Apparatus

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sensors Mode-S transponder

500521

ICAO 24-bit transponder address

Hex
500521
Octal
24002441
Decimal
5,244,193
No current signal · last broadcast 7d ago
Flights observed
40
Distinct callsigns
1
Country
-
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S 500521.

Callsign history 1 distinct

Callsign Airline Flights Last seen
T7VIC - 40 2026-07-24

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-07-24 T7VIC - Jul 24, 23:20 UTCJul 25, 06:10 UTC6h 50m
2026-07-22 T7VIC DWC → EWR Jul 22, 18:50 UTCJul 23, 08:30 UTC13h 40m
2026-07-21 T7VIC - Jul 21, 17:20 UTCJul 21, 18:25 UTC1h 5m
2026-07-21 T7VIC - Jul 21, 03:15 UTCJul 21, 03:35 UTC20m
2026-07-21 T7VIC - Jul 21, 02:35 UTCJul 21, 02:45 UTC10m
2026-07-20 T7VIC - Jul 20, 13:55 UTCJul 20, 14:05 UTC10m
2026-07-20 T7VIC - Jul 20, 06:15 UTCJul 20, 06:35 UTC20m
2026-07-18 T7VIC - Jul 18, 18:00 UTCJul 19, 03:45 UTC9h 45m
2026-07-16 T7VIC BER → LTN Jul 16, 18:05 UTCJul 16, 19:35 UTC1h 30m
2026-07-16 T7VIC - Jul 16, 13:49 UTCJul 16, 14:55 UTC1h 5m
2026-07-15 T7VIC - Jul 15, 12:50 UTCJul 15, 13:35 UTC45m
2026-07-11 T7VIC - Jul 11, 18:25 UTCJul 12, 00:50 UTC6h 25m
2026-07-09 T7VIC - Jul 9, 23:00 UTCJul 9, 23:10 UTC10m
2026-07-09 T7VIC - Jul 9, 22:10 UTCJul 9, 22:25 UTC15m
2026-07-09 T7VIC - Jul 9, 20:15 UTCJul 9, 20:50 UTC35m
2026-07-09 T7VIC - Jul 9, 11:00 UTCJul 9, 13:10 UTC2h 10m
2026-07-08 T7VIC - Jul 8, 09:20 UTCJul 8, 09:45 UTC25m
2026-07-07 T7VIC - Jul 7, 10:15 UTCJul 7, 10:35 UTC20m
2026-07-05 T7VIC - Jul 5, 10:10 UTCJul 5, 10:20 UTC10m
2026-07-02 T7VIC - Jul 2, 11:00 UTCJul 2, 11:25 UTC25m
2026-06-29 T7VIC - Jun 29, 19:54 UTCJun 30, 03:55 UTC8h 1m
2026-06-27 T7VIC - Jun 27, 15:10 UTCJun 27, 15:34 UTC25m
2026-06-24 T7VIC - Jun 24, 07:20 UTCJun 24, 07:40 UTC20m
2026-06-23 T7VIC - Jun 23, 07:29 UTCJun 23, 07:49 UTC20m
2026-06-22 T7VIC DEL → STN Jun 22, 19:29 UTCJun 23, 05:15 UTC9h 45m
2026-06-22 T7VIC - Jun 22, 13:39 UTCJun 22, 18:19 UTC4h 40m
2026-06-22 T7VIC - Jun 22, 06:29 UTCJun 22, 11:39 UTC5h 10m
2026-06-21 T7VIC - Jun 21, 16:19 UTCJun 21, 18:29 UTC2h 10m
2026-06-21 T7VIC - Jun 21, 09:44 UTCJun 21, 10:04 UTC20m
2026-06-19 T7VIC - Jun 19, 03:20 UTCJun 19, 03:29 UTC10m
2026-06-18 T7VIC - Jun 18, 12:40 UTCJun 18, 12:50 UTC10m
2026-06-18 T7VIC - Jun 18, 10:30 UTCJun 18, 10:45 UTC15m
2026-06-18 T7VIC - Jun 18, 05:20 UTCJun 18, 05:50 UTC30m
2026-06-18 T7VIC - Jun 18, 03:50 UTCJun 18, 04:00 UTC10m
2026-06-18 T7VIC - Jun 18, 02:50 UTCJun 18, 03:00 UTC10m
2026-06-17 T7VIC - Jun 17, 08:25 UTCJun 17, 12:20 UTC3h 55m
2026-06-16 T7VIC - Jun 16, 21:35 UTCJun 17, 07:15 UTC9h 40m
2026-06-14 T7VIC - Jun 14, 13:30 UTCJun 14, 14:30 UTC1h 0m
2026-06-12 T7VIC - Jun 12, 15:20 UTCJun 13, 01:00 UTC9h 40m
2026-06-12 T7VIC - Jun 12, 12:55 UTCJun 12, 13:05 UTC10m

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.

Mode-S 500521 frequently asked

What is Mode-S code 500521?
500521 is an ICAO 24-bit transponder address.
Is 500521 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 500521, octal 24002441, decimal 5,244,193.
What flights does 500521 operate?
Mode-S 500521 has broadcast 1 distinct callsign, including T7VIC.