Apparatus

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sensors Mode-S transponder

504E59

ICAO 24-bit transponder address · allocated to Moldova

Currently assigned to ER-BAG · BOEING 747-400

Hex
504E59
Octal
24047131
Decimal
5,262,937
Country
MD
Tail
ER-BAG
Type
B744
No current signal · last broadcast 1h ago
Flights observed
122
Distinct callsigns
20
Country
MD
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 504E59.

Country allocation

The ICAO 24-bit address 504E59 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
ATG7760 - 10 2026-06-02
ATG7764 - 6 2026-06-02
ATG7634 - 6 2026-05-30
ATG7793 - 4 2026-05-29
ATG7763 - 4 2026-05-31
ATG7619 - 4 2026-04-22
ATG6614 - 4 2026-04-15
ATG7790 - 3 2026-05-12
ATG7762 Aerotrans Airline 3 2026-06-01
ATG7761 - 3 2026-05-24
ATG7618 - 3 2026-04-19
ATG6631 - 3 2026-05-01
ATG6616 - 3 2026-04-17
ATG6613 Aerotrans Airline 3 2026-05-13
ATG7794 - 2 2026-05-22
ATG7780 - 2 2026-04-26
ATG7750 - 2 2026-04-17
ATG7635 - 2 2026-05-21
ATG7627 Aerotrans Airline 2 2026-04-27
ATG7626 - 2 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 ATG7760 - Jun 2, 16:20 UTCJun 2, 18:15 UTC1h 55m
2026-06-02 ATG7764 - Jun 2, 01:25 UTCJun 2, 06:30 UTC5h 5m
2026-06-01 ATG7762 CGO → NQZ Jun 1, 04:20 UTCJun 2, 04:15 UTC23h 55m
2026-06-01 ATG7762 CGO → NQZ Jun 1, 02:40 UTCJun 2, 02:15 UTC23h 35m
2026-05-31 ATG7763 - May 31, 21:15 UTCMay 31, 23:50 UTC2h 35m
2026-05-31 ATG7763 - May 31, 00:20 UTCMay 31, 23:50 UTC23h 30m
2026-05-30 ATG7634 - May 30, 22:20 UTCMay 31, 22:15 UTC23h 55m
2026-05-30 ATG7634 - May 30, 21:20 UTCMay 31, 01:11 UTC3h 51m
2026-05-30 ATG7764 - May 30, 13:20 UTCMay 30, 18:45 UTC5h 25m
2026-05-29 ATG7764 - May 29, 20:20 UTCMay 30, 18:45 UTC22h 25m
2026-05-29 ATG7793 - May 29, 18:20 UTCMay 30, 18:15 UTC23h 55m
2026-05-29 ATG7793 - May 29, 17:50 UTCMay 30, 16:15 UTC22h 25m
2026-05-28 ATG7764 - May 28, 20:20 UTCMay 29, 15:45 UTC19h 25m
2026-05-28 ATG7634 EMA → MST May 28, 19:40 UTCMay 29, 15:45 UTC20h 5m
2026-05-28 ATG7764 - May 28, 10:25 UTCMay 28, 15:45 UTC5h 20m
2026-05-27 ATG7764 - May 27, 16:20 UTCMay 28, 15:45 UTC23h 25m
2026-05-27 ATG7793 - May 27, 14:20 UTCMay 28, 14:15 UTC23h 55m
2026-05-27 ATG7793 - May 27, 14:10 UTCMay 28, 11:45 UTC21h 35m
2026-05-26 ATG7634 EMA → MST May 26, 16:50 UTCMay 27, 11:40 UTC18h 51m
2026-05-26 ATG7763 - May 26, 08:24 UTCMay 26, 13:24 UTC5h 0m
2026-05-25 ATG7763 - May 25, 10:20 UTCMay 26, 09:35 UTC23h 14m
2026-05-25 ATG7762 CGO → NQZ May 25, 08:25 UTCMay 25, 11:05 UTC2h 40m
2026-05-24 ATG7761 - May 24, 10:25 UTCMay 25, 06:05 UTC19h 40m
2026-05-24 ATG7761 - May 24, 08:20 UTCMay 25, 06:05 UTC21h 45m
2026-05-24 ATG7761 MST → MST May 24, 07:10 UTCMay 25, 06:05 UTC22h 55m
2026-05-23 ATG7634 - May 23, 10:20 UTCMay 24, 04:55 UTC18h 36m
2026-05-23 ATG7634 EMA → MST May 23, 10:05 UTCMay 24, 04:55 UTC18h 51m
2026-05-22 ATG7794 - May 22, 07:40 UTCMay 23, 00:10 UTC16h 30m
2026-05-22 ATG7794 - May 22, 00:20 UTCMay 23, 00:10 UTC23h 50m
2026-05-21 ATG7635 - May 21, 22:20 UTCMay 22, 22:15 UTC23h 55m
2026-05-21 ATG7635 - May 21, 22:10 UTCMay 22, 20:05 UTC21h 55m
2026-05-21 - - May 21, 13:20 UTCMay 21, 16:05 UTC2h 45m
2026-05-19 P E0D3Z - May 19, 14:45 UTCMay 19, 21:05 UTC6h 20m
2026-05-18 ATG7615 HKG → BNE May 18, 21:50 UTCMay 19, 02:45 UTC4h 55m
2026-05-17 ATG7615 HKG → BNE May 17, 23:20 UTCMay 17, 23:40 UTC20m
2026-05-15 ATG6690 - May 15, 17:10 UTCMay 15, 22:40 UTC5h 30m
2026-05-13 ATG6613 DEL → HKG May 13, 17:05 UTCMay 13, 18:00 UTC55m
2026-05-13 ATG6613 DEL → HKG May 13, 07:35 UTCMay 13, 13:05 UTC5h 30m
2026-05-13 ATG6613 DEL → HKG May 13, 05:30 UTCMay 13, 05:40 UTC10m
2026-05-12 - - May 12, 21:15 UTCMay 13, 02:45 UTC5h 30m
2026-05-12 ATG6611 - May 12, 11:20 UTCMay 12, 15:30 UTC4h 10m
2026-05-12 ATG6611 - May 12, 09:20 UTCMay 12, 09:35 UTC15m
2026-05-12 ATG7790 - May 12, 06:35 UTCMay 12, 07:05 UTC30m
2026-05-11 ATG7790 - May 11, 15:25 UTCMay 12, 04:45 UTC13h 21m
2026-05-11 - - May 11, 13:30 UTCMay 11, 13:40 UTC10m
2026-05-11 - - May 11, 10:05 UTCMay 11, 10:40 UTC35m
2026-05-10 ATG7632 - May 10, 08:05 UTCMay 10, 18:25 UTC10h 20m
2026-05-09 ATG7608 - May 9, 23:05 UTCMay 10, 04:09 UTC5h 5m
2026-05-09 ATG7608 - May 9, 11:50 UTCMay 9, 12:05 UTC15m
2026-05-09 - - May 9, 08:45 UTCMay 9, 09:20 UTC35m

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

Mode-S 504E59 frequently asked

What is Mode-S code 504E59?
504E59 is an ICAO 24-bit transponder address. Allocated to Moldova. Assigned to ER-BAG.
Where is Mode-S 504E59 registered?
Mode-S code 504E59 is allocated to Moldova (MD). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 504E59 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 504E59, octal 24047131, decimal 5,262,937.
What flights does 504E59 operate?
Mode-S 504E59 has broadcast 20 distinct callsigns, including ATG7760, ATG7764, ATG7634, ATG7793, ATG7763.