Apparatus

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sensors Mode-S transponder

4AB56F

ICAO 24-bit transponder address · allocated to Sweden

Currently assigned to SE-MKO · ATR-72-600

Hex
4AB56F
Octal
22532557
Decimal
4,896,111
Country
SE
Tail
SE-MKO
Type
AT76
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
634
Distinct callsigns
20
Country
SE
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 4AB56F.

Country allocation

The ICAO 24-bit address 4AB56F 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
SAS1396 Scandinavian Airlines System 12 2026-07-23
SAS85P - 11 2026-07-13
SAS1397 Scandinavian Airlines System 11 2026-07-23
SAS096 - 11 2026-07-13
SAS083 - 11 2026-07-07
SAS2728 - 10 2026-07-06
SAS2727 - 10 2026-07-06
SAS2135 Scandinavian Airlines System 10 2026-06-05
SAS2136 Scandinavian Airlines System 9 2026-06-04
SAS196 - 9 2026-07-07
SAS195 - 9 2026-07-07
SAS1668 - 9 2026-06-19
SAS758 - 8 2026-07-15
SAS40R Scandinavian Airlines System 8 2026-06-19
SAS2184 - 8 2026-07-13
SAS189 - 8 2026-07-13
SAS1398 - 8 2026-06-16
SAS1286 Scandinavian Airlines System 8 2026-07-26
SAS1285 Scandinavian Airlines System 8 2026-07-26
SAS1282 - 8 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SAS1273 CPH → AAR Jul 26, 21:30 UTCJul 26, 21:45 UTC15m
2026-07-26 SAS1204 AAL → CPH Jul 26, 18:00 UTCJul 26, 18:40 UTC40m
2026-07-26 SAS1203 CPH → AAL Jul 26, 16:40 UTCJul 26, 17:15 UTC35m
2026-07-26 SAS1210 AAL → CPH Jul 26, 15:20 UTCJul 26, 15:55 UTC35m
2026-07-26 SAS1215 CPH → AAL Jul 26, 13:55 UTCJul 26, 14:35 UTC40m
2026-07-26 SAS1286 BLL → CPH Jul 26, 11:30 UTCJul 26, 12:05 UTC35m
2026-07-26 SAS1285 CPH → BLL Jul 26, 10:05 UTCJul 26, 10:40 UTC35m
2026-07-26 SAS48P GOT → CPH Jul 26, 08:00 UTCJul 26, 08:40 UTC40m
2026-07-26 SAS434 CPH → GOT Jul 26, 06:30 UTCJul 26, 07:10 UTC41m
2026-07-25 SAS1680 BER → CPH Jul 25, 21:10 UTCJul 25, 22:10 UTC1h 0m
2026-07-25 SAS1679 CPH → BER Jul 25, 19:00 UTCJul 25, 19:55 UTC55m
2026-07-25 SAS768 PRG → CPH Jul 25, 12:55 UTCJul 25, 14:30 UTC1h 35m
2026-07-25 SAS767 CPH → PRG Jul 25, 10:35 UTCJul 25, 12:05 UTC1h 30m
2026-07-25 SAS1674 BER → CPH Jul 25, 08:25 UTCJul 25, 09:25 UTC1h 0m
2026-07-25 SAS1673 CPH → BER Jul 25, 06:20 UTCJul 25, 07:15 UTC55m
2026-07-24 SAS2752 WAW → CPH Jul 24, 17:55 UTCJul 24, 19:30 UTC1h 35m
2026-07-24 SAS2751 CPH → WAW Jul 24, 15:35 UTCJul 24, 17:05 UTC1h 30m
2026-07-24 SAS1869 SVG → CPH Jul 24, 13:20 UTCJul 24, 14:40 UTC1h 20m
2026-07-24 SAS1868 CPH → SVG Jul 24, 11:10 UTCJul 24, 12:35 UTC1h 25m
2026-07-24 SAS1630 DUS → CPH Jul 24, 08:45 UTCJul 24, 10:20 UTC1h 35m
2026-07-24 SAS1629 CPH → DUS Jul 24, 06:05 UTCJul 24, 07:25 UTC1h 20m
2026-07-23 SAS1260 AAR → CPH Jul 23, 17:50 UTCJul 23, 18:15 UTC25m
2026-07-23 SAS1259 CPH → AAR Jul 23, 16:50 UTCJul 23, 17:10 UTC20m
2026-07-23 SAS1286 BLL → CPH Jul 23, 15:20 UTCJul 23, 15:55 UTC35m
2026-07-23 SAS1285 CPH → BLL Jul 23, 14:05 UTCJul 23, 14:40 UTC35m
2026-07-23 SAS1397 TRF → CPH Jul 23, 12:05 UTCJul 23, 13:05 UTC1h 0m
2026-07-23 SAS1396 CPH → TRF Jul 23, 10:15 UTCJul 23, 11:15 UTC1h 0m
2026-07-23 SAS48P GOT → CPH Jul 23, 08:05 UTCJul 23, 08:40 UTC35m
2026-07-23 SAS71L ARN → GOT Jul 23, 06:15 UTCJul 23, 07:15 UTC1h 0m
2026-07-22 SAS1021 SFT → ARN Jul 22, 18:30 UTCJul 22, 19:45 UTC1h 15m
2026-07-22 SAS59K CPH → CDG Jul 22, 16:15 UTCJul 22, 17:30 UTC1h 15m
2026-07-22 SAS82T TLL → ARN Jul 22, 13:55 UTCJul 22, 15:00 UTC1h 5m
2026-07-22 SAS40L ARN → TLL Jul 22, 12:10 UTCJul 22, 13:05 UTC55m
2026-07-21 SAS126 - Jul 21, 15:50 UTCJul 21, 17:10 UTC1h 20m
2026-07-21 SAS121 ARN → MMX Jul 21, 13:50 UTCJul 21, 15:05 UTC1h 15m
2026-07-21 SAS061 OSD → ARN Jul 21, 11:25 UTCJul 21, 12:25 UTC1h 0m
2026-07-21 SAS072 ARN → OSD Jul 21, 09:30 UTCJul 21, 10:40 UTC1h 10m
2026-07-20 SAS80A GOT → ARN Jul 20, 08:20 UTCJul 20, 09:20 UTC1h 0m
2026-07-20 SAS434 CPH → GOT Jul 20, 06:40 UTCJul 20, 07:20 UTC40m
2026-07-20 SAS1280 BLL → CPH Jul 20, 04:25 UTCJul 20, 05:05 UTC40m
2026-07-19 SAS1289 CPH → BLL Jul 19, 21:15 UTCJul 19, 21:55 UTC40m
2026-07-19 SAS1879 - Jul 19, 18:20 UTCJul 19, 19:40 UTC1h 20m
2026-07-19 SAS1874 CPH → SVG Jul 19, 16:10 UTCJul 19, 17:30 UTC1h 20m
2026-07-19 SAS1678 BER → CPH Jul 19, 14:00 UTCJul 19, 15:00 UTC1h 0m
2026-07-19 SAS1677 CPH → BER Jul 19, 12:20 UTCJul 19, 13:15 UTC55m
2026-07-19 SAS1630 - Jul 19, 08:50 UTCJul 19, 10:20 UTC1h 30m
2026-07-19 SAS1629 CPH → DUS Jul 19, 06:20 UTCJul 19, 07:55 UTC1h 35m
2026-07-18 SAS768 PRG → CPH Jul 18, 13:00 UTCJul 18, 14:30 UTC1h 30m
2026-07-18 SAS767 - Jul 18, 10:40 UTCJul 18, 12:05 UTC1h 25m
2026-07-18 SAS1674 BER → CPH Jul 18, 08:45 UTCJul 18, 09:45 UTC1h 0m

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

Mode-S 4AB56F frequently asked

What is Mode-S code 4AB56F?
4AB56F is an ICAO 24-bit transponder address. Allocated to Sweden. Assigned to SE-MKO.
Where is Mode-S 4AB56F registered?
Mode-S code 4AB56F is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AB56F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AB56F, octal 22532557, decimal 4,896,111.
What flights does 4AB56F operate?
Mode-S 4AB56F has broadcast 20 distinct callsigns, including SAS1396, SAS85P, SAS1397, SAS096, SAS083.