Apparatus

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sensors Mode-S transponder

3A4DC0

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-OTOA · BOEING 787-9 Dreamliner

Hex
3A4DC0
Octal
16446700
Decimal
3,820,992
Country
FR
Tail
F-OTOA
Type
B789
No current signal · last broadcast Jul 26, 13:45 UTC
Flights observed
179
Distinct callsigns
12
Country
FR
Last broadcast
Jul 26, 13:45 UTC

Last known position

Most recent position reported by Mode-S 3A4DC0.

Country allocation

The ICAO 24-bit address 3A4DC0 falls within the block assigned to France (FR) by ICAO Annex 10, Volume III. Every aircraft registered in France 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 12 distinct

Callsign Airline Flights Last seen
THT8 Air Tahiti Nui 71 2026-07-23
THT7 - 67 2026-07-23
THT101 - 11 2026-07-13
THT102 - 9 2026-07-14
THT88 Air Tahiti Nui 4 2026-06-07
THT2 Air Tahiti Nui 4 2026-07-25
THT111 Air Tahiti Nui 4 2026-07-26
THT87 Air Tahiti Nui 3 2026-06-05
ACI601 Air Caledonie International 2 2026-07-18
ACI600 Air Caledonie International 2 2026-07-18
THT502 Air Tahiti Nui 1 2026-07-03
THT487 Air Tahiti Nui 1 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THT111 LAX → PPT Jul 26, 06:20 UTCJul 26, 13:45 UTC7h 26m
2026-07-25 THT2 PPT → LAX Jul 25, 08:40 UTCJul 25, 16:15 UTC7h 35m
2026-07-23 THT7 - Jul 23, 23:45 UTCJul 24, 07:00 UTC7h 15m
2026-07-23 THT7 - Jul 23, 10:30 UTCJul 23, 21:30 UTC11h 0m
2026-07-23 THT8 LAX → CDG Jul 23, 05:45 UTCJul 23, 06:35 UTC50m
2026-07-22 THT8 LAX → CDG Jul 22, 20:40 UTCJul 23, 05:40 UTC9h 0m
2026-07-21 THT8 LAX → CDG Jul 21, 23:35 UTCJul 22, 17:35 UTC18h 0m
2026-07-21 THT7 CDG → LAX Jul 21, 10:25 UTCJul 21, 21:10 UTC10h 45m
2026-07-20 THT8 LAX → CDG Jul 20, 20:45 UTCJul 21, 06:50 UTC10h 4m
2026-07-20 THT8 LAX → CDG Jul 20, 09:45 UTCJul 20, 17:30 UTC7h 45m
2026-07-19 THT111 LAX → PPT Jul 19, 06:00 UTCJul 19, 13:40 UTC7h 40m
2026-07-18 THT2 - Jul 18, 10:35 UTCJul 18, 18:15 UTC7h 40m
2026-07-18 ACI600 NOU → PPT Jul 18, 07:50 UTCJul 18, 08:30 UTC40m
2026-07-18 ACI600 NOU → PPT Jul 18, 03:45 UTCJul 18, 03:55 UTC10m
2026-07-18 ACI601 PPT → NOU Jul 18, 00:45 UTCJul 18, 00:55 UTC10m
2026-07-17 ACI601 - Jul 17, 18:50 UTCJul 17, 19:15 UTC25m
2026-07-14 THT102 - Jul 14, 03:35 UTCJul 14, 07:50 UTC4h 15m
2026-07-13 THT101 PPT → AKL Jul 13, 18:35 UTCJul 14, 00:00 UTC5h 25m
2026-07-13 THT101 LAX → PPT Jul 13, 06:25 UTCJul 13, 13:55 UTC7h 30m
2026-07-12 THT102 - Jul 12, 10:20 UTCJul 12, 17:50 UTC7h 30m
2026-07-12 THT102 - Jul 12, 03:55 UTCJul 12, 08:10 UTC4h 15m
2026-07-11 THT101 - Jul 11, 19:10 UTCJul 12, 01:00 UTC5h 50m
2026-07-11 THT101 - Jul 11, 06:15 UTCJul 11, 13:50 UTC7h 35m
2026-07-09 THT102 - Jul 9, 10:10 UTCJul 9, 17:45 UTC7h 35m
2026-07-09 THT102 - Jul 9, 03:35 UTCJul 9, 07:50 UTC4h 15m
2026-07-08 THT101 PPT → AKL Jul 8, 18:50 UTCJul 9, 00:10 UTC5h 20m
2026-07-08 THT101 - Jul 8, 06:15 UTCJul 8, 13:40 UTC7h 25m
2026-07-07 THT102 - Jul 7, 10:00 UTCJul 7, 17:35 UTC7h 35m
2026-07-07 THT102 - Jul 7, 03:30 UTCJul 7, 07:45 UTC4h 15m
2026-07-06 THT101 - Jul 6, 19:00 UTCJul 7, 00:30 UTC5h 30m
2026-07-06 THT101 - Jul 6, 06:25 UTCJul 6, 14:10 UTC7h 45m
2026-07-05 THT102 - Jul 5, 10:45 UTCJul 5, 18:20 UTC7h 35m
2026-07-05 THT102 - Jul 5, 04:05 UTCJul 5, 08:15 UTC4h 10m
2026-07-04 THT101 - Jul 4, 18:40 UTCJul 5, 00:10 UTC5h 30m
2026-07-04 THT101 - Jul 4, 06:30 UTCJul 4, 14:00 UTC7h 30m
2026-07-03 THT502 PPT → LAX Jul 3, 08:40 UTCJul 3, 16:15 UTC7h 35m
2026-06-30 THT7 - Jun 30, 23:45 UTCJul 1, 07:20 UTC7h 35m
2026-06-30 THT7 - Jun 30, 10:45 UTCJun 30, 21:20 UTC10h 35m
2026-06-29 THT8 - Jun 29, 20:44 UTCJun 30, 06:25 UTC9h 41m
2026-06-29 THT8 - Jun 29, 09:44 UTCJun 29, 17:24 UTC7h 40m
2026-06-28 THT7 - Jun 28, 23:29 UTCJun 29, 07:20 UTC7h 50m
2026-06-28 THT7 - Jun 28, 10:35 UTCJun 28, 20:50 UTC10h 15m
2026-06-27 THT8 - Jun 27, 20:55 UTCJun 28, 06:55 UTC10h 0m
2026-06-27 THT8 - Jun 27, 10:29 UTCJun 27, 18:09 UTC7h 40m
2026-06-27 THT7 - Jun 27, 01:00 UTCJun 27, 08:14 UTC7h 15m
2026-06-26 THT7 - Jun 26, 11:24 UTCJun 26, 22:05 UTC10h 40m
2026-06-25 THT8 - Jun 25, 20:45 UTCJun 26, 06:50 UTC10h 5m
2026-06-25 THT8 - Jun 25, 09:55 UTCJun 25, 17:34 UTC7h 40m
2026-06-24 THT101 - Jun 24, 06:25 UTCJun 24, 13:54 UTC7h 30m
2026-06-19 THT8 - Jun 19, 09:55 UTCJun 19, 17:24 UTC7h 30m

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 F-OTOA page for operator, model, and routing details .

Mode-S 3A4DC0 frequently asked

What is Mode-S code 3A4DC0?
3A4DC0 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-OTOA.
Where is Mode-S 3A4DC0 registered?
Mode-S code 3A4DC0 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3A4DC0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3A4DC0, octal 16446700, decimal 3,820,992.
What flights does 3A4DC0 operate?
Mode-S 3A4DC0 has broadcast 12 distinct callsigns, including THT8, THT7, THT101, THT102, THT88.