Apparatus

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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 6h ago
Flights observed
78
Distinct callsigns
20
Country
SK
Last broadcast
6h 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
TRA91T Transavia Holland 2 2026-05-03
TRA7N Transavia Holland 2 2026-05-03
TRA084 Transavia Holland 2 2026-05-01
TOM9VJ TUI Airways 2 2026-05-30
TOM9HC TUI Airways 2 2026-06-01
TOM8JB TUI Airways 2 2026-06-02
TOM6LG TUI Airways 2 2026-06-01
TOM6KY TUI Airways 2 2026-05-29
TOM6GL TUI Airways 2 2026-06-01
TOM511 TUI Airways 2 2026-05-28
TOM510 TUI Airways 2 2026-05-28
TOM40X TUI Airways 2 2026-05-30
TOM37G TUI Airways 2 2026-05-30
TOM35J TUI Airways 2 2026-05-29
TOM30M TUI Airways 2 2026-06-02
TOM30D TUI Airways 2 2026-05-29
TOM2ND TUI Airways 2 2026-06-01
TOM2EH TUI Airways 2 2026-05-29
TOM1NK TUI Airways 2 2026-05-30
SEU8624 - 2 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 TOM49L HER → BHX Jun 2, 17:50 UTCJun 2, 20:50 UTC3h 0m
2026-06-02 TOM8BX MAN → CHQ Jun 2, 13:20 UTCJun 2, 16:20 UTC3h 0m
2026-06-02 TOM30M HER → BRS Jun 2, 09:00 UTCJun 2, 10:45 UTC1h 45m
2026-06-02 TOM8JB FAO → LGW Jun 2, 05:45 UTCJun 2, 07:15 UTC1h 30m
2026-06-01 TOM6GL MAH → MAN Jun 1, 20:50 UTCJun 1, 22:45 UTC1h 55m
2026-06-01 TOM6LG MAN → TFS Jun 1, 17:05 UTCJun 1, 19:00 UTC1h 55m
2026-06-01 TOM9HC CWL → PFO Jun 1, 10:40 UTCJun 1, 14:15 UTC3h 35m
2026-06-01 TOM2ND LGW → TFS Jun 1, 05:25 UTCJun 1, 09:05 UTC3h 40m
2026-05-31 TOM5763 RHO → LGW May 31, 22:20 UTCJun 1, 02:10 UTC3h 50m
2026-05-31 TOM5762 LGW → RHO May 31, 17:40 UTCMay 31, 21:10 UTC3h 30m
2026-05-31 TOM4CT HRG → BHX May 31, 11:10 UTCMay 31, 13:40 UTC2h 30m
2026-05-31 TOM5HA MAN → HER May 31, 08:25 UTCMay 31, 09:30 UTC1h 5m
2026-05-30 TOM1NK PFO → LGW May 30, 20:20 UTCMay 31, 00:45 UTC4h 25m
2026-05-30 TOM37G LGW → TFS May 30, 14:40 UTCMay 30, 18:40 UTC4h 0m
2026-05-30 TOM9VJ MAH → LGW May 30, 10:20 UTCMay 30, 12:20 UTC2h 0m
2026-05-30 TOM40X EDI → PFO May 30, 07:00 UTCMay 30, 09:00 UTC2h 0m
2026-05-29 TOM35J MAN → REU May 29, 22:45 UTCMay 30, 01:55 UTC3h 10m
2026-05-29 TOM6KY LGW → BOJ May 29, 18:15 UTCMay 29, 21:10 UTC2h 55m
2026-05-29 TOM30D REU → BHX May 29, 12:35 UTCMay 29, 15:45 UTC3h 10m
2026-05-29 TOM2EH LGW → ZTH May 29, 07:35 UTCMay 29, 10:35 UTC3h 0m
2026-05-28 TOM511 DLM → LGW May 28, 21:00 UTCMay 29, 01:00 UTC4h 0m
2026-05-28 TOM510 LGW → DLM May 28, 15:40 UTCMay 28, 19:20 UTC3h 40m
2026-05-28 TOM1JA INN → MAN May 28, 11:45 UTCMay 28, 14:05 UTC2h 20m
2026-05-28 TOM6TN NCL → ZTH May 28, 07:40 UTCMay 28, 09:30 UTC1h 50m
2026-05-27 TOM8LX MAN → NCL May 27, 22:05 UTCMay 28, 00:10 UTC2h 5m
2026-05-27 TOM39T LGW → ZTH May 27, 18:50 UTCMay 27, 20:40 UTC1h 50m
2026-05-27 TOM4DL CUN → LGW May 27, 12:40 UTCMay 27, 17:10 UTC4h 30m
2026-05-27 TOM4KY ZTH → MAN May 27, 06:55 UTCMay 27, 11:05 UTC4h 10m
2026-05-26 TOM1GN AYT → LGW May 26, 20:15 UTCMay 27, 00:10 UTC3h 55m
2026-05-26 TOM506 LGW → AGA May 26, 14:45 UTCMay 26, 18:34 UTC3h 50m
2026-05-26 TOM30M HER → BRS May 26, 08:45 UTCMay 26, 10:25 UTC1h 40m
2026-05-26 TOM8JB FAO → LGW May 26, 05:34 UTCMay 26, 07:05 UTC1h 30m
2026-05-25 TOM6GL MAH → MAN May 25, 21:04 UTCMay 25, 22:55 UTC1h 50m
2026-05-25 TOM6LG MAN → TFS May 25, 17:45 UTCMay 25, 19:44 UTC2h 0m
2026-05-25 TOM9HC CWL → PFO May 25, 11:30 UTCMay 25, 15:15 UTC3h 45m
2026-05-25 TOM2ND LGW → TFS May 25, 05:55 UTCMay 25, 09:40 UTC3h 45m
2026-05-24 TOM1GJ LGW → AYT May 24, 17:25 UTCMay 24, 20:25 UTC3h 0m
2026-05-24 TOM2JG LGW → LCA May 24, 13:15 UTCMay 24, 16:15 UTC3h 0m
2026-05-23 TOM1NK PFO → LGW May 23, 20:10 UTCMay 24, 00:15 UTC4h 5m
2026-05-23 TOM37G LGW → TFS May 23, 14:35 UTCMay 23, 18:40 UTC4h 6m
2026-05-23 TOM9VJ MAH → LGW May 23, 10:40 UTCMay 23, 12:45 UTC2h 5m
2026-05-23 TOM40X EDI → PFO May 23, 06:50 UTCMay 23, 08:40 UTC1h 50m
2026-05-22 TOM35J MAN → REU May 22, 21:45 UTCMay 23, 00:55 UTC3h 10m
2026-05-22 TOM6KY LGW → BOJ May 22, 17:15 UTCMay 22, 20:20 UTC3h 5m
2026-05-22 TOM30D REU → BHX May 22, 12:00 UTCMay 22, 15:05 UTC3h 5m
2026-05-22 TOM2EH LGW → ZTH May 22, 07:40 UTCMay 22, 10:45 UTC3h 5m
2026-05-21 TOM511 DLM → LGW May 21, 19:40 UTCMay 21, 23:35 UTC3h 55m
2026-05-21 TOM510 LGW → DLM May 21, 14:30 UTCMay 21, 18:20 UTC3h 50m
2026-05-21 TOM1BC BOH → TFS May 21, 09:50 UTCMay 21, 12:05 UTC2h 15m
2026-05-21 TOM9HM VRN → MAN May 21, 05:35 UTCMay 21, 08:00 UTC2h 25m

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 6h 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 TRA91T, TRA7N, TRA084, TOM9VJ, TOM9HC.