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
Broadcasting now · callsign THT8 · 38,000 ft
Flights observed
101
Distinct callsigns
6
Country
FR
Last broadcast
7m ago

Current position

3A4DC0 is currently broadcasting. Map zoomed to live position.

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 6 distinct

Callsign Airline Flights Last seen
THT8 Air Tahiti Nui 49 2026-05-29
THT7 - 46 2026-05-28
THT88 Air Tahiti Nui 2 2026-05-04
THT87 Air Tahiti Nui 2 2026-05-04
THT2 Air Tahiti Nui 1 2026-05-02
THT111 Air Tahiti Nui 1 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 THT8 LAX → CDG May 29, 21:00 UTCMay 30, 06:00 UTC9h 0m
2026-05-29 THT8 LAX → CDG May 29, 16:45 UTCMay 29, 17:25 UTC40m
2026-05-29 THT8 LAX → CDG May 29, 09:50 UTCMay 29, 10:30 UTC40m
2026-05-28 THT7 - May 28, 23:40 UTCMay 29, 07:20 UTC7h 40m
2026-05-28 THT7 - May 28, 10:30 UTCMay 28, 21:10 UTC10h 40m
2026-05-27 THT8 LAX → CDG May 27, 20:55 UTCMay 28, 07:05 UTC10h 10m
2026-05-27 THT8 LAX → CDG May 27, 10:05 UTCMay 27, 17:30 UTC7h 25m
2026-05-25 THT7 - May 25, 23:40 UTCMay 26, 07:34 UTC7h 55m
2026-05-25 THT7 - May 25, 10:25 UTCMay 25, 21:15 UTC10h 49m
2026-05-24 THT8 LAX → CDG May 24, 20:50 UTCMay 25, 06:55 UTC10h 5m
2026-05-24 THT8 LAX → CDG May 24, 10:25 UTCMay 24, 17:25 UTC7h 0m
2026-05-24 THT7 - May 24, 00:05 UTCMay 24, 08:05 UTC8h 0m
2026-05-23 THT7 - May 23, 10:30 UTCMay 23, 21:15 UTC10h 45m
2026-05-22 THT8 LAX → CDG May 22, 20:40 UTCMay 23, 06:40 UTC9h 59m
2026-05-22 THT8 LAX → CDG May 22, 09:55 UTCMay 22, 17:10 UTC7h 15m
2026-05-21 THT7 - May 21, 23:40 UTCMay 22, 07:25 UTC7h 45m
2026-05-21 THT7 - May 21, 10:20 UTCMay 21, 20:50 UTC10h 30m
2026-05-21 THT8 LAX → CDG May 21, 06:10 UTCMay 21, 06:35 UTC25m
2026-05-20 THT8 LAX → CDG May 20, 20:45 UTCMay 21, 06:05 UTC9h 20m
2026-05-20 THT8 LAX → CDG May 20, 09:50 UTCMay 20, 17:15 UTC7h 25m
2026-05-18 THT7 - May 18, 23:50 UTCMay 19, 07:40 UTC7h 50m
2026-05-18 THT7 - May 18, 10:55 UTCMay 18, 21:45 UTC10h 49m
2026-05-17 THT8 LAX → CDG May 17, 20:40 UTCMay 18, 06:45 UTC10h 5m
2026-05-17 THT8 LAX → CDG May 17, 10:05 UTCMay 17, 17:55 UTC7h 50m
2026-05-16 THT7 - May 16, 23:55 UTCMay 17, 07:20 UTC7h 25m
2026-05-16 THT7 - May 16, 10:31 UTCMay 16, 21:15 UTC10h 44m
2026-05-15 THT8 LAX → CDG May 15, 20:50 UTCMay 16, 06:45 UTC9h 56m
2026-05-15 THT8 LAX → CDG May 15, 10:05 UTCMay 15, 17:50 UTC7h 44m
2026-05-15 THT7 - May 15, 00:10 UTCMay 15, 07:45 UTC7h 35m
2026-05-14 THT7 - May 14, 10:40 UTCMay 14, 21:40 UTC11h 0m
2026-05-13 THT8 LAX → CDG May 13, 21:00 UTCMay 14, 07:05 UTC10h 5m
2026-05-13 THT8 LAX → CDG May 13, 09:55 UTCMay 13, 17:30 UTC7h 35m
2026-05-12 THT7 - May 12, 07:05 UTCMay 12, 07:55 UTC50m
2026-05-11 THT7 - May 11, 10:30 UTCMay 11, 21:30 UTC11h 1m
2026-05-10 THT8 LAX → CDG May 10, 20:45 UTCMay 11, 07:15 UTC10h 30m
2026-05-10 THT8 LAX → CDG May 10, 10:10 UTCMay 10, 17:55 UTC7h 45m
2026-05-09 THT7 - May 9, 23:35 UTCMay 10, 07:15 UTC7h 40m
2026-05-09 THT7 - May 9, 10:30 UTCMay 9, 21:09 UTC10h 40m
2026-05-08 THT8 LAX → CDG May 8, 20:55 UTCMay 9, 07:10 UTC10h 15m
2026-05-08 THT8 LAX → CDG May 8, 10:54 UTCMay 8, 18:20 UTC7h 25m
2026-05-07 THT7 - May 7, 23:34 UTCMay 8, 07:09 UTC7h 35m
2026-05-07 THT7 - May 7, 10:30 UTCMay 7, 20:45 UTC10h 15m
2026-05-06 THT8 LAX → CDG May 6, 20:50 UTCMay 7, 07:00 UTC10h 10m
2026-05-06 THT8 LAX → CDG May 6, 10:05 UTCMay 6, 17:35 UTC7h 29m
2026-05-04 THT87 NRT → PPT May 4, 19:55 UTCMay 4, 20:25 UTC30m
2026-05-04 THT87 NRT → PPT May 4, 09:50 UTCMay 4, 10:20 UTC30m
2026-05-04 THT88 PPT → NRT May 4, 06:10 UTCMay 4, 06:55 UTC45m
2026-05-03 THT88 PPT → NRT May 3, 19:40 UTCMay 3, 19:50 UTC10m
2026-05-03 THT111 LAX → PPT May 3, 06:00 UTCMay 3, 14:00 UTC8h 0m
2026-05-02 THT2 PPT → LAX May 2, 08:35 UTCMay 2, 15:45 UTC7h 10m

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?
Yes. Mode-S 3A4DC0 is currently airborne.
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 6 distinct callsigns, including THT8, THT7, THT88, THT87, THT2.