Apparatus

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sensors Mode-S transponder

501C55

ICAO 24-bit transponder address · allocated to Croatia

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

Hex
501C55
Octal
24016125
Decimal
5,250,133
Country
HR
Tail
9A-BTM
Type
A320
No current signal · last broadcast 12d ago
Flights observed
338
Distinct callsigns
20
Country
HR
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S 501C55.

Country allocation

The ICAO 24-bit address 501C55 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
ISR885 Israir Airlines 19 2026-07-23
ISR886 Israir Airlines 18 2026-07-23
ISR562 Israir Airlines 16 2026-07-24
ISR561 Israir Airlines 16 2026-07-24
ISR502 - 14 2026-07-26
ISR501 - 13 2026-07-26
ISR516 - 12 2026-07-23
ISR515 Israir Airlines 12 2026-07-23
ISR724 Israir Airlines 11 2026-07-21
ISR723 Israir Airlines 9 2026-07-21
ISR596 Israir Airlines 9 2026-07-26
ISR595 Israir Airlines 9 2026-07-26
ISR582 - 9 2026-07-20
ISR581 - 9 2026-07-20
ISR173 Israir Airlines 7 2026-07-26
ISR568 Israir Airlines 6 2026-06-25
ISR174 Israir Airlines 6 2026-07-26
ISR362 - 5 2026-07-17
ISR361 - 5 2026-07-17
ISR718 Israir Airlines 4 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ISR596 PFO → TLV Jul 26, 19:05 UTCJul 26, 19:45 UTC40m
2026-07-26 ISR595 TLV → PFO Jul 26, 17:30 UTCJul 26, 18:05 UTC35m
2026-07-26 ISR174 TIV → TLV Jul 26, 13:45 UTCJul 26, 16:00 UTC2h 15m
2026-07-26 ISR173 TLV → TIV Jul 26, 09:30 UTCJul 26, 12:00 UTC2h 30m
2026-07-26 ISR502 - Jul 26, 06:50 UTCJul 26, 08:00 UTC1h 10m
2026-07-26 ISR501 - Jul 26, 04:10 UTCJul 26, 05:20 UTC1h 10m
2026-07-25 ISR780 BUD → TLV Jul 25, 20:55 UTCJul 25, 22:45 UTC1h 50m
2026-07-25 ISR779 TLV → BOJ Jul 25, 17:25 UTCJul 25, 19:30 UTC2h 5m
2026-07-25 ISR174 TIV → TLV Jul 25, 14:00 UTCJul 25, 16:00 UTC2h 0m
2026-07-25 ISR173 TLV → TIV Jul 25, 06:35 UTCJul 25, 09:10 UTC2h 35m
2026-07-24 ISR718 BUD → TLV Jul 24, 21:45 UTCJul 25, 00:25 UTC2h 40m
2026-07-24 ISR718 BUD → TLV Jul 24, 19:05 UTCJul 24, 20:20 UTC1h 15m
2026-07-24 ISR345 TLV → NAP Jul 24, 14:40 UTCJul 24, 16:50 UTC2h 10m
2026-07-24 ISR562 ATH → TLV Jul 24, 10:55 UTCJul 24, 12:35 UTC1h 40m
2026-07-24 ISR561 TLV → ATH Jul 24, 07:20 UTCJul 24, 09:10 UTC1h 50m
2026-07-23 ISR586 LCA → TLV Jul 23, 21:35 UTCJul 23, 22:10 UTC35m
2026-07-23 ISR585 TLV → LCA Jul 23, 19:40 UTCJul 23, 20:20 UTC40m
2026-07-23 ISR516 RHO → TLV Jul 23, 16:55 UTCJul 23, 18:05 UTC1h 10m
2026-07-23 ISR515 TLV → RHO Jul 23, 14:10 UTCJul 23, 15:30 UTC1h 20m
2026-07-23 ISR886 BUS → TLV Jul 23, 10:20 UTCJul 23, 12:25 UTC2h 5m
2026-07-23 ISR885 TLV → BUS Jul 23, 06:45 UTCJul 23, 08:30 UTC1h 45m
2026-07-22 ISR886 BUS → TLV Jul 22, 17:10 UTCJul 22, 19:10 UTC2h 0m
2026-07-22 ISR885 TLV → BUS Jul 22, 13:25 UTCJul 22, 15:10 UTC1h 45m
2026-07-22 ISR502 - Jul 22, 11:10 UTCJul 22, 11:45 UTC35m
2026-07-21 ISR562 ATH → TLV Jul 21, 21:35 UTCJul 21, 23:10 UTC1h 35m
2026-07-21 ISR561 TLV → ATH Jul 21, 18:05 UTCJul 21, 19:45 UTC1h 40m
2026-07-21 ISR724 BUD → TLV Jul 21, 13:25 UTCJul 21, 16:10 UTC2h 45m
2026-07-21 ISR723 TLV → BUD Jul 21, 08:50 UTCJul 21, 11:55 UTC3h 5m
2026-07-20 ISR582 - Jul 20, 19:05 UTCJul 20, 19:40 UTC35m
2026-07-20 ISR581 TLV → LCA Jul 20, 16:00 UTCJul 20, 16:40 UTC40m
2026-07-20 ISR522 RHO → TLV Jul 20, 12:55 UTCJul 20, 14:10 UTC1h 15m
2026-07-20 ISR521 TLV → RHO Jul 20, 10:10 UTCJul 20, 11:20 UTC1h 10m
2026-07-20 ISR596 PFO → TLV Jul 20, 08:20 UTCJul 20, 09:05 UTC45m
2026-07-20 ISR595 TLV → PFO Jul 20, 06:25 UTCJul 20, 07:10 UTC45m
2026-07-19 ISR582 LCA → TLV Jul 19, 22:20 UTCJul 19, 23:00 UTC40m
2026-07-19 ISR581 TLV → AMM Jul 19, 18:30 UTCJul 19, 19:10 UTC40m
2026-07-19 ISR516 RHO → TLV Jul 19, 16:10 UTCJul 19, 17:25 UTC1h 15m
2026-07-19 ISR515 TLV → RHO Jul 19, 13:20 UTCJul 19, 14:30 UTC1h 10m
2026-07-19 ISR886 BUS → TLV Jul 19, 09:40 UTCJul 19, 11:45 UTC2h 5m
2026-07-19 ISR885 TLV → BUS Jul 19, 06:30 UTCJul 19, 08:15 UTC1h 45m
2026-07-18 ISR170 - Jul 18, 18:25 UTCJul 18, 20:25 UTC2h 0m
2026-07-18 ISR169 - Jul 18, 14:25 UTCJul 18, 16:40 UTC2h 15m
2026-07-18 ISR174 - Jul 18, 10:50 UTCJul 18, 13:05 UTC2h 15m
2026-07-18 ISR173 TLV → TIV Jul 18, 06:30 UTCJul 18, 08:50 UTC2h 20m
2026-07-17 ISR362 - Jul 17, 17:25 UTCJul 17, 19:45 UTC2h 20m
2026-07-17 ISR361 - Jul 17, 13:40 UTCJul 17, 16:24 UTC2h 45m
2026-07-17 ISR562 ATH → TLV Jul 17, 10:30 UTCJul 17, 12:04 UTC1h 35m
2026-07-17 ISR561 TLV → ATH Jul 17, 06:20 UTCJul 17, 08:10 UTC1h 50m
2026-07-16 ISR596 - Jul 16, 22:10 UTCJul 16, 22:49 UTC40m
2026-07-16 ISR595 TLV → PFO Jul 16, 20:29 UTCJul 16, 21:15 UTC45m

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

Mode-S 501C55 frequently asked

What is Mode-S code 501C55?
501C55 is an ICAO 24-bit transponder address. Allocated to Croatia. Assigned to 9A-BTM.
Where is Mode-S 501C55 registered?
Mode-S code 501C55 is allocated to Croatia (HR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 501C55 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 501C55, octal 24016125, decimal 5,250,133.
What flights does 501C55 operate?
Mode-S 501C55 has broadcast 20 distinct callsigns, including ISR885, ISR886, ISR562, ISR561, ISR502.