sensors Mode-S transponder

02A1B4

ICAO 24-bit transponder address · allocated to Tunisia

Currently assigned to TS-INU · AIRBUS A-320

Hex
02A1B4
Octal
00520664
Decimal
172,468
Country
TN
Tail
TS-INU
Type
A320
No current signal · last broadcast 1h ago
Flights observed
304
Distinct callsigns
20
Country
TN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 02A1B4.

Country allocation

The ICAO 24-bit address 02A1B4 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 20 distinct

Callsign Airline Flights Last seen
LBT542 - 10 2026-07-02
LBT554 - 9 2026-07-12
LBT543 - 9 2026-06-28
LBT508 - 8 2026-07-09
LBT730 - 7 2026-07-04
LBT509 - 7 2026-07-09
LBT555 - 6 2026-07-12
LBT215 - 6 2026-06-28
LBT214 - 6 2026-06-28
LBT762 - 5 2026-07-08
LBT510 Nouvelair 5 2026-06-01
LBT731 - 4 2026-07-04
LBT521 Nouvelair 4 2026-05-15
LBT397 Nouvelair 4 2026-05-24
LBT396 Nouvelair 4 2026-05-22
LBT232 Nouvelair 4 2026-05-21
LBT763 - 3 2026-07-08
LBT7425 - 3 2026-06-25
LBT7424 Nouvelair 3 2026-06-25
LBT732 Nouvelair 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LBT753 - Jul 14, 14:40 UTCJul 14, 15:00 UTC20m
2026-07-14 LBT752 - Jul 14, 11:25 UTCJul 14, 13:10 UTC1h 45m
2026-07-14 LBT795 - Jul 14, 07:35 UTCJul 14, 09:30 UTC1h 55m
2026-07-14 LBT794 - Jul 14, 03:10 UTCJul 14, 06:00 UTC2h 50m
2026-07-13 LBT743 - Jul 13, 14:20 UTCJul 13, 16:45 UTC2h 25m
2026-07-13 LBT742 - Jul 13, 10:35 UTCJul 13, 12:50 UTC2h 15m
2026-07-13 LBT799 - Jul 13, 07:20 UTCJul 13, 09:15 UTC1h 55m
2026-07-13 LBT798 - Jul 13, 03:25 UTCJul 13, 06:01 UTC2h 35m
2026-07-12 LBT7639 - Jul 12, 22:00 UTCJul 13, 00:25 UTC2h 25m
2026-07-12 LBT7638 - Jul 12, 18:01 UTCJul 12, 20:35 UTC2h 35m
2026-07-12 LBT555 - Jul 12, 11:15 UTCJul 12, 13:05 UTC1h 50m
2026-07-12 LBT554 DJE → CDG Jul 12, 06:10 UTCJul 12, 08:55 UTC2h 45m
2026-07-11 LBT6149 - Jul 11, 22:20 UTCJul 12, 00:40 UTC2h 20m
2026-07-11 LBT6148 - Jul 11, 18:40 UTCJul 11, 20:50 UTC2h 10m
2026-07-11 LBT6148 - Jul 11, 17:55 UTCJul 11, 18:05 UTC10m
2026-07-11 LBT2423 - Jul 11, 13:45 UTCJul 11, 16:35 UTC2h 50m
2026-07-11 LBT2422 - Jul 11, 09:40 UTCJul 11, 12:15 UTC2h 35m
2026-07-10 LBT575 - Jul 10, 22:40 UTCJul 11, 00:45 UTC2h 5m
2026-07-10 LBT574 - Jul 10, 19:05 UTCJul 10, 21:05 UTC2h 0m
2026-07-10 LBT135 BSL → DJE Jul 10, 15:20 UTCJul 10, 17:40 UTC2h 20m
2026-07-10 LBT134 DJE → BSL Jul 10, 10:50 UTCJul 10, 13:15 UTC2h 25m
2026-07-10 LBT703 - Jul 10, 07:05 UTCJul 10, 09:25 UTC2h 20m
2026-07-10 LBT702 - Jul 10, 03:00 UTCJul 10, 05:30 UTC2h 30m
2026-07-09 LBT7633 - Jul 9, 21:00 UTCJul 9, 23:20 UTC2h 20m
2026-07-09 LBT7632 DJE → KTW Jul 9, 17:20 UTCJul 9, 19:50 UTC2h 30m
2026-07-09 LBT509 - Jul 9, 13:45 UTCJul 9, 16:00 UTC2h 15m
2026-07-09 LBT508 DJE → CDG Jul 9, 09:05 UTCJul 9, 11:45 UTC2h 40m
2026-07-09 LBT7693 - Jul 9, 05:15 UTCJul 9, 07:35 UTC2h 20m
2026-07-09 LBT7692 - Jul 9, 01:15 UTCJul 9, 04:00 UTC2h 45m
2026-07-08 LBT763 - Jul 8, 14:00 UTCJul 8, 16:30 UTC2h 30m
2026-07-08 LBT762 - Jul 8, 10:05 UTCJul 8, 12:50 UTC2h 45m
2026-07-08 LBT7033 - Jul 8, 06:15 UTCJul 8, 08:40 UTC2h 25m
2026-07-08 LBT7032 - Jul 8, 02:00 UTCJul 8, 04:35 UTC2h 35m
2026-07-07 LBT2345 - Jul 7, 17:40 UTCJul 7, 20:10 UTC2h 30m
2026-07-07 LBT2344 DJE → DUS Jul 7, 13:30 UTCJul 7, 16:20 UTC2h 50m
2026-07-07 LBT737 - Jul 7, 08:45 UTCJul 7, 11:00 UTC2h 15m
2026-07-07 LBT736 - Jul 7, 05:05 UTCJul 7, 07:25 UTC2h 20m
2026-07-06 LBT703 - Jul 6, 21:05 UTCJul 6, 23:15 UTC2h 10m
2026-07-06 LBT702 - Jul 6, 16:50 UTCJul 6, 19:40 UTC2h 50m
2026-07-06 LBT135 - Jul 6, 13:25 UTCJul 6, 15:25 UTC2h 0m
2026-07-06 LBT134 - Jul 6, 09:55 UTCJul 6, 12:10 UTC2h 15m
2026-07-06 LBT513 - Jul 6, 07:05 UTCJul 6, 08:30 UTC1h 25m
2026-07-06 LBT512 - Jul 6, 04:10 UTCJul 6, 05:50 UTC1h 40m
2026-07-05 LBT7639 - Jul 5, 22:05 UTCJul 6, 00:25 UTC2h 20m
2026-07-05 LBT7638 - Jul 5, 18:15 UTCJul 5, 20:55 UTC2h 40m
2026-07-05 LBT749 - Jul 5, 14:45 UTCJul 5, 17:10 UTC2h 25m
2026-07-05 LBT748 - Jul 5, 10:15 UTCJul 5, 12:55 UTC2h 40m
2026-07-05 LBT741 - Jul 5, 07:05 UTCJul 5, 08:55 UTC1h 50m
2026-07-05 LBT740 - Jul 5, 04:15 UTCJul 5, 05:55 UTC1h 40m
2026-07-04 LBT739 - Jul 4, 20:35 UTCJul 5, 02:35 UTC6h 0m

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

Mode-S 02A1B4 frequently asked

What is Mode-S code 02A1B4?
02A1B4 is an ICAO 24-bit transponder address. Allocated to Tunisia. Assigned to TS-INU.
Where is Mode-S 02A1B4 registered?
Mode-S code 02A1B4 is allocated to Tunisia (TN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 02A1B4 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 02A1B4, octal 00520664, decimal 172,468.
What flights does 02A1B4 operate?
Mode-S 02A1B4 has broadcast 20 distinct callsigns, including LBT542, LBT554, LBT543, LBT508, LBT730.