Apparatus

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sensors Mode-S transponder

4ACA89

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RTI · BOEING 737 MAX 8

Hex
4ACA89
Octal
22545211
Decimal
4,901,513
Country
SE
Tail
SE-RTI
Type
B38M
Transponder active on ground
Flights observed
498
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S 4ACA89.

Country allocation

The ICAO 24-bit address 4ACA89 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
NSZ6RD Norwegian Air Sweden AOC 11 2026-07-23
NSZ2621 Norwegian Air Sweden AOC 9 2026-07-23
NSZ2620 Norwegian Air Sweden AOC 9 2026-07-23
NSZ2613 Norwegian Air Sweden AOC 9 2026-07-26
NSZ6HT - 8 2026-07-08
NSZ5NE Norwegian Air Sweden AOC 8 2026-07-18
NSZ56J - 8 2026-07-18
NSZ83AH - 7 2026-07-13
NSZ4AW - 7 2026-07-13
NSZ2913 Norwegian Air Sweden AOC 7 2026-07-22
NSZ2887 - 7 2026-07-08
NSZ9WP Norwegian Air Sweden AOC 6 2026-07-22
NSZ44L Norwegian Air Sweden AOC 6 2026-07-23
NSZ4354 - 6 2026-07-14
NSZ4353 - 6 2026-07-14
NSZ2901 - 6 2026-07-12
NSZ2900 - 6 2026-07-12
NSZ60X Norwegian Air Sweden AOC 5 2026-07-24
NSZ59T Norwegian Air Sweden AOC 5 2026-07-24
NSZ4KR - 5 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NSZ2941 BGY → HEL Jul 26, 18:50 UTCJul 26, 21:25 UTC2h 35m
2026-07-26 NSZ2940 HEL → BGY Jul 26, 14:40 UTCJul 26, 17:20 UTC2h 40m
2026-07-26 NSZ2613 ARN → HEL Jul 26, 12:55 UTCJul 26, 13:35 UTC40m
2026-07-26 NSZ4312 CDG → ARN Jul 26, 09:00 UTCJul 26, 11:00 UTC2h 0m
2026-07-26 NSZ3KB ARN → CDG Jul 26, 05:30 UTCJul 26, 07:45 UTC2h 16m
2026-07-25 NSZ4382 RHO → ARN Jul 25, 22:05 UTCJul 26, 01:50 UTC3h 45m
2026-07-25 NSZ4381 ARN → RHO Jul 25, 17:20 UTCJul 25, 20:45 UTC3h 25m
2026-07-25 NSZ4156 CPH → ARN Jul 25, 15:15 UTCJul 25, 16:10 UTC55m
2026-07-25 NSZ4155 ARN → CPH Jul 25, 13:20 UTCJul 25, 14:20 UTC1h 0m
2026-07-25 NSZ5YD BIO → ARN Jul 25, 09:15 UTCJul 25, 12:05 UTC2h 50m
2026-07-25 NSZ4257 ARN → BIO Jul 25, 04:55 UTCJul 25, 07:50 UTC2h 55m
2026-07-24 NSZ60X LGW → ARN Jul 24, 19:05 UTCJul 24, 21:05 UTC2h 0m
2026-07-24 NSZ59T ARN → LGW Jul 24, 15:45 UTCJul 24, 17:55 UTC2h 10m
2026-07-24 NSZ6LA LGW → ARN Jul 24, 12:30 UTCJul 24, 14:35 UTC2h 5m
2026-07-24 NSZ5WU ARN → LGW Jul 24, 09:00 UTCJul 24, 11:10 UTC2h 10m
2026-07-24 NSZ4004 UME → ARN Jul 24, 07:00 UTCJul 24, 07:40 UTC40m
2026-07-24 NSZ9UA ARN → UME Jul 24, 05:30 UTCJul 24, 06:10 UTC40m
2026-07-23 NSZ46M LLA → ARN Jul 23, 19:05 UTCJul 23, 19:55 UTC50m
2026-07-23 NSZ7DP ARN → LLA Jul 23, 17:10 UTCJul 23, 18:15 UTC1h 5m
2026-07-23 NSZ44L LLA → ARN Jul 23, 15:20 UTCJul 23, 16:15 UTC55m
2026-07-23 NSZ43E ARN → LLA Jul 23, 13:30 UTCJul 23, 14:25 UTC55m
2026-07-23 NSZ2621 PRG → ARN Jul 23, 10:20 UTCJul 23, 11:55 UTC1h 35m
2026-07-23 NSZ2620 ARN → PRG Jul 23, 07:40 UTCJul 23, 09:10 UTC1h 30m
2026-07-23 NSZ6RD HEL → ARN Jul 23, 05:40 UTCJul 23, 06:25 UTC45m
2026-07-22 NSZ2913 ALC → HEL Jul 22, 18:30 UTCJul 22, 22:30 UTC4h 0m
2026-07-22 NSZ9WP HEL → ALC Jul 22, 13:10 UTCJul 22, 17:20 UTC4h 10m
2026-07-22 NSZ2845 SPU → HEL Jul 22, 10:20 UTCJul 22, 11:55 UTC1h 35m
2026-07-21 NSZ2941 BGY → HEL Jul 21, 18:35 UTCJul 21, 21:10 UTC2h 35m
2026-07-21 NSZ2940 HEL → BGY Jul 21, 14:40 UTCJul 21, 17:15 UTC2h 35m
2026-07-21 NSZ2613 ARN → HEL Jul 21, 12:50 UTCJul 21, 13:30 UTC40m
2026-07-21 NSZ2621 PRG → ARN Jul 21, 10:15 UTCJul 21, 11:50 UTC1h 35m
2026-07-21 NSZ2620 ARN → PRG Jul 21, 07:45 UTCJul 21, 09:20 UTC1h 35m
2026-07-21 NSZ6RD HEL → ARN Jul 21, 05:30 UTCJul 21, 06:15 UTC45m
2026-07-20 NSZ26Q BOJ → HEL Jul 20, 23:05 UTCJul 20, 23:15 UTC10m
2026-07-20 NSZ26Q BOJ → HEL Jul 20, 20:40 UTCJul 20, 22:00 UTC1h 20m
2026-07-20 NSZ2856 HEL → BOJ Jul 20, 16:30 UTCJul 20, 19:25 UTC2h 55m
2026-07-20 NSZ2615 ARN → HEL Jul 20, 14:45 UTCJul 20, 15:30 UTC45m
2026-07-20 NSZ4508 BER → ARN Jul 20, 12:05 UTCJul 20, 13:20 UTC1h 15m
2026-07-20 NSZ4507 ARN → BER Jul 20, 09:50 UTCJul 20, 11:05 UTC1h 15m
2026-07-20 NSZ38K LLA → ARN Jul 20, 07:35 UTCJul 20, 08:40 UTC1h 5m
2026-07-20 NSZ35A - Jul 20, 05:45 UTCJul 20, 06:40 UTC55m
2026-07-19 NSZ278Y LIS → ARN Jul 19, 17:05 UTCJul 19, 20:45 UTC3h 40m
2026-07-19 NSZ2WK ARN → LIS Jul 19, 11:45 UTCJul 19, 15:50 UTC4h 5m
2026-07-19 NSZ2MP NCE → ARN Jul 19, 08:10 UTCJul 19, 10:40 UTC2h 30m
2026-07-19 NSZ3YT ARN → NCE Jul 19, 04:20 UTCJul 19, 07:10 UTC2h 50m
2026-07-18 NSZ4280 OPO → ARN Jul 18, 18:15 UTCJul 18, 21:30 UTC3h 15m
2026-07-18 NSZ4279 ARN → OPO Jul 18, 13:25 UTCJul 18, 17:05 UTC3h 40m
2026-07-18 NSZ56J - Jul 18, 09:25 UTCJul 18, 11:50 UTC2h 25m
2026-07-18 NSZ5NE ARN → FCO Jul 18, 05:05 UTCJul 18, 07:50 UTC2h 45m
2026-07-17 NSZ4360 - Jul 17, 19:55 UTCJul 17, 22:29 UTC2h 35m

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

Mode-S 4ACA89 frequently asked

What is Mode-S code 4ACA89?
4ACA89 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RTI.
Where is Mode-S 4ACA89 registered?
Mode-S code 4ACA89 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4ACA89 broadcasting right now?
Mode-S 4ACA89 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4ACA89, octal 22545211, decimal 4,901,513.
What flights does 4ACA89 operate?
Mode-S 4ACA89 has broadcast 20 distinct callsigns, including NSZ6RD, NSZ2621, NSZ2620, NSZ2613, NSZ6HT.