sensors Mode-S transponder

51603F

ICAO 24-bit transponder address · allocated to Montenegro

Currently assigned to 4O-AOE · EMBRAER ERJ-190-200

Hex
51603F
Octal
24260077
Decimal
5,333,055
Country
ME
Tail
4O-AOE
Type
E195
Broadcasting now · callsign MNE328 · 34,000 ft
Flights observed
223
Distinct callsigns
20
Country
ME
Last broadcast
41m ago

Current position

51603F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 51603F falls within the block assigned to Montenegro (ME) by ICAO Annex 10, Volume III. Every aircraft registered in Montenegro 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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 MNE328 TGD → NTE May 30, 05:15 UTCMay 30, 05:45 UTC30m
2026-05-29 MNE103 BEG → TGD May 29, 20:40 UTCMay 29, 21:00 UTC20m
2026-05-29 MNE102 TGD → BEG May 29, 19:20 UTCMay 29, 19:45 UTC25m
2026-05-29 MNE105 BEG → TGD May 29, 18:05 UTCMay 29, 18:25 UTC20m
2026-05-29 MNE104 TGD → BEG May 29, 16:40 UTCMay 29, 17:05 UTC25m
2026-05-29 MNE211 LJU → TGD May 29, 15:00 UTCMay 29, 15:40 UTC40m
2026-05-29 MNE210 TGD → LJU May 29, 13:20 UTCMay 29, 14:10 UTC50m
2026-05-29 MNE403 IST → TIV May 29, 08:35 UTCMay 29, 09:50 UTC1h 15m
2026-05-29 MNE402 TIV → IST May 29, 06:00 UTCMay 29, 07:15 UTC1h 15m
2026-05-28 MNE345 PRG → TGD May 28, 12:40 UTCMay 28, 13:50 UTC1h 10m
2026-05-28 MNE344 TGD → PRG May 28, 10:20 UTCMay 28, 11:40 UTC1h 20m
2026-05-27 MNE2101 - May 27, 21:55 UTCMay 27, 22:10 UTC15m
2026-05-27 MNE2100 - May 27, 21:10 UTCMay 27, 21:25 UTC15m
2026-05-27 MNE103 BEG → TGD May 27, 19:50 UTCMay 27, 20:10 UTC20m
2026-05-27 MNE102 TGD → BEG May 27, 18:15 UTCMay 27, 18:40 UTC25m
2026-05-27 MNE2491 - May 27, 14:35 UTCMay 27, 16:10 UTC1h 35m
2026-05-27 MNE2616 - May 27, 13:15 UTCMay 27, 13:35 UTC20m
2026-05-27 MNE2418 - May 27, 10:15 UTCMay 27, 12:20 UTC2h 5m
2026-05-26 MNE405 IST → TGD May 26, 11:24 UTCMay 26, 12:24 UTC1h 0m
2026-05-26 MNE404 TGD → IST May 26, 08:45 UTCMay 26, 09:45 UTC1h 0m
2026-05-25 MNE403 IST → TIV May 25, 08:05 UTCMay 25, 09:10 UTC1h 5m
2026-05-25 MNE402 TIV → IST May 25, 05:30 UTCMay 25, 06:40 UTC1h 10m
2026-05-25 MNE1002 - May 25, 04:25 UTCMay 25, 04:45 UTC20m
2026-05-24 MNE405 IST → TGD May 24, 20:15 UTCMay 24, 21:20 UTC1h 5m
2026-05-24 MNE404 TGD → IST May 24, 17:35 UTCMay 24, 18:35 UTC1h 0m
2026-05-24 MNE301 FRA → TGD May 24, 15:10 UTCMay 24, 16:40 UTC1h 30m
2026-05-24 MNE300 TGD → FRA May 24, 11:45 UTCMay 24, 13:20 UTC1h 35m
2026-05-24 MNE311 ZRH → TGD May 24, 09:15 UTCMay 24, 10:35 UTC1h 20m
2026-05-24 MNE310 TGD → ZRH May 24, 06:35 UTCMay 24, 08:00 UTC1h 25m
2026-05-23 MNE319 LIL → TGD May 23, 16:50 UTCMay 23, 18:45 UTC1h 55m
2026-05-23 MNE318 TGD → LIL May 23, 13:50 UTCMay 23, 15:50 UTC2h 0m
2026-05-23 MNE101 BEG → TGD May 23, 07:10 UTCMay 23, 07:30 UTC20m
2026-05-23 MNE100 TGD → BEG May 23, 05:40 UTCMay 23, 06:10 UTC30m
2026-05-22 MNE311 ZRH → TGD May 22, 18:20 UTCMay 22, 19:40 UTC1h 20m
2026-05-22 MNE310 TGD → ZRH May 22, 15:30 UTCMay 22, 16:55 UTC1h 25m
2026-05-21 MNE355 PRG → TGD May 21, 07:55 UTCMay 21, 09:00 UTC1h 5m
2026-05-21 MNE354 TGD → PRG May 21, 05:35 UTCMay 21, 06:55 UTC1h 20m
2026-05-20 MNE211 LJU → TGD May 20, 18:00 UTCMay 20, 18:45 UTC45m
2026-05-20 MNE210 TGD → LJU May 20, 16:30 UTCMay 20, 17:10 UTC40m
2026-05-20 MNE301 FRA → TGD May 20, 14:00 UTCMay 20, 15:25 UTC1h 25m
2026-05-20 MNE300 TGD → FRA May 20, 10:20 UTCMay 20, 12:00 UTC1h 40m
2026-05-20 MNE101 BEG → TGD May 20, 07:05 UTCMay 20, 07:30 UTC25m
2026-05-20 MNE100 TGD → BEG May 20, 05:40 UTCMay 20, 06:10 UTC30m
2026-05-19 MNE103 BEG → TGD May 19, 18:05 UTCMay 19, 18:30 UTC25m
2026-05-19 MNE102 TGD → BEG May 19, 16:45 UTCMay 19, 17:15 UTC30m
2026-05-19 MNE405 IST → TGD May 19, 11:15 UTCMay 19, 12:20 UTC1h 5m
2026-05-19 MNE404 TGD → IST May 19, 08:45 UTCMay 19, 09:45 UTC1h 0m
2026-05-18 MNE2259 - May 18, 13:20 UTCMay 18, 14:15 UTC55m
2026-05-18 MNE2258 TGD → VIE May 18, 08:55 UTCMay 18, 09:50 UTC55m
2026-05-17 MNE405 IST → TGD May 17, 19:40 UTCMay 17, 20:50 UTC1h 10m

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 4O-AOE page for operator, model, and routing details .

Mode-S 51603F frequently asked

What is Mode-S code 51603F?
51603F is an ICAO 24-bit transponder address. Allocated to Montenegro. Assigned to 4O-AOE.
Where is Mode-S 51603F registered?
Mode-S code 51603F is allocated to Montenegro (ME). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 51603F broadcasting right now?
Yes. Mode-S 51603F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 51603F, octal 24260077, decimal 5,333,055.
What flights does 51603F operate?
Mode-S 51603F has broadcast 20 distinct callsigns, including MNE103, MNE102, MNE100, MNE101, MNE151.