Apparatus

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sensors Mode-S transponder

4AC9C5

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-RNE · BOEING 737 MAX 8

Hex
4AC9C5
Octal
22544705
Decimal
4,901,317
Country
SE
Tail
SE-RNE
Type
B38M
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
416
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 4AC9C5.

Country allocation

The ICAO 24-bit address 4AC9C5 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
BLX633 TUIfly Nordic 11 2026-07-20
BLX496 TUIfly Nordic 11 2026-07-22
BLX495 TUIfly Nordic 10 2026-07-22
BLX9134 - 8 2026-07-21
BLX690 TUIfly Nordic 8 2026-07-25
BLX634 TUIfly Nordic 8 2026-07-20
BLX623 TUIfly Nordic 8 2026-07-25
BLX612 TUIfly Nordic 8 2026-07-26
BLX538 TUIfly Nordic 8 2026-07-24
BLX537 TUIfly Nordic 8 2026-07-24
BLX689 TUIfly Nordic 7 2026-07-25
BLX624 TUIfly Nordic 7 2026-07-25
BLX611 TUIfly Nordic 7 2026-07-26
BLX574 TUIfly Nordic 7 2026-07-21
BLX573 TUIfly Nordic 7 2026-07-21
BLX364 TUIfly Nordic 7 2026-07-21
BLX363 TUIfly Nordic 7 2026-07-21
BLX327 TUIfly Nordic 7 2026-07-24
BLX524 TUIfly Nordic 6 2026-07-22
BLX523 - 6 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BLX176 AYT → OSL Jul 26, 20:15 UTCJul 26, 21:15 UTC1h 0m
2026-07-26 BLX175 ARN → AHO Jul 26, 16:00 UTCJul 26, 18:55 UTC2h 55m
2026-07-26 BLX612 CHQ → ARN Jul 26, 10:50 UTCJul 26, 14:30 UTC3h 40m
2026-07-26 BLX611 ARN → CHQ Jul 26, 05:15 UTCJul 26, 08:30 UTC3h 16m
2026-07-25 BLX624 LCA → ARN Jul 25, 20:35 UTCJul 26, 00:45 UTC4h 10m
2026-07-25 BLX623 ARN → LCA Jul 25, 15:05 UTCJul 25, 18:55 UTC3h 50m
2026-07-25 BLX690 AYT → ARN Jul 25, 09:45 UTCJul 25, 13:35 UTC3h 50m
2026-07-25 BLX689 ARN → AYT Jul 25, 04:35 UTCJul 25, 07:50 UTC3h 15m
2026-07-24 BLX538 RHO → ARN Jul 24, 22:40 UTCJul 25, 02:35 UTC3h 55m
2026-07-24 BLX537 ARN → RHO Jul 24, 17:15 UTCJul 24, 20:40 UTC3h 25m
2026-07-24 BLX328 KGS → ARN Jul 24, 12:15 UTCJul 24, 15:55 UTC3h 40m
2026-07-24 BLX327 ARN → KGS Jul 24, 07:10 UTCJul 24, 10:30 UTC3h 20m
2026-07-23 BLX204 SUF → ARN Jul 23, 21:35 UTCJul 24, 00:45 UTC3h 10m
2026-07-23 BLX203 ARN → SUF Jul 23, 17:10 UTCJul 23, 20:05 UTC2h 55m
2026-07-23 BLX9204 - Jul 23, 14:35 UTCJul 23, 15:25 UTC50m
2026-07-23 BLX314 CHQ → GOT Jul 23, 09:55 UTCJul 23, 13:30 UTC3h 35m
2026-07-23 BLX313 GOT → CHQ Jul 23, 04:55 UTCJul 23, 08:10 UTC3h 15m
2026-07-22 BLX496 RHO → GOT Jul 22, 19:35 UTCJul 22, 23:05 UTC3h 30m
2026-07-22 BLX495 GOT → RHO Jul 22, 14:10 UTCJul 22, 17:35 UTC3h 25m
2026-07-22 BLX524 AYT → GOT Jul 22, 05:00 UTCJul 22, 12:10 UTC7h 10m
2026-07-21 BLX364 RHO → HEL Jul 21, 21:40 UTCJul 22, 01:15 UTC3h 35m
2026-07-21 BLX363 GOT → CHQ Jul 21, 17:15 UTCJul 21, 20:30 UTC3h 15m
2026-07-21 BLX9134 - Jul 21, 14:40 UTCJul 21, 15:20 UTC40m
2026-07-21 BLX574 SMI → ARN Jul 21, 09:55 UTCJul 21, 13:15 UTC3h 20m
2026-07-21 BLX573 ARN → SMI Jul 21, 05:15 UTCJul 21, 08:30 UTC3h 15m
2026-07-20 BLX162 PMI → CPH Jul 20, 20:00 UTCJul 20, 22:40 UTC2h 40m
2026-07-20 BLX161 CPH → PMI Jul 20, 16:00 UTCJul 20, 18:55 UTC2h 55m
2026-07-20 BLX634 LCA → ARN Jul 20, 10:05 UTCJul 20, 14:30 UTC4h 25m
2026-07-20 BLX633 ARN → LCA Jul 20, 04:30 UTCJul 20, 08:35 UTC4h 5m
2026-07-19 BLX254 AYT → ARN Jul 19, 21:35 UTCJul 20, 01:05 UTC3h 30m
2026-07-19 BLX7AH ARN → AYT Jul 19, 16:25 UTCJul 19, 20:10 UTC3h 45m
2026-07-19 BLX564 SID → HEL Jul 19, 10:45 UTCJul 19, 13:55 UTC3h 10m
2026-07-19 BLX563 ARN → AYT Jul 19, 05:30 UTCJul 19, 08:50 UTC3h 20m
2026-07-18 BLX624 LCA → ARN Jul 18, 20:40 UTCJul 19, 00:45 UTC4h 5m
2026-07-18 BLX623 ARN → LCA Jul 18, 15:15 UTCJul 18, 19:15 UTC4h 0m
2026-07-18 BLX690 AYT → ARN Jul 18, 09:50 UTCJul 18, 13:30 UTC3h 40m
2026-07-18 BLX689 ARN → AYT Jul 18, 04:40 UTCJul 18, 08:20 UTC3h 40m
2026-07-17 BLX538 RHO → ARN Jul 17, 21:15 UTCJul 18, 01:05 UTC3h 50m
2026-07-17 BLX537 ARN → RHO Jul 17, 16:10 UTCJul 17, 19:45 UTC3h 35m
2026-07-17 BLX328 KGS → ARN Jul 17, 10:44 UTCJul 17, 14:20 UTC3h 35m
2026-07-17 BLX327 ARN → KGS Jul 17, 05:25 UTCJul 17, 08:54 UTC3h 30m
2026-07-16 BLX8BV - Jul 16, 20:35 UTCJul 17, 00:10 UTC3h 35m
2026-07-16 BLX435 - Jul 16, 15:25 UTCJul 16, 18:44 UTC3h 20m
2026-07-16 BLX464 RHO → ARN Jul 16, 10:10 UTCJul 16, 13:54 UTC3h 45m
2026-07-16 BLX463 ARN → RHO Jul 16, 05:00 UTCJul 16, 08:35 UTC3h 35m
2026-07-15 BLX374 - Jul 15, 20:05 UTCJul 15, 23:40 UTC3h 35m
2026-07-15 BLX373 ARN → KGS Jul 15, 14:30 UTCJul 15, 18:00 UTC3h 30m
2026-07-15 BLX378 - Jul 15, 09:35 UTCJul 15, 12:55 UTC3h 20m
2026-07-15 BLX377 - Jul 15, 04:25 UTCJul 15, 07:40 UTC3h 15m
2026-07-14 BLX134 - Jul 14, 20:45 UTCJul 15, 00:30 UTC3h 44m

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

Mode-S 4AC9C5 frequently asked

What is Mode-S code 4AC9C5?
4AC9C5 is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-RNE.
Where is Mode-S 4AC9C5 registered?
Mode-S code 4AC9C5 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AC9C5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AC9C5, octal 22544705, decimal 4,901,317.
What flights does 4AC9C5 operate?
Mode-S 4AC9C5 has broadcast 20 distinct callsigns, including BLX633, BLX496, BLX495, BLX9134, BLX690.