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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 11h ago
Flights observed
362
Distinct callsigns
20
Country
SE
Last broadcast
11h ago

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 - 10 2026-07-13
BLX496 - 10 2026-07-08
BLX495 - 9 2026-07-08
BLX9134 - 7 2026-07-07
BLX634 - 7 2026-07-13
BLX612 - 7 2026-07-05
BLX690 - 6 2026-07-11
BLX623 - 6 2026-07-11
BLX611 - 6 2026-07-05
BLX574 - 6 2026-07-07
BLX573 - 6 2026-07-07
BLX538 - 6 2026-07-03
BLX537 - 6 2026-07-03
BLX523 - 6 2026-07-08
BLX423 TUIfly Nordic 6 2026-05-18
BLX364 - 6 2026-07-07
BLX363 - 6 2026-07-07
BLX131 - 6 2026-06-27
BLX8HC - 5 2026-07-10
BLX70Y - 5 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 BLX634 LCA → ARN Jul 13, 10:25 UTCJul 13, 14:30 UTC4h 5m
2026-07-13 BLX633 - Jul 13, 04:35 UTCJul 13, 08:40 UTC4h 5m
2026-07-12 BLX722 - Jul 12, 21:15 UTCJul 13, 00:30 UTC3h 15m
2026-07-12 BLX721 - Jul 12, 16:25 UTCJul 12, 19:50 UTC3h 25m
2026-07-12 BLX564 - Jul 12, 10:25 UTCJul 12, 13:45 UTC3h 20m
2026-07-12 BLX563 - Jul 12, 05:40 UTCJul 12, 08:55 UTC3h 15m
2026-07-11 BLX623 - Jul 11, 15:10 UTCJul 11, 19:10 UTC4h 0m
2026-07-11 BLX690 RHO → ARN Jul 11, 09:50 UTCJul 11, 13:30 UTC3h 40m
2026-07-11 BLX689 ARN → RHO Jul 11, 04:45 UTCJul 11, 08:15 UTC3h 30m
2026-07-10 BLX8HC - Jul 10, 18:45 UTCJul 10, 23:00 UTC4h 15m
2026-07-10 BLX3BH - Jul 10, 13:30 UTCJul 10, 17:25 UTC3h 55m
2026-07-10 BLX8HY - Jul 10, 08:55 UTCJul 10, 11:20 UTC2h 25m
2026-07-10 BLX173 - Jul 10, 04:55 UTCJul 10, 06:55 UTC2h 0m
2026-07-09 BLX204 - Jul 9, 21:40 UTCJul 10, 01:00 UTC3h 20m
2026-07-09 BLX203 - Jul 9, 17:55 UTCJul 9, 20:35 UTC2h 40m
2026-07-09 BLX9204 - Jul 9, 15:50 UTCJul 9, 16:30 UTC40m
2026-07-09 BLX314 - Jul 9, 11:00 UTCJul 9, 14:45 UTC3h 45m
2026-07-09 BLX313 - Jul 9, 05:10 UTCJul 9, 08:20 UTC3h 10m
2026-07-08 BLX496 - Jul 8, 19:05 UTCJul 8, 22:50 UTC3h 45m
2026-07-08 BLX495 - Jul 8, 14:10 UTCJul 8, 17:25 UTC3h 15m
2026-07-08 BLX524 - Jul 8, 08:45 UTCJul 8, 11:35 UTC2h 50m
2026-07-08 BLX523 - Jul 8, 04:55 UTCJul 8, 07:15 UTC2h 20m
2026-07-07 BLX364 - Jul 7, 21:30 UTCJul 8, 01:05 UTC3h 35m
2026-07-07 BLX363 - Jul 7, 16:45 UTCJul 7, 20:00 UTC3h 15m
2026-07-07 BLX9134 - Jul 7, 14:55 UTCJul 7, 15:40 UTC45m
2026-07-07 BLX574 - Jul 7, 10:20 UTCJul 7, 13:45 UTC3h 25m
2026-07-07 BLX573 - Jul 7, 04:45 UTCJul 7, 08:00 UTC3h 15m
2026-07-06 BLX282 PMO → ARN Jul 6, 20:25 UTCJul 6, 23:45 UTC3h 20m
2026-07-06 BLX6BK ARN → PMO Jul 6, 13:35 UTCJul 6, 16:45 UTC3h 10m
2026-07-05 BLX176 AHO → ARN Jul 5, 20:45 UTCJul 5, 23:45 UTC3h 0m
2026-07-05 BLX175 ARN → AHO Jul 5, 16:30 UTCJul 5, 19:20 UTC2h 50m
2026-07-05 BLX612 - Jul 5, 11:10 UTCJul 5, 14:55 UTC3h 45m
2026-07-05 BLX611 - Jul 5, 06:20 UTCJul 5, 09:40 UTC3h 20m
2026-07-04 BLX624 - Jul 4, 21:30 UTCJul 5, 01:45 UTC4h 15m
2026-07-04 BLX623 ARN → AMM Jul 4, 16:15 UTCJul 4, 20:05 UTC3h 50m
2026-07-04 BLX690 - Jul 4, 14:20 UTCJul 4, 14:40 UTC20m
2026-07-04 BLX690 - Jul 4, 10:55 UTCJul 4, 13:40 UTC2h 45m
2026-07-04 BLX689 ARN → RHO Jul 4, 05:30 UTCJul 4, 08:55 UTC3h 25m
2026-07-03 BLX538 RHO → ARN Jul 3, 21:30 UTCJul 4, 01:10 UTC3h 40m
2026-07-03 BLX537 ARN → RHO Jul 3, 16:05 UTCJul 3, 19:40 UTC3h 35m
2026-07-03 BLX328 KGS → ARN Jul 3, 11:10 UTCJul 3, 14:35 UTC3h 25m
2026-07-03 BLX327 ARN → KGS Jul 3, 06:10 UTCJul 3, 09:50 UTC3h 40m
2026-07-02 BLX204 - Jul 2, 21:30 UTCJul 3, 00:30 UTC3h 0m
2026-07-02 BLX203 - Jul 2, 17:05 UTCJul 2, 20:15 UTC3h 10m
2026-07-02 BLX9204 - Jul 2, 15:00 UTCJul 2, 15:40 UTC40m
2026-07-02 BLX314 - Jul 2, 09:55 UTCJul 2, 13:25 UTC3h 30m
2026-07-02 BLX313 GOT → RHO Jul 2, 04:50 UTCJul 2, 08:20 UTC3h 30m
2026-07-01 BLX496 - Jul 1, 19:25 UTCJul 1, 22:45 UTC3h 20m
2026-07-01 BLX495 - Jul 1, 14:25 UTCJul 1, 18:05 UTC3h 40m
2026-07-01 BLX524 - Jul 1, 08:55 UTCJul 1, 11:25 UTC2h 30m

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 11h ago.
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, BLX634.