Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

505CEB

ICAO 24-bit transponder address · allocated to Slovakia

Currently assigned to OM-GTK · BOEING 737-800

Hex
505CEB
Octal
24056353
Decimal
5,266,667
Country
SK
Tail
OM-GTK
Type
B738
No current signal · last broadcast 3h ago
Flights observed
251
Distinct callsigns
20
Country
SK
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 505CEB.

Country allocation

The ICAO 24-bit address 505CEB falls within the block assigned to Slovakia (SK) by ICAO Annex 10, Volume III. Every aircraft registered in Slovakia 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
TOM30D TUI Airways 9 2026-07-17
TOM2EH TUI Airways 9 2026-07-17
TOM9VJ - 8 2026-07-11
TOM9HC - 8 2026-07-13
TOM8JB - 8 2026-07-14
TOM6TN - 8 2026-07-16
TOM6LG - 8 2026-07-13
TOM6GL - 8 2026-07-13
TOM511 TUI Airways 8 2026-07-16
TOM510 - 8 2026-07-16
TOM40X - 8 2026-07-11
TOM30M - 8 2026-07-14
TOM2ND - 8 2026-07-13
TOM1JA - 8 2026-07-16
TOM8LX - 7 2026-07-15
TOM8BX - 7 2026-07-14
TOM6KY - 7 2026-07-03
TOM5HA - 7 2026-07-12
TOM5763 - 7 2026-07-12
TOM5762 - 7 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 TOM2YE HER → LGW Jul 17, 23:05 UTCJul 18, 02:35 UTC3h 30m
2026-07-17 TOM88K NCL → LPA Jul 17, 18:25 UTCJul 17, 21:39 UTC3h 15m
2026-07-17 TOM30D REU → BHX Jul 17, 12:10 UTCJul 17, 15:35 UTC3h 25m
2026-07-17 TOM2EH LGW → ZTH Jul 17, 07:35 UTCJul 17, 10:35 UTC3h 0m
2026-07-16 TOM511 DLM → LGW Jul 16, 20:25 UTCJul 17, 00:35 UTC4h 10m
2026-07-16 TOM510 LGW → AYT Jul 16, 14:40 UTCJul 16, 18:15 UTC3h 35m
2026-07-16 TOM1JA IBZ → LGW Jul 16, 10:55 UTCJul 16, 13:00 UTC2h 5m
2026-07-16 TOM6TN LGW → IBZ Jul 16, 07:25 UTCJul 16, 09:35 UTC2h 10m
2026-07-15 TOM8LX - Jul 15, 22:50 UTCJul 16, 00:45 UTC1h 55m
2026-07-15 TOM39T - Jul 15, 19:25 UTCJul 15, 21:30 UTC2h 5m
2026-07-14 TOM49L - Jul 14, 17:10 UTCJul 14, 20:25 UTC3h 15m
2026-07-14 TOM8BX - Jul 14, 13:00 UTCJul 14, 15:45 UTC2h 45m
2026-07-14 TOM30M - Jul 14, 08:45 UTCJul 14, 10:15 UTC1h 30m
2026-07-14 TOM8JB - Jul 14, 05:45 UTCJul 14, 07:15 UTC1h 30m
2026-07-13 TOM6GL - Jul 13, 20:40 UTCJul 13, 22:45 UTC2h 5m
2026-07-13 TOM6LG - Jul 13, 17:15 UTCJul 13, 19:05 UTC1h 50m
2026-07-13 TOM9HC - Jul 13, 11:05 UTCJul 13, 14:40 UTC3h 35m
2026-07-13 TOM2ND - Jul 13, 05:25 UTCJul 13, 09:15 UTC3h 50m
2026-07-12 TOM5763 RHO → LGW Jul 12, 20:25 UTCJul 13, 00:20 UTC3h 55m
2026-07-12 TOM5762 LGW → RHO Jul 12, 15:35 UTCJul 12, 19:10 UTC3h 35m
2026-07-12 TOM4CT - Jul 12, 11:01 UTCJul 12, 13:10 UTC2h 10m
2026-07-12 TOM5HA - Jul 12, 06:40 UTCJul 12, 09:20 UTC2h 40m
2026-07-11 TOM1NK PFO → LGW Jul 11, 19:05 UTCJul 11, 23:25 UTC4h 20m
2026-07-11 TOM37G - Jul 11, 13:35 UTCJul 11, 17:40 UTC4h 5m
2026-07-11 TOM9VJ - Jul 11, 09:55 UTCJul 11, 11:45 UTC1h 50m
2026-07-11 TOM40X LGW → MAH Jul 11, 06:35 UTCJul 11, 08:30 UTC1h 55m
2026-07-10 TOM2YE - Jul 10, 22:35 UTCJul 11, 02:05 UTC3h 30m
2026-07-10 TOM88K - Jul 10, 18:00 UTCJul 10, 21:10 UTC3h 10m
2026-07-10 TOM30D - Jul 10, 12:35 UTCJul 10, 15:50 UTC3h 15m
2026-07-10 TOM2EH - Jul 10, 08:15 UTCJul 10, 11:10 UTC2h 55m
2026-07-09 TOM511 - Jul 9, 19:45 UTCJul 9, 23:55 UTC4h 10m
2026-07-09 TOM510 - Jul 9, 14:20 UTCJul 9, 17:50 UTC3h 30m
2026-07-09 TOM1JA IBZ → LGW Jul 9, 10:20 UTCJul 9, 12:20 UTC2h 0m
2026-07-09 TOM6TN LGW → IBZ Jul 9, 07:10 UTCJul 9, 09:10 UTC2h 0m
2026-07-08 TOM8LX - Jul 8, 22:10 UTCJul 9, 00:05 UTC1h 55m
2026-07-08 TOM39T - Jul 8, 18:55 UTCJul 8, 20:40 UTC1h 45m
2026-07-08 TOM4DL - Jul 8, 12:35 UTCJul 8, 14:20 UTC1h 45m
2026-07-08 TOM4KY - Jul 8, 07:00 UTCJul 8, 10:55 UTC3h 55m
2026-07-07 TOM49L - Jul 7, 17:25 UTCJul 7, 20:35 UTC3h 10m
2026-07-07 TOM8BX - Jul 7, 12:55 UTCJul 7, 15:55 UTC3h 0m
2026-07-07 TOM30M - Jul 7, 08:45 UTCJul 7, 10:40 UTC1h 55m
2026-07-07 TOM8JB - Jul 7, 05:30 UTCJul 7, 06:55 UTC1h 25m
2026-07-06 TOM6GL - Jul 6, 20:05 UTCJul 6, 22:05 UTC2h 0m
2026-07-06 TOM6LG - Jul 6, 16:35 UTCJul 6, 18:20 UTC1h 45m
2026-07-06 TOM9HC - Jul 6, 10:45 UTCJul 6, 14:30 UTC3h 45m
2026-07-06 TOM2ND - Jul 6, 05:25 UTCJul 6, 09:05 UTC3h 40m
2026-07-05 TOM5763 RHO → LGW Jul 5, 19:35 UTCJul 5, 23:30 UTC3h 55m
2026-07-05 TOM5762 LGW → RHO Jul 5, 14:40 UTCJul 5, 18:10 UTC3h 30m
2026-07-05 TOM4CT HRG → BHX Jul 5, 10:25 UTCJul 5, 12:50 UTC2h 25m
2026-07-05 TOM5HA MAN → HER Jul 5, 06:35 UTCJul 5, 08:50 UTC2h 15m

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 OM-GTK page for operator, model, and routing details .

Mode-S 505CEB frequently asked

What is Mode-S code 505CEB?
505CEB is an ICAO 24-bit transponder address. Allocated to Slovakia. Assigned to OM-GTK.
Where is Mode-S 505CEB registered?
Mode-S code 505CEB is allocated to Slovakia (SK). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 505CEB broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 505CEB, octal 24056353, decimal 5,266,667.
What flights does 505CEB operate?
Mode-S 505CEB has broadcast 20 distinct callsigns, including TOM30D, TOM2EH, TOM9VJ, TOM9HC, TOM8JB.