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
No current signal · last broadcast 6h ago
Flights observed
435
Distinct callsigns
20
Country
SE
Last broadcast
6h ago

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 - 9 2026-07-14
NSZ6HT - 8 2026-07-08
NSZ83AH - 7 2026-07-13
NSZ5NE - 7 2026-06-30
NSZ56J Norwegian Air Sweden AOC 7 2026-06-30
NSZ4AW - 7 2026-07-13
NSZ2887 - 7 2026-07-08
NSZ2621 - 7 2026-07-14
NSZ2620 - 7 2026-07-14
NSZ2613 - 7 2026-07-06
NSZ4354 - 6 2026-07-14
NSZ4353 - 6 2026-07-14
NSZ2913 - 6 2026-07-08
NSZ2901 - 6 2026-07-12
NSZ2900 - 6 2026-07-12
NSZ9WP - 5 2026-07-07
NSZ4KR - 5 2026-06-21
NSZ44L - 5 2026-07-14
NSZ2953 - 5 2026-07-13
NSZ2952 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 NSZ4354 - Jul 14, 20:00 UTCJul 14, 21:40 UTC1h 40m
2026-07-14 NSZ4353 ARN → AMS Jul 14, 17:05 UTCJul 14, 18:40 UTC1h 35m
2026-07-14 NSZ44L - Jul 14, 15:05 UTCJul 14, 16:10 UTC1h 5m
2026-07-14 NSZ43E - Jul 14, 13:15 UTCJul 14, 14:15 UTC1h 0m
2026-07-14 NSZ2621 PRG → ARN Jul 14, 10:35 UTCJul 14, 12:10 UTC1h 35m
2026-07-14 NSZ2620 ARN → PRG Jul 14, 08:00 UTCJul 14, 09:35 UTC1h 35m
2026-07-14 NSZ6RD HEL → ARN Jul 14, 05:40 UTCJul 14, 06:25 UTC45m
2026-07-13 NSZ2953 - Jul 13, 19:30 UTCJul 13, 23:05 UTC3h 35m
2026-07-13 NSZ2952 - Jul 13, 14:40 UTCJul 13, 18:15 UTC3h 35m
2026-07-13 NSZ83AH - Jul 13, 09:45 UTCJul 13, 13:40 UTC3h 55m
2026-07-13 NSZ4AW - Jul 13, 03:50 UTCJul 13, 08:30 UTC4h 40m
2026-07-12 NSZ2771 LGW → HEL Jul 12, 18:40 UTCJul 12, 21:05 UTC2h 25m
2026-07-12 NSZ2770 HEL → LGW Jul 12, 14:35 UTCJul 12, 17:20 UTC2h 45m
2026-07-12 NSZ2901 BCN → HEL Jul 12, 09:15 UTCJul 12, 12:50 UTC3h 35m
2026-07-12 NSZ2900 HEL → BCN Jul 12, 04:15 UTCJul 12, 07:45 UTC3h 30m
2026-07-11 NSZ2827 - Jul 11, 16:55 UTCJul 11, 19:45 UTC2h 50m
2026-07-11 NSZ2826 - Jul 11, 13:00 UTCJul 11, 15:35 UTC2h 35m
2026-07-11 NSZ2891 - Jul 11, 08:10 UTCJul 11, 11:45 UTC3h 35m
2026-07-11 NSZ2890 - Jul 11, 03:10 UTCJul 11, 06:55 UTC3h 45m
2026-07-10 NSZ2847 - Jul 10, 18:25 UTCJul 10, 20:55 UTC2h 30m
2026-07-10 NSZ2846 - Jul 10, 14:50 UTCJul 10, 17:10 UTC2h 20m
2026-07-10 NSZ83AH - Jul 10, 09:25 UTCJul 10, 13:40 UTC4h 15m
2026-07-10 NSZ4AW - Jul 10, 03:45 UTCJul 10, 08:10 UTC4h 25m
2026-07-09 NSZ1GT - Jul 9, 20:30 UTCJul 9, 21:15 UTC45m
2026-07-09 NSZ2FU - Jul 9, 19:00 UTCJul 9, 19:40 UTC40m
2026-07-09 NSZ2617 ARN → HEL Jul 9, 17:35 UTCJul 9, 18:15 UTC40m
2026-07-09 NSZ2616 HEL → ARN Jul 9, 15:55 UTCJul 9, 16:40 UTC45m
2026-07-09 NSZ8YC NCE → HEL Jul 9, 11:40 UTCJul 9, 14:45 UTC3h 5m
2026-07-09 NSZ2TH HEL → NCE Jul 9, 07:30 UTCJul 9, 10:30 UTC3h 0m
2026-07-09 NSZ23Y ARN → HEL Jul 9, 05:50 UTCJul 9, 06:30 UTC40m
2026-07-09 NSZ2602 HEL → ARN Jul 9, 04:10 UTCJul 9, 04:55 UTC45m
2026-07-08 NSZ2887 - Jul 8, 18:20 UTCJul 8, 22:45 UTC4h 25m
2026-07-08 NSZ6HT - Jul 8, 12:45 UTCJul 8, 17:00 UTC4h 15m
2026-07-08 NSZ8YC NCE → HEL Jul 8, 08:30 UTCJul 8, 11:40 UTC3h 10m
2026-07-08 NSZ2TH HEL → NCE Jul 8, 04:15 UTCJul 8, 07:20 UTC3h 5m
2026-07-08 NSZ2913 HEL → HEL Jul 8, 00:05 UTCJul 8, 00:10 UTC5m
2026-07-07 NSZ2913 - Jul 7, 20:05 UTCJul 7, 22:55 UTC2h 50m
2026-07-07 NSZ9WP HEL → ALC Jul 7, 15:10 UTCJul 7, 19:15 UTC4h 5m
2026-07-07 NSZ2893 - Jul 7, 10:20 UTCJul 7, 14:05 UTC3h 45m
2026-07-07 NSZ2892 - Jul 7, 05:00 UTCJul 7, 08:45 UTC3h 45m
2026-07-06 NSZ2863 - Jul 6, 18:20 UTCJul 6, 21:00 UTC2h 40m
2026-07-06 NSZ2862 HEL → OTP Jul 6, 14:50 UTCJul 6, 17:10 UTC2h 20m
2026-07-06 NSZ2613 ARN → HEL Jul 6, 12:55 UTCJul 6, 13:40 UTC45m
2026-07-06 NSZ2621 PRG → ARN Jul 6, 10:20 UTCJul 6, 12:00 UTC1h 40m
2026-07-06 NSZ2620 ARN → PRG Jul 6, 07:30 UTCJul 6, 09:05 UTC1h 35m
2026-07-06 NSZ6RD HEL → ARN Jul 6, 05:40 UTCJul 6, 06:25 UTC45m
2026-07-05 NSZ2771 - Jul 5, 18:55 UTCJul 5, 21:20 UTC2h 25m
2026-07-05 NSZ2770 HEL → LGW Jul 5, 14:50 UTCJul 5, 17:30 UTC2h 40m
2026-07-05 NSZ2901 BCN → HEL Jul 5, 09:35 UTCJul 5, 13:15 UTC3h 40m
2026-07-05 NSZ2900 HEL → BCN Jul 5, 04:10 UTCJul 5, 07:35 UTC3h 25m

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?
No active broadcast right now. Last signal was 6h ago.
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, NSZ6HT, NSZ83AH, NSZ5NE, NSZ56J.