Apparatus

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sensors Mode-S transponder

02A1A5

ICAO 24-bit transponder address · allocated to Tunisia

Currently assigned to TS-INF · AIRBUS A-320

Hex
02A1A5
Octal
00520645
Decimal
172,453
Country
TN
Tail
TS-INF
Type
A320
No current signal · last broadcast 1d ago
Flights observed
2
Distinct callsigns
2
Country
TN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 02A1A5.

Country allocation

The ICAO 24-bit address 02A1A5 falls within the block assigned to Tunisia (TN) by ICAO Annex 10, Volume III. Every aircraft registered in Tunisia 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 2 distinct

Callsign Airline Flights Last seen
LBT233 - 1 2026-04-13
LBT232 Nouvelair 1 2026-04-13

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-13 LBT233 - Apr 13, 20:10 UTCApr 13, 22:15 UTC2h 5m
2026-04-13 LBT232 TUN → BER Apr 13, 16:50 UTCApr 13, 18:55 UTC2h 5m

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 TS-INF page for operator, model, and routing details .

Mode-S 02A1A5 frequently asked

What is Mode-S code 02A1A5?
02A1A5 is an ICAO 24-bit transponder address. Allocated to Tunisia. Assigned to TS-INF.
Where is Mode-S 02A1A5 registered?
Mode-S code 02A1A5 is allocated to Tunisia (TN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 02A1A5 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 02A1A5, octal 00520645, decimal 172,453.
What flights does 02A1A5 operate?
Mode-S 02A1A5 has broadcast 2 distinct callsigns, including LBT233, LBT232.