Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

498496

ICAO 24-bit transponder address · allocated to Czech Republic

Currently assigned to 0558 · ZLIN Z-42/142/242

Hex
498496
Octal
22302226
Decimal
4,818,070
Country
CZ
Tail
0558
Type
Z42
No current signal · last broadcast 20d ago
Flights observed
140
Distinct callsigns
20
Country
CZ
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S 498496.

Country allocation

The ICAO 24-bit address 498496 falls within the block assigned to Czech Republic (CZ) by ICAO Annex 10, Volume III. Every aircraft registered in Czech Republic 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
BASIC17 - 11 2026-05-26
BASIC25 - 9 2026-06-24
BASIC15 - 9 2026-06-17
BASIC67 - 8 2026-06-04
BASIC47 - 8 2026-06-22
BASIC11 - 8 2026-06-22
BASIC75 - 6 2026-06-18
BASIC57 - 6 2026-06-18
BASIC35 - 6 2026-06-22
BASIC65 - 5 2026-06-18
BASIC55 - 5 2026-06-16
BASIC53 - 5 2026-06-22
BASIC61 - 4 2026-06-23
BASIC51 - 4 2026-06-23
BASIC43 - 4 2026-06-23
BASIC37 - 4 2026-04-29
BASIC77 - 3 2026-05-05
BASIC71 - 3 2026-05-28
BASIC63 - 3 2026-06-02
BASIC13 - 3 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-24 BASIC25 - Jun 24, 08:55 UTCJun 24, 10:55 UTC2h 0m
2026-06-24 BASIC13 PED → PED Jun 24, 07:05 UTCJun 24, 08:24 UTC1h 20m
2026-06-23 BASIC61 - Jun 23, 16:44 UTCJun 23, 18:04 UTC1h 20m
2026-06-23 BASIC51 - Jun 23, 14:35 UTCJun 23, 15:50 UTC1h 15m
2026-06-23 BASIC43 - Jun 23, 13:09 UTCJun 23, 14:04 UTC55m
2026-06-23 BASIC33 - Jun 23, 11:10 UTCJun 23, 12:35 UTC1h 25m
2026-06-23 BASIC23 - Jun 23, 08:35 UTCJun 23, 10:39 UTC2h 5m
2026-06-23 BASIC13 - Jun 23, 07:05 UTCJun 23, 08:00 UTC55m
2026-06-22 BASIC53 PED → PED Jun 22, 16:34 UTCJun 22, 17:50 UTC1h 15m
2026-06-22 BASIC47 - Jun 22, 14:59 UTCJun 22, 15:54 UTC55m
2026-06-22 BASIC35 PED → PED Jun 22, 11:39 UTCJun 22, 12:34 UTC55m
2026-06-22 BASIC25 PED → PED Jun 22, 10:10 UTCJun 22, 11:04 UTC55m
2026-06-22 BASIC11 - Jun 22, 08:00 UTCJun 22, 09:19 UTC1h 20m
2026-06-18 BASIC75 - Jun 18, 16:40 UTCJun 18, 17:55 UTC1h 15m
2026-06-18 BASIC65 - Jun 18, 14:50 UTCJun 18, 16:10 UTC1h 20m
2026-06-18 BASIC57 PED → PED Jun 18, 13:15 UTCJun 18, 14:15 UTC1h 0m
2026-06-17 BASIC75 PED → PED Jun 17, 16:40 UTCJun 17, 18:00 UTC1h 20m
2026-06-17 BASIC53 PED → PED Jun 17, 13:00 UTCJun 17, 15:46 UTC2h 45m
2026-06-17 BABY37 - Jun 17, 10:10 UTCJun 17, 11:45 UTC1h 35m
2026-06-17 BASIC15 PED → PED Jun 17, 07:15 UTCJun 17, 09:20 UTC2h 5m
2026-06-16 BASIC61 - Jun 16, 14:30 UTCJun 16, 15:24 UTC55m
2026-06-16 BASIC55 - Jun 16, 13:00 UTCJun 16, 14:25 UTC1h 25m
2026-06-16 BASIC43 - Jun 16, 10:55 UTCJun 16, 11:40 UTC45m
2026-06-16 BASIC13 PED → PED Jun 16, 06:59 UTCJun 16, 09:55 UTC2h 55m
2026-06-15 BASIC75 - Jun 15, 17:30 UTCJun 15, 18:25 UTC55m
2026-06-15 BASIC65 PED → PED Jun 15, 15:59 UTCJun 15, 16:59 UTC1h 0m
2026-06-15 BASIC15 - Jun 15, 08:20 UTCJun 15, 10:30 UTC2h 10m
2026-06-09 BASIC61 - Jun 9, 18:10 UTCJun 9, 19:00 UTC50m
2026-06-09 BASIC55 - Jun 9, 17:00 UTCJun 9, 17:35 UTC35m
2026-06-09 BASIC15 PED → PED Jun 9, 07:10 UTCJun 9, 08:10 UTC1h 0m
2026-06-08 BASIC15 PED → PED Jun 8, 08:00 UTCJun 8, 09:05 UTC1h 5m
2026-06-04 BASIC67 PED → PED Jun 4, 17:30 UTCJun 4, 17:40 UTC10m
2026-06-04 BASIC53 PED → PED Jun 4, 12:55 UTCJun 4, 17:00 UTC4h 5m
2026-06-04 BASIC35 - Jun 4, 11:20 UTCJun 4, 12:15 UTC55m
2026-06-04 BASIC25 PED → PED Jun 4, 08:40 UTCJun 4, 10:45 UTC2h 5m
2026-06-04 BASIC15 PED → PED Jun 4, 07:05 UTCJun 4, 08:05 UTC1h 0m
2026-06-03 BASIC45 PED → PED Jun 3, 16:55 UTCJun 3, 17:35 UTC40m
2026-06-02 BASIC75 PED → PED Jun 2, 17:20 UTCJun 2, 18:15 UTC55m
2026-06-02 BASIC63 - Jun 2, 15:35 UTCJun 2, 16:50 UTC1h 15m
2026-06-02 BASIC51 - Jun 2, 12:50 UTCJun 2, 15:00 UTC2h 10m
2026-06-02 BASIC35 PED → PED Jun 2, 09:50 UTCJun 2, 11:15 UTC1h 25m
2026-06-02 BASIC25 - Jun 2, 08:30 UTCJun 2, 09:15 UTC45m
2026-06-02 BASIC15 - Jun 2, 07:05 UTCJun 2, 07:50 UTC45m
2026-05-29 BASIC11 - May 29, 07:20 UTCMay 29, 09:55 UTC2h 35m
2026-05-28 BASIC71 - May 28, 16:00 UTCMay 28, 17:45 UTC1h 45m
2026-05-28 BASIC63 - May 28, 14:25 UTCMay 28, 15:15 UTC50m
2026-05-28 BASIC53 - May 28, 13:00 UTCMay 28, 13:45 UTC45m
2026-05-28 BASIC43 - May 28, 11:35 UTCMay 28, 12:25 UTC50m
2026-05-28 BASIC33 - May 28, 09:50 UTCMay 28, 10:50 UTC1h 0m
2026-05-28 BASIC25 PED → PED May 28, 08:25 UTCMay 28, 09:15 UTC50m

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 0558 page for operator, model, and routing details .

Mode-S 498496 frequently asked

What is Mode-S code 498496?
498496 is an ICAO 24-bit transponder address. Allocated to Czech Republic. Assigned to 0558.
Where is Mode-S 498496 registered?
Mode-S code 498496 is allocated to Czech Republic (CZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 498496 broadcasting right now?
No active broadcast right now. Last signal was 20d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 498496, octal 22302226, decimal 4,818,070.
What flights does 498496 operate?
Mode-S 498496 has broadcast 20 distinct callsigns, including BASIC17, BASIC25, BASIC15, BASIC67, BASIC47.