sensors Mode-S transponder
3B7542
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-UJCU · AIRBUS A-330-200
- Hex
- 3B7542
- Octal
- 16672502
- Decimal
- 3,896,642
- Country
- FR
- Tail
- F-UJCU
- Type
- A332
- Flights observed
- 62
- Distinct callsigns
- 17
- Country
- FR
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 3B7542 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CTM1073 | - | 11 | 2026-06-04 |
| CTM1016 | - | 8 | 2026-06-06 |
| CTM021 | - | 6 | 2026-05-13 |
| CTM1079 | - | 5 | 2026-05-01 |
| CTM1076 | - | 4 | 2026-06-19 |
| CTM1078 | - | 3 | 2026-06-18 |
| CTM1033 | - | 3 | 2026-06-21 |
| CTM1028 | - | 3 | 2026-05-04 |
| CTM1015 | - | 3 | 2026-07-14 |
| CTM1080 | - | 2 | 2026-05-24 |
| CTM1077 | - | 2 | 2026-05-21 |
| CTM1075 | - | 2 | 2026-06-02 |
| CTM1040 | - | 2 | 2026-07-03 |
| CTM1036 | - | 2 | 2026-06-26 |
| CTM1027 | - | 2 | 2026-05-20 |
| CTM1026 | - | 2 | 2026-04-29 |
| CTM1023 | - | 2 | 2026-07-08 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | CTM1015 | - | Jul 14, 06:00 UTC | Jul 14, 06:25 UTC | 25m |
| 2026-07-13 | CTM1015 | - | Jul 13, 22:25 UTC | Jul 14, 04:05 UTC | 5h 40m |
| 2026-07-13 | CTM1015 | - | Jul 13, 09:45 UTC | Jul 13, 20:25 UTC | 10h 40m |
| 2026-07-08 | CTM1023 | - | Jul 8, 05:10 UTC | Jul 8, 07:30 UTC | 2h 20m |
| 2026-07-06 | CTM1023 | - | Jul 6, 07:20 UTC | Jul 6, 10:30 UTC | 3h 10m |
| 2026-07-03 | CTM1040 | - | Jul 3, 13:20 UTC | Jul 3, 16:30 UTC | 3h 10m |
| 2026-07-01 | CTM1040 | - | Jul 1, 08:05 UTC | Jul 1, 11:05 UTC | 3h 0m |
| 2026-06-26 | CTM1036 | - | Jun 26, 18:24 UTC | Jun 26, 21:59 UTC | 3h 35m |
| 2026-06-24 | CTM1036 | - | Jun 24, 07:40 UTC | Jun 24, 10:39 UTC | 3h 0m |
| 2026-06-21 | CTM1033 | - | Jun 21, 16:25 UTC | Jun 21, 19:55 UTC | 3h 30m |
| 2026-06-20 | CTM1033 | - | Jun 20, 22:35 UTC | Jun 21, 19:55 UTC | 21h 20m |
| 2026-06-20 | CTM1033 | - | Jun 20, 20:20 UTC | Jun 21, 16:30 UTC | 20h 10m |
| 2026-06-19 | CTM1076 | - | Jun 19, 08:29 UTC | Jun 19, 09:09 UTC | 40m |
| 2026-06-19 | CTM1076 | - | Jun 19, 05:30 UTC | Jun 19, 06:24 UTC | 55m |
| 2026-06-18 | CTM1078 | - | Jun 18, 18:35 UTC | Jun 18, 22:05 UTC | 3h 30m |
| 2026-06-18 | CTM1078 | - | Jun 18, 15:45 UTC | Jun 18, 16:10 UTC | 25m |
| 2026-06-18 | CTM1078 | - | Jun 18, 10:15 UTC | Jun 18, 13:40 UTC | 3h 25m |
| 2026-06-06 | CTM1016 | - | Jun 6, 12:49 UTC | Jun 6, 15:44 UTC | 2h 55m |
| 2026-06-05 | CTM1016 | - | Jun 5, 08:30 UTC | Jun 5, 11:25 UTC | 2h 55m |
| 2026-06-04 | CTM1073 | - | Jun 4, 13:55 UTC | Jun 4, 14:45 UTC | 50m |
| 2026-06-04 | CTM1073 | - | Jun 4, 09:00 UTC | Jun 4, 09:40 UTC | 40m |
| 2026-06-02 | CTM1075 | - | Jun 2, 14:10 UTC | Jun 2, 16:45 UTC | 2h 35m |
| 2026-06-02 | CTM1075 | - | Jun 2, 10:05 UTC | Jun 2, 12:30 UTC | 2h 25m |
| 2026-05-28 | CTM1076 | - | May 28, 13:50 UTC | May 28, 17:05 UTC | 3h 15m |
| 2026-05-28 | CTM1076 | - | May 28, 07:35 UTC | May 28, 11:00 UTC | 3h 25m |
| 2026-05-24 | CTM1080 | - | May 24, 13:55 UTC | May 24, 16:10 UTC | 2h 15m |
| 2026-05-24 | CTM1080 | - | May 24, 09:55 UTC | May 24, 12:20 UTC | 2h 25m |
| 2026-05-21 | CTM1077 | - | May 21, 10:15 UTC | May 21, 11:00 UTC | 45m |
| 2026-05-21 | CTM1077 | - | May 21, 08:05 UTC | May 21, 08:40 UTC | 35m |
| 2026-05-20 | CTM1027 | - | May 20, 03:55 UTC | May 20, 07:20 UTC | 3h 26m |
| 2026-05-18 | CTM1027 | - | May 18, 10:15 UTC | May 18, 13:50 UTC | 3h 35m |
| 2026-05-13 | CTM021 | - | May 13, 20:30 UTC | May 13, 21:35 UTC | 1h 5m |
| 2026-05-13 | CTM021 | - | May 13, 14:00 UTC | May 13, 18:40 UTC | 4h 40m |
| 2026-05-08 | CTM021 | - | May 8, 04:39 UTC | May 8, 04:49 UTC | 10m |
| 2026-05-07 | CTM021 | - | May 7, 21:00 UTC | May 7, 21:25 UTC | 25m |
| 2026-05-07 | CTM021 | - | May 7, 14:20 UTC | May 7, 18:00 UTC | 3h 40m |
| 2026-05-06 | CTM021 | - | May 6, 14:50 UTC | May 6, 15:50 UTC | 1h 0m |
| 2026-05-04 | CTM1028 | - | May 4, 11:35 UTC | May 4, 12:25 UTC | 50m |
| 2026-05-04 | CTM1028 | - | May 4, 07:40 UTC | May 4, 09:55 UTC | 2h 15m |
| 2026-05-02 | CTM1028 | - | May 2, 07:50 UTC | May 2, 11:35 UTC | 3h 45m |
| 2026-05-01 | CTM1079 | - | May 1, 08:55 UTC | May 1, 10:30 UTC | 1h 35m |
| 2026-04-30 | CTM1079 | - | Apr 30, 14:40 UTC | Apr 30, 16:45 UTC | 2h 5m |
| 2026-04-30 | CTM1079 | - | Apr 30, 09:50 UTC | Apr 30, 12:30 UTC | 2h 40m |
| 2026-04-30 | CTM1079 | - | Apr 30, 07:30 UTC | Apr 30, 08:00 UTC | 30m |
| 2026-04-29 | CTM1079 | - | Apr 29, 12:30 UTC | Apr 29, 13:35 UTC | 1h 5m |
| 2026-04-29 | CTM1026 | - | Apr 29, 02:55 UTC | Apr 29, 06:15 UTC | 3h 20m |
| 2026-04-27 | CTM1026 | - | Apr 27, 07:30 UTC | Apr 27, 09:40 UTC | 2h 10m |
| 2026-04-24 | CTM1016 | - | Apr 24, 05:45 UTC | Apr 24, 16:00 UTC | 10h 15m |
| 2026-04-23 | CTM1016 | HNL → YVR | Apr 23, 22:25 UTC | Apr 24, 03:55 UTC | 5h 30m |
| 2026-04-23 | CTM1016 | - | Apr 23, 19:05 UTC | Apr 23, 19:30 UTC | 25m |
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-UJCU page for operator, model, and routing details .