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sensors Mode-S transponder

504E89

ICAO 24-bit transponder address · allocated to Moldova

Currently assigned to ER-00005 · AIRBUS A-320

Hex
504E89
Octal
24047211
Decimal
5,262,985
Country
MD
Tail
ER-00005
Type
A320
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
230
Distinct callsigns
20
Country
MD
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 504E89.

Country allocation

The ICAO 24-bit address 504E89 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 Four Island Air 18 2026-07-22
FIA6816 - 16 2026-07-26
FIA6343 Four Island Air 15 2026-07-25
FIA6344 Four Island Air 14 2026-07-24
FIA6815 - 13 2026-07-25
FIA5582 Four Island Air 10 2026-07-21
FIA5510 Four Island Air 8 2026-07-19
FIA5509 - 7 2026-07-10
FIA5420 Four Island Air 6 2026-07-21
FIA5419 Four Island Air 6 2026-07-20
FIA6412 - 5 2026-07-13
FIA5812 Four Island Air 5 2026-07-24
FIA5811 Four Island Air 5 2026-07-24
FIA5512 Four Island Air 5 2026-06-28
FIA5511 Four Island Air 5 2026-06-28
FIA6411 - 4 2026-06-24
FIA6311 Four Island Air 4 2026-05-22
FIA6351 - 3 2026-07-19
FIA6308 - 3 2026-06-21
FIA5921 - 3 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FIA5904 NCE → RMO Jul 26, 21:05 UTCJul 26, 22:15 UTC1h 10m
2026-07-26 FIA5903 RMO → NCE Jul 26, 17:15 UTCJul 26, 19:40 UTC2h 25m
2026-07-26 FIA5402 AGP → RMO Jul 26, 12:30 UTCJul 26, 15:40 UTC3h 10m
2026-07-26 FIA5401 RMO → AGP Jul 26, 06:40 UTCJul 26, 10:55 UTC4h 15m
2026-07-26 FIA6816 - Jul 26, 00:05 UTCJul 26, 01:35 UTC1h 30m
2026-07-25 FIA6815 - Jul 25, 22:30 UTCJul 25, 23:00 UTC30m
2026-07-25 FIA5548 STN → RMO Jul 25, 17:40 UTCJul 25, 20:10 UTC2h 30m
2026-07-25 FIA5547 RMO → STN Jul 25, 08:20 UTCJul 25, 15:40 UTC7h 20m
2026-07-25 FIA6343 RMO → SSH Jul 25, 03:55 UTCJul 25, 06:25 UTC2h 30m
2026-07-24 FIA5812 LIS → RMO Jul 24, 22:25 UTCJul 25, 01:55 UTC3h 30m
2026-07-24 FIA5811 RMO → LIS Jul 24, 17:05 UTCJul 24, 21:15 UTC4h 10m
2026-07-24 FIA6344 SSH → RMO Jul 24, 09:10 UTCJul 24, 11:35 UTC2h 25m
2026-07-24 FIA6816 - Jul 24, 00:00 UTCJul 24, 01:20 UTC1h 20m
2026-07-23 FIA6815 - Jul 23, 21:55 UTCJul 23, 22:50 UTC55m
2026-07-23 FIA5406 GVA → RMO Jul 23, 15:05 UTCJul 23, 17:05 UTC2h 0m
2026-07-22 FIA5405 RMO → GVA Jul 22, 22:15 UTCJul 23, 13:45 UTC15h 30m
2026-07-22 FIA5581 RMO → TBS Jul 22, 20:20 UTCJul 22, 20:40 UTC20m
2026-07-21 FIA5582 TBS → RMO Jul 21, 22:20 UTCJul 22, 10:25 UTC12h 5m
2026-07-21 FIA5581 RMO → TBS Jul 21, 20:30 UTCJul 21, 20:45 UTC15m
2026-07-21 FIA5420 PMI → RMO Jul 21, 13:25 UTCJul 21, 19:30 UTC6h 5m
2026-07-20 FIA5419 RMO → PMI Jul 20, 22:30 UTCJul 21, 11:00 UTC12h 30m
2026-07-20 FIA5581 RMO → TBS Jul 20, 20:15 UTCJul 20, 20:35 UTC20m
2026-07-20 FIA5581 RMO → TBS Jul 20, 18:40 UTCJul 20, 19:20 UTC40m
2026-07-20 FIA5232 BLQ → RMO Jul 20, 15:25 UTCJul 20, 17:00 UTC1h 35m
2026-07-20 FIA5231 RMO → BLQ Jul 20, 06:55 UTCJul 20, 13:45 UTC6h 50m
2026-07-20 FIA6816 - Jul 20, 00:15 UTCJul 20, 05:15 UTC5h 0m
2026-07-19 FIA5510 TLV → RMO Jul 19, 16:55 UTCJul 19, 23:00 UTC6h 5m
2026-07-19 FIA6352 - Jul 19, 07:25 UTCJul 19, 15:10 UTC7h 45m
2026-07-19 FIA6351 - Jul 19, 03:40 UTCJul 19, 06:00 UTC2h 20m
2026-07-18 FIA5582 - Jul 18, 22:20 UTCJul 18, 23:25 UTC1h 5m
2026-07-18 FIA5581 - Jul 18, 20:30 UTCJul 18, 20:50 UTC20m
2026-07-18 FIA5581 - Jul 18, 18:45 UTCJul 18, 19:30 UTC45m
2026-07-18 FIA5612 - Jul 18, 06:55 UTCJul 18, 08:25 UTC1h 30m
2026-07-18 FIA5611 - Jul 18, 03:30 UTCJul 18, 05:15 UTC1h 45m
2026-07-17 FIA5812 - Jul 17, 22:25 UTCJul 18, 02:05 UTC3h 40m
2026-07-17 FIA5811 - Jul 17, 16:34 UTCJul 17, 21:00 UTC4h 25m
2026-07-17 FIA6344 - Jul 17, 05:04 UTCJul 17, 11:45 UTC6h 40m
2026-07-16 FIA5582 - Jul 16, 22:45 UTCJul 17, 01:00 UTC2h 15m
2026-07-16 FIA5581 - Jul 16, 21:05 UTCJul 16, 21:25 UTC20m
2026-07-16 FIA5402 - Jul 16, 12:05 UTCJul 16, 15:25 UTC3h 20m
2026-07-16 FIA5401 - Jul 16, 06:15 UTCJul 16, 09:55 UTC3h 40m
2026-07-15 FIA5612 - Jul 15, 06:50 UTCJul 15, 08:20 UTC1h 30m
2026-07-14 FIA5611 BUS → BER Jul 14, 21:15 UTCJul 15, 05:05 UTC7h 49m
2026-07-14 FIA5921 - Jul 14, 19:50 UTCJul 14, 19:55 UTC5m
2026-07-14 FIA5921 - Jul 14, 18:10 UTCJul 14, 19:00 UTC50m
2026-07-14 FIA5420 - Jul 14, 12:20 UTCJul 14, 15:00 UTC2h 40m
2026-07-14 FIA5419 - Jul 14, 07:30 UTCJul 14, 10:25 UTC2h 55m
2026-07-13 FIA5582 - Jul 13, 22:10 UTCJul 13, 23:15 UTC1h 5m
2026-07-13 FIA5581 - Jul 13, 19:05 UTCJul 13, 20:35 UTC1h 30m
2026-07-13 FIA5232 - Jul 13, 15:20 UTCJul 13, 17:00 UTC1h 40m

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-00005 page for operator, model, and routing details .

Mode-S 504E89 frequently asked

What is Mode-S code 504E89?
504E89 is an ICAO 24-bit transponder address. Allocated to Moldova. Assigned to ER-00005.
Where is Mode-S 504E89 registered?
Mode-S code 504E89 is allocated to Moldova (MD). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 504E89 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 504E89, octal 24047211, decimal 5,262,985.
What flights does 504E89 operate?
Mode-S 504E89 has broadcast 20 distinct callsigns, including FIA5581, FIA6816, FIA6343, FIA6344, FIA6815.