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sensors Mode-S transponder

504E86

ICAO 24-bit transponder address · allocated to Moldova

Currently assigned to ER-00004 · AIRBUS A-320

Hex
504E86
Octal
24047206
Decimal
5,262,982
Country
MD
Tail
ER-00004
Type
A320
No current signal · last broadcast 1h ago
Flights observed
307
Distinct callsigns
20
Country
MD
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 504E86.

Country allocation

The ICAO 24-bit address 504E86 falls within the block assigned to Moldova (MD) by ICAO Annex 10, Volume III. Every aircraft registered in Moldova 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
FIA5581 - 27 2026-07-12
FIA6344 - 23 2026-06-26
FIA6343 - 17 2026-06-27
FIA5582 - 16 2026-07-12
FIA6815 - 10 2026-07-13
FIA5510 - 10 2026-07-09
FIA6816 - 9 2026-07-14
FIA5738 Four Island Air 9 2026-05-02
FIA5737 Four Island Air 9 2026-05-02
FIA5638 - 9 2026-07-06
FIA5509 - 9 2026-07-09
FIA5637 - 8 2026-07-03
FIA5326 - 7 2026-07-13
FIA5812 - 6 2026-07-10
FIA5811 - 6 2026-07-10
FIA5231 - 6 2026-06-29
FIA6412 - 5 2026-06-29
FIA6411 - 5 2026-06-29
FIA6307 - 5 2026-07-12
FIA5420 - 5 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FIA5714 - Jul 14, 06:25 UTCJul 14, 07:45 UTC1h 20m
2026-07-14 FIA6816 AYT → PRG Jul 14, 00:00 UTCJul 14, 04:40 UTC4h 40m
2026-07-13 FIA6815 - Jul 13, 21:15 UTCJul 13, 22:50 UTC1h 35m
2026-07-13 FIA5512 - Jul 13, 15:05 UTCJul 13, 17:50 UTC2h 45m
2026-07-13 FIA5511 - Jul 13, 10:30 UTCJul 13, 13:40 UTC3h 10m
2026-07-13 FIA5326 - Jul 13, 06:55 UTCJul 13, 07:30 UTC35m
2026-07-13 FIA5325 - Jul 13, 04:10 UTCJul 13, 05:20 UTC1h 10m
2026-07-12 FIA5582 - Jul 12, 22:05 UTCJul 12, 23:15 UTC1h 10m
2026-07-12 FIA5581 - Jul 12, 20:20 UTCJul 12, 20:40 UTC20m
2026-07-12 FIA5406 - Jul 12, 14:20 UTCJul 12, 16:20 UTC2h 0m
2026-07-12 FIA5405 - Jul 12, 10:10 UTCJul 12, 12:45 UTC2h 35m
2026-07-12 FIA6307 - Jul 12, 01:25 UTCJul 12, 08:20 UTC6h 55m
2026-07-11 FIA5714 - Jul 11, 13:05 UTCJul 11, 14:20 UTC1h 15m
2026-07-11 FIA5713 - Jul 11, 06:40 UTCJul 11, 11:55 UTC5h 15m
2026-07-11 FIA5325 - Jul 11, 04:35 UTCJul 11, 05:01 UTC25m
2026-07-10 FIA5812 - Jul 10, 22:35 UTCJul 11, 02:15 UTC3h 40m
2026-07-10 FIA5811 - Jul 10, 16:40 UTCJul 10, 21:00 UTC4h 20m
2026-07-10 FIA5420 - Jul 10, 11:00 UTCJul 10, 13:35 UTC2h 35m
2026-07-10 FIA5419 - Jul 10, 06:50 UTCJul 10, 09:15 UTC2h 25m
2026-07-09 FIA5510 - Jul 9, 20:55 UTCJul 9, 23:05 UTC2h 10m
2026-07-09 FIA5509 - Jul 9, 16:50 UTCJul 9, 19:15 UTC2h 25m
2026-07-09 FIA5402 - Jul 9, 11:25 UTCJul 9, 15:00 UTC3h 35m
2026-07-09 FIA5401 - Jul 9, 05:50 UTCJul 9, 09:35 UTC3h 45m
2026-07-08 FIA5618 - Jul 8, 21:35 UTCJul 9, 00:05 UTC2h 30m
2026-07-08 FIA5617 - Jul 8, 16:45 UTCJul 8, 19:45 UTC3h 0m
2026-07-08 FIA5234 - Jul 8, 13:00 UTCJul 8, 14:35 UTC1h 35m
2026-07-08 FIA5233 - Jul 8, 09:30 UTCJul 8, 11:35 UTC2h 5m
2026-07-08 FIA5612 - Jul 8, 06:30 UTCJul 8, 08:00 UTC1h 30m
2026-07-07 FIA5582 TBS → BER Jul 7, 21:55 UTCJul 8, 04:55 UTC7h 0m
2026-07-07 FIA5581 - Jul 7, 19:40 UTCJul 7, 20:05 UTC25m
2026-07-07 FIA5581 - Jul 7, 18:00 UTCJul 7, 18:45 UTC45m
2026-07-07 FIA5420 - Jul 7, 12:15 UTCJul 7, 15:00 UTC2h 45m
2026-07-07 FIA5419 - Jul 7, 07:35 UTCJul 7, 10:25 UTC2h 50m
2026-07-06 FIA5234 - Jul 6, 13:30 UTCJul 6, 15:10 UTC1h 40m
2026-07-06 FIA5233 - Jul 6, 10:15 UTCJul 6, 12:00 UTC1h 45m
2026-07-06 FIA5638 - Jul 6, 06:45 UTCJul 6, 08:35 UTC1h 50m
2026-07-05 FIA5406 - Jul 5, 15:50 UTCJul 6, 05:25 UTC13h 35m
2026-07-05 FIA6307 - Jul 5, 01:20 UTCJul 5, 12:50 UTC11h 30m
2026-07-04 FIA5714 - Jul 4, 13:15 UTCJul 4, 14:30 UTC1h 15m
2026-07-03 FIA5713 AYT → PRG Jul 3, 23:40 UTCJul 4, 12:05 UTC12h 25m
2026-07-03 FIA6815 - Jul 3, 21:45 UTCJul 3, 22:40 UTC55m
2026-07-03 FIA5512 - Jul 3, 15:15 UTCJul 3, 17:55 UTC2h 40m
2026-07-03 FIA5511 - Jul 3, 10:50 UTCJul 3, 13:45 UTC2h 55m
2026-07-03 FIA5638 - Jul 3, 06:30 UTCJul 3, 08:25 UTC1h 55m
2026-07-03 FIA5637 - Jul 3, 02:50 UTCJul 3, 05:05 UTC2h 15m
2026-07-03 FIA6816 - Jul 3, 00:00 UTCJul 3, 01:25 UTC1h 25m
2026-07-02 FIA6815 - Jul 2, 21:20 UTCJul 2, 22:50 UTC1h 30m
2026-07-02 FIA5406 - Jul 2, 14:00 UTCJul 2, 16:05 UTC2h 5m
2026-07-02 FIA5405 - Jul 2, 09:45 UTCJul 2, 12:15 UTC2h 30m
2026-07-02 FIA6816 - Jul 2, 00:05 UTCJul 2, 01:30 UTC1h 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 ER-00004 page for operator, model, and routing details .

Mode-S 504E86 frequently asked

What is Mode-S code 504E86?
504E86 is an ICAO 24-bit transponder address. Allocated to Moldova. Assigned to ER-00004.
Where is Mode-S 504E86 registered?
Mode-S code 504E86 is allocated to Moldova (MD). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 504E86 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 504E86, octal 24047206, decimal 5,262,982.
What flights does 504E86 operate?
Mode-S 504E86 has broadcast 20 distinct callsigns, including FIA5581, FIA6344, FIA6343, FIA5582, FIA6815.