Apparatus

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sensors Mode-S transponder

4ACA8F

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RTO · BOEING 737 MAX 8

Hex
4ACA8F
Octal
22545217
Decimal
4,901,519
Country
SE
Tail
SE-RTO
Type
B38M
Broadcasting now · callsign NOZ1824 · 37,000 ft
Flights observed
517
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 20:35 UTC

Current position

4ACA8F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4ACA8F 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 - 15 2026-07-18
NOZ4RP Norwegian Air Shuttle AOC AS 10 2026-07-24
NSZ5714 Norwegian Air Sweden AOC 9 2026-04-22
NSZ5708 - 8 2026-07-18
NOZ5KH Norwegian Air Shuttle AOC AS 8 2026-07-24
NSZ5700 Norwegian Air Sweden AOC 6 2026-04-22
NOZ9CQ - 6 2026-06-25
NOZ91H Norwegian Air Shuttle AOC AS 6 2026-06-25
NOZ3NG - 5 2026-07-13
NOZ2WZ - 5 2026-07-13
NSZ4KR Norwegian Air Sweden AOC 4 2026-04-19
NOZ9JL Norwegian Air Shuttle AOC AS 4 2026-07-24
NOZ8UE - 4 2026-07-04
NOZ82J - 4 2026-07-09
NOZ804 Norwegian Air Shuttle AOC AS 4 2026-07-19
NOZ5HE Norwegian Air Shuttle AOC AS 4 2026-06-11
NOZ5EU Norwegian Air Shuttle AOC AS 4 2026-06-11
NOZ58U Norwegian Air Shuttle AOC AS 4 2026-07-24
NOZ383 Norwegian Air Shuttle AOC AS 4 2026-07-24
NOZ1561 - 4 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NOZ8PW OSL → BDU Jul 26, 19:20 UTCJul 26, 20:35 UTC1h 15m
2026-07-26 NOZ1611 BSL → OSL Jul 26, 16:35 UTCJul 26, 18:40 UTC2h 5m
2026-07-26 NOZ1610 OSL → BSL Jul 26, 13:35 UTCJul 26, 15:35 UTC2h 0m
2026-07-26 NOZ1279 IST → OSL Jul 26, 09:20 UTCJul 26, 12:30 UTC3h 10m
2026-07-26 NOZ1278 OSL → IST Jul 26, 04:25 UTCJul 26, 07:35 UTC3h 11m
2026-07-25 NOZ3PM TFS → OSL Jul 25, 17:30 UTCJul 25, 22:30 UTC5h 0m
2026-07-25 NOZ1702 OSL → TFS Jul 25, 10:35 UTCJul 25, 15:25 UTC4h 50m
2026-07-25 NOZ2EV VNO → OSL Jul 25, 07:20 UTCJul 25, 09:00 UTC1h 40m
2026-07-25 NOZ6PU - Jul 25, 05:05 UTCJul 25, 06:25 UTC1h 20m
2026-07-24 NOZ9JL AMS → OSL Jul 24, 20:15 UTCJul 24, 21:40 UTC1h 25m
2026-07-24 NOZ58U OSL → AMS Jul 24, 17:30 UTCJul 24, 18:55 UTC1h 25m
2026-07-24 NOZ383 TOS → OSL Jul 24, 15:10 UTCJul 24, 16:35 UTC1h 25m
2026-07-24 NOZ76E OSL → TOS Jul 24, 12:35 UTCJul 24, 14:00 UTC1h 25m
2026-07-24 NOZ5KH BEG → OSL Jul 24, 08:45 UTCJul 24, 11:25 UTC2h 40m
2026-07-24 NOZ4RP OSL → BEG Jul 24, 05:15 UTCJul 24, 07:30 UTC2h 15m
2026-07-23 NOZ8LY CHQ → OSL Jul 23, 16:40 UTCJul 23, 20:35 UTC3h 55m
2026-07-23 NOZ6YV OSL → CHQ Jul 23, 11:40 UTCJul 23, 15:15 UTC3h 35m
2026-07-23 NOZ2MP BOO → OSL Jul 23, 09:30 UTCJul 23, 10:40 UTC1h 10m
2026-07-23 NOZ4RZ OSL → BOO Jul 23, 07:20 UTCJul 23, 08:35 UTC1h 15m
2026-07-23 NOZ1BG BOO → BOO Jul 23, 05:10 UTCJul 23, 06:20 UTC1h 10m
2026-07-22 NOZ56U - Jul 22, 20:15 UTCJul 22, 21:35 UTC1h 20m
2026-07-22 NOZ55J - Jul 22, 18:00 UTCJul 22, 19:10 UTC1h 10m
2026-07-22 NOZ50A OSL → BOO Jul 22, 15:50 UTCJul 22, 17:05 UTC1h 15m
2026-07-22 NOZ1087 PLQ → OSL Jul 22, 13:35 UTCJul 22, 14:45 UTC1h 10m
2026-07-22 NOZ1086 OSL → PLQ Jul 22, 11:45 UTCJul 22, 12:50 UTC1h 5m
2026-07-22 NOZ4RP OSL → BEG Jul 22, 04:35 UTCJul 22, 05:25 UTC50m
2026-07-21 NOZ1277 BJV → OSL Jul 21, 19:15 UTCJul 21, 22:55 UTC3h 40m
2026-07-21 NOZ1276 OSL → BJV Jul 21, 14:20 UTCJul 21, 17:55 UTC3h 35m
2026-07-21 NOZ1563 CLJ → OSL Jul 21, 10:55 UTCJul 21, 13:15 UTC2h 20m
2026-07-21 NOZ1562 OSL → CLJ Jul 21, 07:25 UTCJul 21, 09:30 UTC2h 5m
2026-07-21 NOZ1KV - Jul 21, 04:45 UTCJul 21, 06:10 UTC1h 25m
2026-07-20 NOZ8FD - Jul 20, 19:55 UTCJul 20, 21:20 UTC1h 25m
2026-07-20 NOZ1607 ZRH → OSL Jul 20, 16:40 UTCJul 20, 18:40 UTC2h 0m
2026-07-20 NOZ1606 OSL → ZRH Jul 20, 13:55 UTCJul 20, 15:45 UTC1h 50m
2026-07-20 NOZ1349 MAN → OSL Jul 20, 11:10 UTCJul 20, 12:50 UTC1h 40m
2026-07-20 NOZ8EN - Jul 20, 07:50 UTCJul 20, 09:20 UTC1h 30m
2026-07-20 NOZ1KV - Jul 20, 04:45 UTCJul 20, 06:15 UTC1h 30m
2026-07-19 NOZ8FD - Jul 19, 20:15 UTCJul 19, 21:40 UTC1h 25m
2026-07-19 NOZ1607 ZRH → OSL Jul 19, 17:05 UTCJul 19, 19:05 UTC2h 0m
2026-07-19 NOZ1606 OSL → ZRH Jul 19, 13:55 UTCJul 19, 15:50 UTC1h 55m
2026-07-19 NOZ813 ARN → OSL Jul 19, 11:35 UTCJul 19, 12:15 UTC40m
2026-07-19 NSZ4054 SFT → ARN Jul 19, 09:50 UTCJul 19, 10:45 UTC55m
2026-07-19 NSZ4053 ARN → SFT Jul 19, 08:05 UTCJul 19, 08:55 UTC50m
2026-07-19 NOZ804 OSL → ARN Jul 19, 06:25 UTCJul 19, 07:15 UTC50m
2026-07-18 NSZ5708 - Jul 18, 16:30 UTCJul 18, 21:15 UTC4h 45m
2026-07-18 NSZ6BG - Jul 18, 09:25 UTCJul 18, 14:30 UTC5h 5m
2026-07-18 NOZ51Q - Jul 18, 07:40 UTCJul 18, 08:20 UTC40m
2026-07-18 NOZ42U OSL → TRD Jul 18, 06:25 UTCJul 18, 07:05 UTC40m
2026-07-18 NOZ1YE TRD → TRD Jul 18, 04:40 UTCJul 18, 05:25 UTC45m
2026-07-17 NOZ88A - Jul 17, 21:05 UTCJul 17, 21:39 UTC35m

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

Mode-S 4ACA8F frequently asked

What is Mode-S code 4ACA8F?
4ACA8F is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RTO.
Where is Mode-S 4ACA8F registered?
Mode-S code 4ACA8F is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA8F broadcasting right now?
Yes. Mode-S 4ACA8F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA8F, octal 22545217, decimal 4,901,519.
What flights does 4ACA8F operate?
Mode-S 4ACA8F has broadcast 20 distinct callsigns, including NSZ6BG, NOZ4RP, NSZ5714, NSZ5708, NOZ5KH.