Apparatus

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sensors Mode-S transponder

4ACA8E

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RTN · BOEING 737 MAX 8

Hex
4ACA8E
Octal
22545216
Decimal
4,901,518
Country
SE
Tail
SE-RTN
Type
B38M
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
541
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S 4ACA8E.

Country allocation

The ICAO 24-bit address 4ACA8E 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
NSZ6BG Norwegian Air Sweden AOC 11 2026-07-22
NOZ4RP Norwegian Air Shuttle AOC AS 10 2026-07-25
NOZ5KH Norwegian Air Shuttle AOC AS 9 2026-07-25
NSZ5708 Norwegian Air Sweden AOC 7 2026-07-22
NOZ9CQ Norwegian Air Shuttle AOC AS 5 2026-05-03
NOZ91H Norwegian Air Shuttle AOC AS 5 2026-05-03
NOZ8AG Norwegian Air Shuttle AOC AS 5 2026-07-21
NOZ87G Norwegian Air Shuttle AOC AS 5 2026-06-02
NOZ81R Norwegian Air Shuttle AOC AS 5 2026-07-21
NOZ72C Norwegian Air Shuttle AOC AS 5 2026-06-02
NOZ3PM Norwegian Air Shuttle AOC AS 5 2026-06-06
NOZ383 Norwegian Air Shuttle AOC AS 5 2026-07-25
NOZ1702 Norwegian Air Shuttle AOC AS 5 2026-06-06
NOZ1261 - 5 2026-07-13
NOZ1260 - 5 2026-07-13
NSZ5714 Norwegian Air Sweden AOC 4 2026-05-16
NOZ805 - 4 2026-06-30
NOZ804 - 4 2026-06-30
NOZ7JP - 4 2026-06-18
NOZ76E Norwegian Air Shuttle AOC AS 4 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NOZ429 MOL → OSL Jul 26, 20:20 UTCJul 26, 20:55 UTC35m
2026-07-26 NOZ8DT OSL → MOL Jul 26, 18:55 UTCJul 26, 19:20 UTC25m
2026-07-26 NOZ191 HAU → OSL Jul 26, 17:35 UTCJul 26, 18:15 UTC40m
2026-07-26 NOZ9BH OSL → OSL Jul 26, 16:10 UTCJul 26, 16:45 UTC35m
2026-07-26 NOZ77Y MXP → OSL Jul 26, 12:55 UTCJul 26, 15:15 UTC2h 20m
2026-07-26 NOZ76Z OSL → MXP Jul 26, 09:10 UTCJul 26, 11:35 UTC2h 25m
2026-07-26 NOZ183 HAU → OSL Jul 26, 07:40 UTCJul 26, 08:15 UTC35m
2026-07-26 NOZ182 OSL → HAU Jul 26, 06:20 UTCJul 26, 06:55 UTC36m
2026-07-25 NOZ5KH BEG → OSL Jul 25, 20:05 UTCJul 25, 22:35 UTC2h 30m
2026-07-25 NOZ4RP OSL → BEG Jul 25, 16:45 UTCJul 25, 19:10 UTC2h 25m
2026-07-25 NOZ383 TOS → OSL Jul 25, 14:00 UTCJul 25, 15:30 UTC1h 30m
2026-07-25 NOZ76E OSL → TOS Jul 25, 11:25 UTCJul 25, 12:35 UTC1h 10m
2026-07-25 NOZ5FD BUD → OSL Jul 25, 08:25 UTCJul 25, 10:30 UTC2h 5m
2026-07-25 NOZ5RK OSL → BUD Jul 25, 05:15 UTCJul 25, 07:15 UTC2h 0m
2026-07-24 NOZ1793 ALC → OSL Jul 24, 18:30 UTCJul 24, 22:00 UTC3h 30m
2026-07-24 NOZ1792 OSL → ALC Jul 24, 14:00 UTCJul 24, 17:25 UTC3h 25m
2026-07-24 NOZ5JA EDI → OSL Jul 24, 11:20 UTCJul 24, 12:45 UTC1h 25m
2026-07-24 NOZ3UF OSL → EDI Jul 24, 08:45 UTCJul 24, 10:20 UTC1h 35m
2026-07-24 NOZ183 HAU → OSL Jul 24, 06:50 UTCJul 24, 07:25 UTC35m
2026-07-24 NOZ182 OSL → HAU Jul 24, 05:30 UTCJul 24, 06:00 UTC30m
2026-07-23 NOZ1611 BSL → OSL Jul 23, 19:20 UTCJul 23, 21:40 UTC2h 20m
2026-07-23 NOZ1610 OSL → BSL Jul 23, 16:25 UTCJul 23, 18:15 UTC1h 50m
2026-07-23 NOZ3AW EVE → OSL Jul 23, 14:10 UTCJul 23, 15:20 UTC1h 10m
2026-07-23 NOZ2BE OSL → EVE Jul 23, 11:35 UTCJul 23, 12:45 UTC1h 10m
2026-07-23 NOZ1923 DBV → OSL Jul 23, 07:45 UTCJul 23, 10:40 UTC2h 55m
2026-07-23 NOZ1922 OSL → DBV Jul 23, 04:15 UTCJul 23, 06:40 UTC2h 25m
2026-07-22 NSZ5708 LPA → OSL Jul 22, 16:50 UTCJul 22, 21:45 UTC4h 55m
2026-07-22 NSZ6BG OSL → LPA Jul 22, 10:20 UTCJul 22, 14:35 UTC4h 15m
2026-07-21 NOZ5PO VAR → OSL Jul 21, 18:35 UTCJul 21, 21:35 UTC3h 0m
2026-07-21 NOZ4GV OSL → VAR Jul 21, 14:40 UTCJul 21, 17:25 UTC2h 45m
2026-07-21 NOZ81R AGP → OSL Jul 21, 09:30 UTCJul 21, 13:25 UTC3h 55m
2026-07-21 NOZ8AG OSL → AGP Jul 21, 04:35 UTCJul 21, 08:10 UTC3h 35m
2026-07-20 NOZ1CE OPO → OSL Jul 20, 18:25 UTCJul 20, 21:55 UTC3h 30m
2026-07-20 NOZ8KB BGO → ALC Jul 20, 14:00 UTCJul 20, 17:10 UTC3h 10m
2026-07-20 NOZ3FQ SVG → OSL Jul 20, 12:25 UTCJul 20, 13:00 UTC35m
2026-07-20 NOZ5ZP LGW → SVG Jul 20, 09:55 UTCJul 20, 11:20 UTC1h 25m
2026-07-20 NOZ4DE SVG → LGW Jul 20, 06:55 UTCJul 20, 08:20 UTC1h 25m
2026-07-20 NOZ524 - Jul 20, 05:30 UTCJul 20, 06:05 UTC35m
2026-07-19 NOZ35F EDI → OSL Jul 19, 20:35 UTCJul 19, 22:05 UTC1h 30m
2026-07-19 NOZ1356 OSL → EDI Jul 19, 18:15 UTCJul 19, 19:40 UTC1h 25m
2026-07-19 NOZ6CM DUB → OSL Jul 19, 15:15 UTCJul 19, 17:15 UTC2h 0m
2026-07-19 NOZ2NU OSL → DUB Jul 19, 12:05 UTCJul 19, 14:00 UTC1h 55m
2026-07-19 NOZ1951 - Jul 19, 08:35 UTCJul 19, 10:50 UTC2h 15m
2026-07-19 NOZ1950 OSL → SPU Jul 19, 05:10 UTCJul 19, 06:55 UTC1h 45m
2026-07-18 NOZ9041 AYT → OSL Jul 18, 19:30 UTCJul 18, 23:25 UTC3h 55m
2026-07-18 NOZ9040 OSL → AYT Jul 18, 14:25 UTCJul 18, 18:20 UTC3h 55m
2026-07-18 NOZ1747 VLC → OSL Jul 18, 09:35 UTCJul 18, 12:50 UTC3h 15m
2026-07-18 NOZ1746 OSL → VLC Jul 18, 04:45 UTCJul 18, 08:00 UTC3h 15m
2026-07-17 NOZ1CE OPO → OSL Jul 17, 19:20 UTCJul 17, 22:25 UTC3h 5m
2026-07-17 NOZ8KB OSL → OPO Jul 17, 15:05 UTCJul 17, 18:19 UTC3h 15m

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

Mode-S 4ACA8E frequently asked

What is Mode-S code 4ACA8E?
4ACA8E is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RTN.
Where is Mode-S 4ACA8E registered?
Mode-S code 4ACA8E is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA8E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA8E, octal 22545216, decimal 4,901,518.
What flights does 4ACA8E operate?
Mode-S 4ACA8E has broadcast 20 distinct callsigns, including NSZ6BG, NOZ4RP, NOZ5KH, NSZ5708, NOZ9CQ.