sensors Mode-S transponder

02A1A9

ICAO 24-bit transponder address · allocated to Tunisia

Hex
02A1A9
Octal
00520651
Decimal
172,457
Country
TN
No current signal · last broadcast 1h ago
Flights observed
199
Distinct callsigns
20
Country
TN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 02A1A9.

Country allocation

The ICAO 24-bit address 02A1A9 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
LBT520 - 14 2026-07-04
LBT521 - 12 2026-07-04
LBT641 - 7 2026-07-04
LBT517 - 7 2026-06-27
LBT640 - 6 2026-07-04
LBT599 - 6 2026-06-29
LBT516 - 6 2026-06-27
LBT204 - 6 2026-06-25
LBT166 - 6 2026-07-02
LBT691 Nouvelair 5 2026-06-22
LBT690 Nouvelair 5 2026-06-22
LBT634 - 5 2026-06-30
LBT598 - 5 2026-06-29
LBT587 - 5 2026-06-28
LBT205 - 5 2026-06-26
LBT184 - 5 2026-06-28
LBT844 Nouvelair 4 2026-06-11
LBT714 - 4 2026-06-20
LBT635 - 4 2026-06-30
LBT613 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 LBT521 - Jul 4, 21:55 UTCJul 4, 23:25 UTC1h 30m
2026-07-04 LBT520 BCN → CDG Jul 4, 15:35 UTCJul 4, 20:30 UTC4h 55m
2026-07-04 LBT608 - Jul 4, 12:20 UTCJul 4, 13:45 UTC1h 25m
2026-07-04 LBT641 - Jul 4, 08:40 UTCJul 4, 10:55 UTC2h 15m
2026-07-04 LBT640 - Jul 4, 04:50 UTCJul 4, 07:05 UTC2h 15m
2026-07-03 LBT719 - Jul 3, 20:50 UTCJul 3, 22:30 UTC1h 40m
2026-07-03 LBT718 - Jul 3, 18:10 UTCJul 3, 19:45 UTC1h 35m
2026-07-03 LBT613 - Jul 3, 15:30 UTCJul 3, 16:30 UTC1h 0m
2026-07-03 LBT612 - Jul 3, 12:55 UTCJul 3, 14:05 UTC1h 10m
2026-07-03 LBT641 - Jul 3, 09:10 UTCJul 3, 11:15 UTC2h 5m
2026-07-03 LBT640 - Jul 3, 04:45 UTCJul 3, 06:50 UTC2h 5m
2026-07-02 LBT609 - Jul 2, 22:25 UTCJul 2, 23:20 UTC55m
2026-07-02 LBT608 - Jul 2, 16:00 UTCJul 2, 20:40 UTC4h 40m
2026-07-02 LBT166 - Jul 2, 12:55 UTCJul 2, 14:40 UTC1h 45m
2026-07-02 LBT207 - Jul 2, 09:30 UTCJul 2, 11:25 UTC1h 55m
2026-07-02 LBT206 - Jul 2, 05:40 UTCJul 2, 08:00 UTC2h 20m
2026-07-01 LBT521 - Jul 1, 21:10 UTCJul 1, 22:40 UTC1h 30m
2026-07-01 LBT520 - Jul 1, 17:40 UTCJul 1, 19:50 UTC2h 10m
2026-07-01 LBT233 - Jul 1, 14:05 UTCJul 1, 16:35 UTC2h 30m
2026-07-01 LBT232 - Jul 1, 09:40 UTCJul 1, 12:10 UTC2h 30m
2026-06-30 LBT635 - Jun 30, 17:10 UTCJun 30, 18:30 UTC1h 20m
2026-06-30 LBT634 - Jun 30, 14:25 UTCJun 30, 15:45 UTC1h 20m
2026-06-30 LBT641 - Jun 30, 10:25 UTCJun 30, 12:40 UTC2h 15m
2026-06-30 LBT640 - Jun 30, 06:40 UTCJun 30, 08:45 UTC2h 5m
2026-06-29 LBT777 - Jun 29, 14:14 UTCJun 29, 15:54 UTC1h 40m
2026-06-29 LBT776 - Jun 29, 11:04 UTCJun 29, 12:49 UTC1h 45m
2026-06-29 LBT599 LYS → TUN Jun 29, 08:04 UTCJun 29, 09:40 UTC1h 35m
2026-06-29 LBT598 TUN → LYS Jun 29, 05:04 UTCJun 29, 06:44 UTC1h 40m
2026-06-28 LBT587 NCE → TUN Jun 28, 22:24 UTCJun 28, 23:44 UTC1h 20m
2026-06-28 LBT185 - Jun 28, 16:39 UTCJun 28, 20:39 UTC4h 0m
2026-06-28 LBT184 - Jun 28, 13:55 UTCJun 28, 15:14 UTC1h 20m
2026-06-28 LBT511 - Jun 28, 10:00 UTCJun 28, 12:19 UTC2h 20m
2026-06-28 LBT510 - Jun 28, 06:30 UTCJun 28, 08:25 UTC1h 55m
2026-06-27 LBT517 - Jun 27, 15:14 UTCJun 27, 16:20 UTC1h 5m
2026-06-27 LBT516 - Jun 27, 12:25 UTCJun 27, 13:40 UTC1h 15m
2026-06-27 LBT167 - Jun 27, 09:09 UTCJun 27, 10:40 UTC1h 30m
2026-06-27 LBT166 - Jun 27, 05:29 UTCJun 27, 07:04 UTC1h 35m
2026-06-26 LBT587 - Jun 26, 21:24 UTCJun 26, 22:29 UTC1h 5m
2026-06-26 LBT586 TUN → NCE Jun 26, 19:04 UTCJun 26, 20:15 UTC1h 10m
2026-06-26 LBT731 - Jun 26, 15:39 UTCJun 26, 17:29 UTC1h 50m
2026-06-26 LBT730 - Jun 26, 12:00 UTCJun 26, 13:49 UTC1h 50m
2026-06-26 LBT205 - Jun 26, 08:24 UTCJun 26, 10:30 UTC2h 5m
2026-06-25 LBT204 - Jun 25, 21:55 UTCJun 26, 06:39 UTC8h 45m
2026-06-25 LBT608 - Jun 25, 19:09 UTCJun 25, 20:30 UTC1h 20m
2026-06-25 LBT167 - Jun 25, 15:59 UTCJun 25, 17:30 UTC1h 30m
2026-06-25 LBT166 - Jun 25, 13:00 UTCJun 25, 14:39 UTC1h 40m
2026-06-25 LBT205 - Jun 25, 09:10 UTCJun 25, 11:19 UTC2h 10m
2026-06-25 LBT204 - Jun 25, 05:25 UTCJun 25, 07:30 UTC2h 5m
2026-06-24 LBT521 - Jun 24, 20:49 UTCJun 24, 22:39 UTC1h 50m
2026-06-24 LBT520 - Jun 24, 17:14 UTCJun 24, 19:15 UTC2h 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.

Mode-S 02A1A9 frequently asked

What is Mode-S code 02A1A9?
02A1A9 is an ICAO 24-bit transponder address. Allocated to Tunisia.
Where is Mode-S 02A1A9 registered?
Mode-S code 02A1A9 is allocated to Tunisia (TN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 02A1A9 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 02A1A9, octal 00520651, decimal 172,457.
What flights does 02A1A9 operate?
Mode-S 02A1A9 has broadcast 20 distinct callsigns, including LBT520, LBT521, LBT641, LBT517, LBT640.