ3LZ ALC → ARN Jul 19, 05:10 UTCJul 19, 08:35 UTC3h 25m
2026-07-18 NSZ9UM - Jul 18, 18:15 UTCJul 18, 21:50 UTC3h 35m
2026-07-18 NSZ5362 - Jul 18, 14:00 UTCJul 18, 17:15 UTC3h 15m
2026-07-18 NSZ6WH - Jul 18, 09:35 UTCJul 18, 12:25 UTC2h 50m
2026-07-18 NSZ5380 ALC → BLL Jul 18, 05:50 UTCJul 18, 08:40 UTC2h 50m

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

Mode-S 4ACA08 frequently asked

What is Mode-S code 4ACA08?
4ACA08 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RPH.
Where is Mode-S 4ACA08 registered?
Mode-S code 4ACA08 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA08 broadcasting right now?
Yes. Mode-S 4ACA08 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA08, octal 22545010, decimal 4,901,384.
What flights does 4ACA08 operate?
Mode-S 4ACA08 has broadcast 20 distinct callsigns, including NSZ5PF, NSZ3731, NSZ8WY, NSZ5YR, NSZ3730.