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
Broadcasting now · callsign NOZ98X · 37,000 ft
Flights observed
247
Distinct callsigns
20
Country
SE
Last broadcast
38m ago

Current position

4ACA8D is currently broadcasting. Map zoomed to live position.

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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 NOZ98X AES → ALC May 30, 13:00 UTCMay 30, 15:15 UTC2h 15m
2026-05-30 NOZ408 OSL → AES May 30, 11:05 UTCMay 30, 11:35 UTC30m
2026-05-30 NOZ4TL KRK → OSL May 30, 08:00 UTCMay 30, 09:50 UTC1h 50m
2026-05-30 NOZ4BJ OSL → KRK May 30, 05:20 UTCMay 30, 06:55 UTC1h 35m
2026-05-29 NOZ8WF BLL → BLL May 29, 19:40 UTCMay 29, 20:30 UTC50m
2026-05-29 NOZ992 OSL → BLL May 29, 18:15 UTCMay 29, 19:05 UTC50m
2026-05-29 NOZ383 TOS → OSL May 29, 15:50 UTCMay 29, 17:20 UTC1h 30m
2026-05-29 NOZ378 OSL → TOS May 29, 13:20 UTCMay 29, 14:40 UTC1h 20m
2026-05-29 NOZ1495 CDG → OSL May 29, 10:15 UTCMay 29, 12:20 UTC2h 5m
2026-05-29 NOZ1494 OSL → CDG May 29, 06:55 UTCMay 29, 08:55 UTC2h 0m
2026-05-29 NOZ31EZ BDU → OSL May 29, 04:35 UTCMay 29, 05:55 UTC1h 20m
2026-05-28 NOZ36S OSL → BDU May 28, 18:50 UTCMay 28, 20:20 UTC1h 30m
2026-05-28 NOZ7EU BDU → OSL May 28, 16:00 UTCMay 28, 17:25 UTC1h 25m
2026-05-28 NOZ34T OSL → BDU May 28, 13:35 UTCMay 28, 15:05 UTC1h 30m
2026-05-28 NOZ9HZ HEL → OSL May 28, 11:15 UTCMay 28, 12:25 UTC1h 10m
2026-05-28 NOZ1190 OSL → HEL May 28, 09:20 UTCMay 28, 10:30 UTC1h 10m
2026-05-28 NOZ329 TOS → OSL May 28, 06:25 UTCMay 28, 07:50 UTC1h 25m
2026-05-27 NOZ328 TOS → ALF May 27, 18:00 UTCMay 27, 19:25 UTC1h 25m
2026-05-27 NOZ641 BGO → OSL May 27, 16:25 UTCMay 27, 17:10 UTC45m
2026-05-27 NOZ2UC OSL → BGO May 27, 15:15 UTCMay 27, 15:55 UTC40m
2026-05-27 NOZ1261 AYT → OSL May 27, 09:45 UTCMay 27, 13:55 UTC4h 10m
2026-05-27 NOZ1260 OSL → AYT May 27, 04:55 UTCMay 27, 08:35 UTC3h 41m
2026-05-26 NOZ23Y FAO → OSL May 26, 17:50 UTCMay 26, 21:25 UTC3h 35m
2026-05-26 NOZ22R OSL → TFS May 26, 12:40 UTCMay 26, 16:45 UTC4h 5m
2026-05-26 NOZ9KP OSL → OSL May 26, 09:40 UTCMay 26, 11:05 UTC1h 25m
2026-05-26 NOZ30BF OSL → OSL May 26, 07:19 UTCMay 26, 08:39 UTC1h 20m
2026-05-26 NOZ21M MOL → OSL May 26, 05:00 UTCMay 26, 05:30 UTC30m
2026-05-25 NOZ436 OSL → MOL May 25, 18:15 UTCMay 25, 18:45 UTC30m
2026-05-25 NOZ641 BGO → OSL May 25, 16:45 UTCMay 25, 17:20 UTC35m
2026-05-25 NOZ2UC OSL → BGO May 25, 15:10 UTCMay 25, 15:55 UTC45m
2026-05-25 NOZ27GE HAM → OSL May 25, 12:55 UTCMay 25, 14:05 UTC1h 10m
2026-05-25 NOZ26F OSL → HAM May 25, 10:40 UTCMay 25, 11:50 UTC1h 10m
2026-05-25 NOZ345 BOO → OSL May 25, 08:45 UTCMay 25, 09:50 UTC1h 5m
2026-05-25 NOZ4RZ OSL → BOO May 25, 06:45 UTCMay 25, 07:55 UTC1h 10m
2026-05-24 NOZ1313 LGW → OSL May 24, 20:20 UTCMay 24, 21:50 UTC1h 30m
2026-05-24 NOZ31F OSL → LGW May 24, 17:10 UTCMay 24, 19:10 UTC2h 0m
2026-05-24 NOZ1VE LGW → OSL May 24, 14:30 UTCMay 24, 16:10 UTC1h 40m
2026-05-24 NOZ36C OSL → LGW May 24, 11:20 UTCMay 24, 13:20 UTC2h 0m
2026-05-24 NOZ33B LGW → OSL May 24, 08:35 UTCMay 24, 10:20 UTC1h 45m
2026-05-24 NOZ32A OSL → LGW May 24, 05:20 UTCMay 24, 07:20 UTC2h 0m
2026-05-23 NOZ3BW AGP → OSL May 23, 18:00 UTCMay 23, 21:45 UTC3h 45m
2026-05-23 NOZ1802 OSL → AGP May 23, 13:05 UTCMay 23, 16:55 UTC3h 50m
2026-05-23 NOZ523 SVG → OSL May 23, 05:30 UTCMay 23, 06:05 UTC35m
2026-05-22 NOZ1487 CDG → SVG May 22, 20:30 UTCMay 22, 21:40 UTC1h 10m
2026-05-22 NOZ1486 SVG → CDG May 22, 17:45 UTCMay 22, 19:20 UTC1h 35m
2026-05-22 NOZ971 CPH → SVG May 22, 15:55 UTCMay 22, 16:35 UTC40m
2026-05-22 NOZ970 SVG → CPH May 22, 14:00 UTCMay 22, 14:50 UTC50m
2026-05-22 NOZ5ZP - May 22, 11:35 UTCMay 22, 12:50 UTC1h 15m
2026-05-22 NOZ4DE SVG → LGW May 22, 08:45 UTCMay 22, 10:25 UTC1h 40m
2026-05-22 NOZ526 OSL → SVG May 22, 07:20 UTCMay 22, 07:55 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-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?
Yes. Mode-S 4ACA8D is currently airborne.
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 NSZ6BG, NOZ91H, NSZ5708, NOZ9CQ, NOZ1261.