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sensors Mode-S transponder

501C39

ICAO 24-bit transponder address · allocated to Croatia

Currently assigned to 9A-BTL · AIRBUS A-320

Hex
501C39
Octal
24016071
Decimal
5,250,105
Country
HR
Tail
9A-BTL
Type
A320
Broadcasting now · callsign MMO3144 · 36,000 ft
Flights observed
221
Distinct callsigns
20
Country
HR
Last broadcast
5h ago

Current position

501C39 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 501C39 falls within the block assigned to Croatia (HR) by ICAO Annex 10, Volume III. Every aircraft registered in Croatia 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
MMO1160 - 18 2026-07-18
MMO1161 Malta MedAir 15 2026-07-18
MMO3141 - 12 2026-07-12
MMO1240 - 12 2026-07-17
MMO1210 Malta MedAir 11 2026-07-17
MMO1241 - 9 2026-07-17
MMO116P - 9 2026-07-07
MMO1151 - 8 2026-07-04
MMO120P Malta MedAir 7 2026-07-17
MMO1150 - 7 2026-06-27
MMO1211 Malta MedAir 6 2026-05-24
MMO115P Malta MedAir 6 2026-07-04
MMO1511 - 5 2026-05-30
MMO121P Malta MedAir 5 2026-07-17
MMO151P - 4 2026-05-30
MMO1510 - 4 2026-05-27
MMO1153 - 4 2026-07-03
MMO1152 - 4 2026-06-26
MMO3144 - 3 2026-07-18
GAV545 - 3 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 MMO3144 - Jul 18, 11:55 UTCJul 18, 14:10 UTC2h 15m
2026-07-18 MMO1161 LMP → BGY Jul 18, 07:15 UTCJul 18, 08:50 UTC1h 35m
2026-07-18 MMO1160 - Jul 18, 04:35 UTCJul 18, 06:10 UTC1h 35m
2026-07-17 MMO1241 - Jul 17, 18:10 UTCJul 17, 21:20 UTC3h 10m
2026-07-17 MMO1240 - Jul 17, 13:05 UTCJul 17, 16:44 UTC3h 40m
2026-07-17 MMO121P BGY → PSA Jul 17, 10:30 UTCJul 17, 11:35 UTC1h 5m
2026-07-17 MMO1210 LDE → BGY Jul 17, 06:50 UTCJul 17, 08:49 UTC2h 0m
2026-07-17 MMO120P BGY → BRI Jul 17, 03:10 UTCJul 17, 03:34 UTC25m
2026-07-16 MMO1161 - Jul 16, 22:05 UTCJul 16, 23:10 UTC1h 5m
2026-07-15 MMO1160 - Jul 15, 08:20 UTCJul 15, 09:30 UTC1h 10m
2026-07-14 MMO121P BGY → PSA Jul 14, 19:25 UTCJul 14, 20:15 UTC50m
2026-07-14 MMO1210 - Jul 14, 16:35 UTCJul 14, 17:45 UTC1h 10m
2026-07-14 MMO120P - Jul 14, 13:50 UTCJul 14, 15:05 UTC1h 15m
2026-07-14 MMO1161 - Jul 14, 10:30 UTCJul 14, 11:55 UTC1h 25m
2026-07-14 MMO1160 - Jul 14, 07:45 UTCJul 14, 09:10 UTC1h 25m
2026-07-14 CTN7471 - Jul 14, 05:40 UTCJul 14, 06:30 UTC50m
2026-07-13 CTN71F - Jul 13, 16:50 UTCJul 13, 18:05 UTC1h 15m
2026-07-13 CTN52R - Jul 13, 13:40 UTCJul 13, 15:35 UTC1h 55m
2026-07-13 CTN413 - Jul 13, 10:45 UTCJul 13, 11:45 UTC1h 0m
2026-07-13 CTN416 - Jul 13, 07:15 UTCJul 13, 08:30 UTC1h 15m
2026-07-13 CTN7416 - Jul 13, 05:05 UTCJul 13, 05:45 UTC40m
2026-07-12 MMO1161 - Jul 12, 18:45 UTCJul 12, 20:10 UTC1h 25m
2026-07-12 MMO1160 - Jul 12, 16:10 UTCJul 12, 17:25 UTC1h 15m
2026-07-12 MMO3141 - Jul 12, 05:15 UTCJul 12, 14:10 UTC8h 55m
2026-07-11 MMO3144 - Jul 11, 19:10 UTCJul 11, 22:15 UTC3h 5m
2026-07-11 MMO3144 - Jul 11, 11:40 UTCJul 11, 19:05 UTC7h 25m
2026-07-11 MMO1161 - Jul 11, 07:20 UTCJul 11, 08:50 UTC1h 30m
2026-07-11 MMO1160 - Jul 11, 04:30 UTCJul 11, 06:05 UTC1h 35m
2026-07-10 MMO1241 - Jul 10, 18:45 UTCJul 10, 22:00 UTC3h 15m
2026-07-10 MMO1240 - Jul 10, 17:15 UTCJul 10, 17:40 UTC25m
2026-07-10 MMO1240 - Jul 10, 13:50 UTCJul 10, 16:40 UTC2h 50m
2026-07-10 MMO121P BGY → PSA Jul 10, 10:25 UTCJul 10, 11:40 UTC1h 15m
2026-07-10 MMO1210 - Jul 10, 08:00 UTCJul 10, 09:10 UTC1h 10m
2026-07-10 TDR9311 - Jul 10, 05:05 UTCJul 10, 06:10 UTC1h 5m
2026-07-09 TDR311 BGO → MLA Jul 9, 09:15 UTCJul 10, 04:10 UTC18h 55m
2026-07-08 TDR310 MLA → BGO Jul 8, 05:15 UTCJul 8, 11:15 UTC6h 0m
2026-07-07 TDR9310 - Jul 7, 15:15 UTCJul 7, 15:35 UTC20m
2026-07-07 MMO1162 - Jul 7, 13:30 UTCJul 7, 14:20 UTC50m
2026-07-07 MMO116P - Jul 7, 10:55 UTCJul 7, 11:55 UTC1h 0m
2026-07-07 MMO1160 - Jul 7, 08:15 UTCJul 7, 09:40 UTC1h 25m
2026-07-06 TAR9058 - Jul 6, 21:30 UTCJul 6, 22:40 UTC1h 10m
2026-07-06 TAR745 - Jul 6, 17:30 UTCJul 6, 19:15 UTC1h 45m
2026-07-06 TAR744 - Jul 6, 14:20 UTCJul 6, 16:15 UTC1h 55m
2026-07-06 TAR9057 - Jul 6, 10:25 UTCJul 6, 11:30 UTC1h 5m
2026-07-05 MMO1161 LMP → BGY Jul 5, 18:45 UTCJul 5, 20:05 UTC1h 20m
2026-07-05 MMO1160 - Jul 5, 16:20 UTCJul 5, 17:30 UTC1h 10m
2026-07-05 MMO3141 - Jul 5, 05:20 UTCJul 5, 14:25 UTC9h 5m
2026-07-04 MMO116P - Jul 4, 17:10 UTCJul 4, 17:45 UTC35m
2026-07-04 MMO1151 RHO → PSA Jul 4, 13:50 UTCJul 4, 16:15 UTC2h 25m
2026-07-04 MMO115P MUC → DBV Jul 4, 10:20 UTCJul 4, 12:40 UTC2h 20m

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 9A-BTL page for operator, model, and routing details .

Mode-S 501C39 frequently asked

What is Mode-S code 501C39?
501C39 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-BTL.
Where is Mode-S 501C39 registered?
Mode-S code 501C39 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501C39 broadcasting right now?
Yes. Mode-S 501C39 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501C39, octal 24016071, decimal 5,250,105.
What flights does 501C39 operate?
Mode-S 501C39 has broadcast 20 distinct callsigns, including MMO1160, MMO1161, MMO3141, MMO1240, MMO1210.