Apparatus

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sensors Mode-S transponder

39A04C

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HICM · CESSNA 510 Citation Mustang

Hex
39A04C
Octal
16320114
Decimal
3,776,588
Country
FR
Tail
F-HICM
Type
C510
Broadcasting now · callsign OYO10 · 13,250 ft
Flights observed
173
Distinct callsigns
1
Country
FR
Last broadcast
20m ago

Current position

39A04C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 39A04C 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 1 distinct

Callsign Airline Flights Last seen
OYO10 - 173 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 OYO10 - Jul 14, 10:15 UTCJul 14, 11:00 UTC45m
2026-07-13 OYO10 - Jul 13, 10:50 UTCJul 13, 11:30 UTC40m
2026-07-13 OYO10 - Jul 13, 06:01 UTCJul 13, 06:45 UTC45m
2026-07-11 OYO10 BOD → RNS Jul 11, 15:55 UTCJul 11, 16:40 UTC45m
2026-07-11 OYO10 - Jul 11, 14:30 UTCJul 11, 15:15 UTC45m
2026-07-11 OYO10 BOD → TUF Jul 11, 10:40 UTCJul 11, 11:15 UTC35m
2026-07-11 OYO10 RNS → BOD Jul 11, 09:05 UTCJul 11, 09:55 UTC50m
2026-07-09 OYO10 BOD → RNS Jul 9, 06:25 UTCJul 9, 07:10 UTC45m
2026-07-09 OYO10 PGF → BOD Jul 9, 04:35 UTCJul 9, 05:25 UTC50m
2026-07-09 OYO10 RNS → PGF Jul 9, 02:00 UTCJul 9, 03:35 UTC1h 35m
2026-07-06 OYO10 BOD → RNS Jul 6, 02:00 UTCJul 6, 02:50 UTC50m
2026-07-06 OYO10 - Jul 6, 00:10 UTCJul 6, 01:15 UTC1h 5m
2026-07-05 OYO10 BOD → GVA Jul 5, 16:40 UTCJul 5, 17:55 UTC1h 15m
2026-07-05 OYO10 - Jul 5, 15:20 UTCJul 5, 16:05 UTC45m
2026-07-05 OYO10 RNS → RNS Jul 5, 15:05 UTCJul 5, 15:10 UTC5m
2026-07-04 OYO10 - Jul 4, 12:45 UTCJul 4, 13:15 UTC30m
2026-07-04 OYO10 - Jul 4, 11:15 UTCJul 4, 12:10 UTC55m
2026-07-04 OYO10 - Jul 4, 05:05 UTCJul 4, 06:00 UTC55m
2026-07-04 OYO10 - Jul 4, 03:50 UTCJul 4, 04:15 UTC25m
2026-07-04 OYO10 RNS → RNS Jul 4, 03:35 UTCJul 4, 03:40 UTC5m
2026-07-03 OYO10 - Jul 3, 12:25 UTCJul 3, 13:40 UTC1h 15m
2026-07-03 OYO10 - Jul 3, 10:55 UTCJul 3, 11:50 UTC55m
2026-07-03 OYO10 - Jul 3, 04:45 UTCJul 3, 05:40 UTC55m
2026-07-03 OYO10 RNS → LYN Jul 3, 03:00 UTCJul 3, 04:15 UTC1h 15m
2026-07-03 OYO10 RNS → RNS Jul 3, 02:45 UTCJul 3, 02:50 UTC5m
2026-07-02 OYO10 NTE → RNS Jul 2, 05:20 UTCJul 2, 05:40 UTC20m
2026-07-02 OYO10 - Jul 2, 04:00 UTCJul 2, 04:35 UTC35m
2026-07-01 OYO10 RNS → BES Jul 1, 23:40 UTCJul 2, 00:10 UTC30m
2026-06-29 OYO10 - Jun 29, 22:10 UTCJun 29, 23:25 UTC1h 15m
2026-06-29 OYO10 - Jun 29, 11:35 UTCJun 29, 12:45 UTC1h 10m
2026-06-27 OYO10 - Jun 27, 09:24 UTCJun 27, 09:50 UTC25m
2026-06-27 OYO10 - Jun 27, 07:10 UTCJun 27, 08:39 UTC1h 30m
2026-06-24 OYO10 - Jun 24, 03:19 UTCJun 24, 04:24 UTC1h 5m
2026-06-24 OYO10 - Jun 24, 02:00 UTCJun 24, 02:49 UTC50m
2026-06-23 OYO10 - Jun 23, 21:29 UTCJun 23, 22:25 UTC55m
2026-06-23 OYO10 - Jun 23, 19:55 UTCJun 23, 20:54 UTC1h 0m
2026-06-22 OYO10 - Jun 22, 15:24 UTCJun 22, 16:14 UTC50m
2026-06-22 OYO10 - Jun 22, 13:44 UTCJun 22, 14:29 UTC45m
2026-06-22 OYO10 - Jun 22, 08:50 UTCJun 22, 09:30 UTC40m
2026-06-22 OYO10 RNS → BOD Jun 22, 07:14 UTCJun 22, 08:04 UTC50m
2026-06-21 OYO10 LBG → RNS Jun 21, 01:14 UTCJun 21, 02:35 UTC1h 20m
2026-06-20 OYO10 - Jun 20, 19:34 UTCJun 20, 20:00 UTC25m
2026-06-20 OYO10 - Jun 20, 18:04 UTCJun 20, 18:29 UTC25m
2026-06-19 OYO10 - Jun 19, 13:24 UTCJun 19, 13:44 UTC20m
2026-06-19 OYO10 BOD → NTE Jun 19, 12:04 UTCJun 19, 12:44 UTC40m
2026-06-19 OYO10 - Jun 19, 07:04 UTCJun 19, 07:39 UTC35m
2026-06-19 OYO10 - Jun 19, 06:10 UTCJun 19, 06:24 UTC15m
2026-06-18 OYO10 - Jun 18, 05:40 UTCJun 18, 06:25 UTC45m
2026-06-18 OYO10 - Jun 18, 03:35 UTCJun 18, 04:40 UTC1h 5m
2026-06-14 OYO10 - Jun 14, 18:30 UTCJun 14, 19:50 UTC1h 20m

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

Mode-S 39A04C frequently asked

What is Mode-S code 39A04C?
39A04C is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HICM.
Where is Mode-S 39A04C registered?
Mode-S code 39A04C is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39A04C broadcasting right now?
Yes. Mode-S 39A04C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39A04C, octal 16320114, decimal 3,776,588.
What flights does 39A04C operate?
Mode-S 39A04C has broadcast 1 distinct callsign, including OYO10.