Apparatus

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sensors Mode-S transponder

4ACA8D

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RTM · BOEING 737 MAX 8

Hex
4ACA8D
Octal
22545215
Decimal
4,901,517
Country
SE
Tail
SE-RTM
Type
B38M
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
549
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S 4ACA8D.

Country allocation

The ICAO 24-bit address 4ACA8D 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
NOZ91H Norwegian Air Shuttle AOC AS 9 2026-06-21
NSZ6BG - 8 2026-07-04
NOZ9CQ - 8 2026-06-21
NSZ5708 - 7 2026-07-04
NOZ4RP - 7 2026-07-11
NOZ383 - 7 2026-07-11
NOZ5KH - 6 2026-07-10
NOZ1719 - 6 2026-07-20
NOZ1718 - 6 2026-07-20
NOZ90L Norwegian Air Shuttle AOC AS 5 2026-07-21
NOZ89Z - 5 2026-07-21
NOZ87G - 5 2026-07-20
NOZ72C - 5 2026-07-20
NOZ32A - 5 2026-07-09
NOZ1261 Norwegian Air Shuttle AOC AS 5 2026-05-27
NOZ1260 Norwegian Air Shuttle AOC AS 5 2026-05-27
NOZ9BH - 4 2026-07-13
NOZ8KB - 4 2026-07-15
NOZ8FD Norwegian Air Shuttle AOC AS 4 2026-07-24
NOZ7JP - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NOZ549 SVG → OSL Jul 26, 20:15 UTCJul 26, 20:55 UTC40m
2026-07-26 NOZ548 OSL → SVG Jul 26, 19:00 UTCJul 26, 19:35 UTC35m
2026-07-26 NOZ11G LGW → OSL Jul 26, 16:15 UTCJul 26, 17:55 UTC1h 40m
2026-07-26 NOZ1312 OSL → LGW Jul 26, 13:20 UTCJul 26, 15:10 UTC1h 50m
2026-07-26 NOZ1847 BGY → OSL Jul 26, 09:30 UTCJul 26, 11:40 UTC2h 10m
2026-07-26 NOZ1846 OSL → BGY Jul 26, 06:05 UTCJul 26, 08:15 UTC2h 11m
2026-07-25 NOZ97AF SKG → OSL Jul 25, 17:30 UTCJul 25, 20:45 UTC3h 15m
2026-07-25 NOZ906M OSL → SKG Jul 25, 13:35 UTCJul 25, 16:30 UTC2h 55m
2026-07-25 NOZ9LP CDG → OSL Jul 25, 10:30 UTCJul 25, 12:25 UTC1h 55m
2026-07-25 NOZ9TK OSL → CDG Jul 25, 07:20 UTCJul 25, 09:15 UTC1h 55m
2026-07-25 NOZ1KV TOS → TOS Jul 25, 04:50 UTCJul 25, 06:15 UTC1h 25m
2026-07-24 NOZ8FD OSL → TOS Jul 24, 20:10 UTCJul 24, 21:25 UTC1h 15m
2026-07-24 NOZ1607 ZRH → OSL Jul 24, 17:10 UTCJul 24, 19:15 UTC2h 5m
2026-07-24 NOZ1606 OSL → ZRH Jul 24, 14:20 UTCJul 24, 16:05 UTC1h 45m
2026-07-24 NOZ1561 OTP → OSL Jul 24, 10:30 UTCJul 24, 13:20 UTC2h 50m
2026-07-24 NOZ1560 OSL → OTP Jul 24, 06:55 UTCJul 24, 09:25 UTC2h 30m
2026-07-23 NOZ4YA KRK → OSL Jul 23, 19:50 UTCJul 23, 21:45 UTC1h 55m
2026-07-23 NOZ4DY OSL → KRK Jul 23, 17:20 UTCJul 23, 18:55 UTC1h 35m
2026-07-23 NOZ415 AES → OSL Jul 23, 15:55 UTCJul 23, 16:25 UTC30m
2026-07-23 NOZ412 OSL → AES Jul 23, 14:20 UTCJul 23, 14:45 UTC25m
2026-07-23 NOZ1053 GDN → OSL Jul 23, 11:50 UTCJul 23, 12:35 UTC45m
2026-07-23 NOZ1052 OSL → GDN Jul 23, 09:20 UTCJul 23, 10:25 UTC1h 5m
2026-07-23 NOZ933 CPH → OSL Jul 23, 07:45 UTCJul 23, 08:40 UTC55m
2026-07-23 NOZ932 OSL → CPH Jul 23, 06:15 UTCJul 23, 07:05 UTC50m
2026-07-22 NOZ1911 PRN → OSL Jul 22, 19:55 UTCJul 22, 22:45 UTC2h 50m
2026-07-22 NOZ1910 OSL → PRN Jul 22, 16:00 UTCJul 22, 18:35 UTC2h 35m
2026-07-22 NOZ3NG NCE → OSL Jul 22, 10:20 UTCJul 22, 11:35 UTC1h 15m
2026-07-21 NOZ89Z - Jul 21, 17:55 UTCJul 21, 22:30 UTC4h 35m
2026-07-21 NOZ90L OSL → LCA Jul 21, 12:35 UTCJul 21, 16:40 UTC4h 5m
2026-07-21 NOZ3NG NCE → OSL Jul 21, 08:50 UTCJul 21, 11:30 UTC2h 40m
2026-07-21 NOZ2WZ OSL → NCE Jul 21, 05:15 UTCJul 21, 07:40 UTC2h 25m
2026-07-20 NOZ87G - Jul 20, 21:40 UTCJul 21, 00:25 UTC2h 44m
2026-07-20 NOZ72C - Jul 20, 17:15 UTCJul 20, 19:50 UTC2h 35m
2026-07-20 NOZ1719 - Jul 20, 10:50 UTCJul 20, 13:55 UTC3h 5m
2026-07-20 NOZ1718 - Jul 20, 06:05 UTCJul 20, 09:25 UTC3h 20m
2026-07-19 NOZ827 ARN → OSL Jul 19, 19:50 UTCJul 19, 20:25 UTC35m
2026-07-19 NOZ826 OSL → ARN Jul 19, 18:20 UTCJul 19, 18:55 UTC35m
2026-07-19 NOZ3HC - Jul 19, 16:50 UTCJul 19, 17:30 UTC40m
2026-07-19 NOZ8WQ OSL → ARN Jul 19, 15:25 UTCJul 19, 16:05 UTC40m
2026-07-19 NOZ815 ARN → OSL Jul 19, 13:55 UTCJul 19, 14:35 UTC40m
2026-07-19 NOZ814 OSL → ARN Jul 19, 12:25 UTCJul 19, 13:05 UTC40m
2026-07-19 NOZ1347 MAN → OSL Jul 19, 09:45 UTCJul 19, 11:30 UTC1h 45m
2026-07-19 NOZ1346 - Jul 19, 06:45 UTCJul 19, 08:20 UTC1h 35m
2026-07-18 NOZ3PM TFS → OSL Jul 18, 17:30 UTCJul 18, 22:15 UTC4h 45m
2026-07-18 NOZ1702 OSL → TFS Jul 18, 10:30 UTCJul 18, 15:45 UTC5h 15m
2026-07-18 NOZ2EV VNO → OSL Jul 18, 07:45 UTCJul 18, 09:10 UTC1h 25m
2026-07-18 NOZ6PU OSL → VNO Jul 18, 05:20 UTCJul 18, 06:50 UTC1h 30m
2026-07-17 NOZ71PZ - Jul 17, 22:20 UTCJul 18, 01:15 UTC2h 55m
2026-07-17 NOZ7UV OSL → BOJ Jul 17, 18:10 UTCJul 17, 21:10 UTC3h 0m
2026-07-17 NOZ8UD CHQ → OSL Jul 17, 12:19 UTCJul 17, 16:19 UTC4h 0m

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

Mode-S 4ACA8D frequently asked

What is Mode-S code 4ACA8D?
4ACA8D is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RTM.
Where is Mode-S 4ACA8D registered?
Mode-S code 4ACA8D is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA8D 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 4ACA8D, octal 22545215, decimal 4,901,517.
What flights does 4ACA8D operate?
Mode-S 4ACA8D has broadcast 20 distinct callsigns, including NOZ91H, NSZ6BG, NOZ9CQ, NSZ5708, NOZ4RP.