Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

3A2E21

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-OLRB · BOEING 787-8 Dreamliner

Hex
3A2E21
Octal
16427041
Decimal
3,812,897
Country
FR
Tail
F-OLRB
Type
B788
Broadcasting now · callsign REU979 · 37,975 ft
Flights observed
103
Distinct callsigns
11
Country
FR
Last broadcast
1h ago

Current position

3A2E21 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 3A2E21 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 11 distinct

Callsign Airline Flights Last seen
REU975 - 21 2026-06-18
REU974 Air Austral 19 2026-06-13
REU976 - 16 2026-07-13
REU979 - 13 2026-07-14
REU973 - 13 2026-07-12
REU978 - 9 2026-07-11
REU971 Air Austral 6 2026-05-14
REU885 Air Austral 3 2026-04-28
REU9901 Air Austral 1 2026-05-16
REU972 Air Austral 1 2026-05-14
REU886 Air Austral 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 REU979 - Jul 14, 14:10 UTCJul 14, 16:15 UTC2h 5m
2026-07-13 REU976 - Jul 13, 19:35 UTCJul 13, 22:55 UTC3h 20m
2026-07-12 REU973 - Jul 12, 23:50 UTCJul 13, 03:40 UTC3h 50m
2026-07-11 REU978 - Jul 11, 21:15 UTCJul 12, 00:45 UTC3h 30m
2026-07-11 REU979 - Jul 11, 15:05 UTCJul 11, 18:40 UTC3h 35m
2026-07-10 REU976 - Jul 10, 18:50 UTCJul 10, 21:35 UTC2h 45m
2026-07-10 REU973 - Jul 10, 00:35 UTCJul 10, 03:50 UTC3h 15m
2026-07-08 REU976 - Jul 8, 18:55 UTCJul 8, 21:35 UTC2h 40m
2026-07-08 REU973 - Jul 8, 00:20 UTCJul 8, 03:30 UTC3h 10m
2026-07-06 REU978 - Jul 6, 20:45 UTCJul 6, 23:30 UTC2h 45m
2026-07-06 REU979 - Jul 6, 14:45 UTCJul 6, 17:55 UTC3h 10m
2026-07-05 REU976 - Jul 5, 18:50 UTCJul 5, 22:10 UTC3h 20m
2026-07-05 REU973 - Jul 5, 00:05 UTCJul 5, 03:30 UTC3h 25m
2026-07-03 REU978 - Jul 3, 20:55 UTCJul 3, 23:40 UTC2h 45m
2026-07-03 REU979 DZA → NBO Jul 3, 14:20 UTCJul 3, 18:25 UTC4h 5m
2026-07-02 REU976 - Jul 2, 18:40 UTCJul 2, 21:35 UTC2h 55m
2026-07-02 REU973 - Jul 2, 00:05 UTCJul 2, 04:00 UTC3h 55m
2026-06-30 REU978 - Jun 30, 21:15 UTCJul 1, 01:10 UTC3h 55m
2026-06-30 REU979 DZA → NBO Jun 30, 14:50 UTCJun 30, 18:40 UTC3h 50m
2026-06-29 REU979 DZA → NBO Jun 29, 22:19 UTCJun 30, 18:40 UTC20h 21m
2026-06-29 REU979 DZA → NBO Jun 29, 20:19 UTCJun 30, 18:40 UTC22h 21m
2026-06-29 REU976 - Jun 29, 19:20 UTCJun 30, 18:15 UTC22h 56m
2026-06-29 REU973 - Jun 29, 01:05 UTCJun 29, 04:39 UTC3h 35m
2026-06-27 REU978 NBO → DZA Jun 27, 22:35 UTCJun 28, 01:29 UTC2h 55m
2026-06-27 REU979 DZA → NBO Jun 27, 13:55 UTCJun 27, 17:59 UTC4h 5m
2026-06-26 REU976 - Jun 26, 19:09 UTCJun 26, 22:34 UTC3h 25m
2026-06-25 REU973 - Jun 25, 23:39 UTCJun 26, 03:39 UTC4h 0m
2026-06-24 REU976 - Jun 24, 19:00 UTCJun 24, 22:35 UTC3h 35m
2026-06-24 REU973 - Jun 24, 00:20 UTCJun 24, 03:29 UTC3h 10m
2026-06-22 REU978 NBO → DZA Jun 22, 21:00 UTCJun 22, 23:50 UTC2h 50m
2026-06-22 REU979 DZA → NBO Jun 22, 14:14 UTCJun 22, 17:55 UTC3h 40m
2026-06-21 REU976 - Jun 21, 18:44 UTCJun 21, 21:29 UTC2h 45m
2026-06-21 REU973 - Jun 21, 00:34 UTCJun 21, 03:44 UTC3h 10m
2026-06-19 REU978 NBO → DZA Jun 19, 20:59 UTCJun 19, 23:49 UTC2h 50m
2026-06-19 REU979 DZA → NBO Jun 19, 14:59 UTCJun 19, 18:34 UTC3h 35m
2026-06-18 REU976 - Jun 18, 19:45 UTCJun 18, 23:10 UTC3h 25m
2026-06-18 REU975 - Jun 18, 00:00 UTCJun 18, 03:20 UTC3h 20m
2026-06-13 REU974 CDG → RUN Jun 13, 17:05 UTCJun 13, 20:25 UTC3h 20m
2026-06-13 REU975 - Jun 13, 01:35 UTCJun 13, 05:00 UTC3h 25m
2026-06-11 REU974 CDG → RUN Jun 11, 17:10 UTCJun 11, 20:35 UTC3h 25m
2026-06-11 REU975 RUN → CDG Jun 11, 00:00 UTCJun 11, 03:30 UTC3h 30m
2026-06-08 REU976 CDG → DZA Jun 8, 18:40 UTCJun 8, 22:05 UTC3h 25m
2026-06-07 REU975 RUN → CDG Jun 7, 23:20 UTCJun 8, 03:35 UTC4h 15m
2026-06-06 REU974 CDG → RUN Jun 6, 17:10 UTCJun 6, 20:49 UTC3h 40m
2026-06-05 REU975 RUN → CDG Jun 5, 23:40 UTCJun 6, 03:30 UTC3h 50m
2026-06-04 REU974 CDG → RUN Jun 4, 17:30 UTCJun 4, 20:20 UTC2h 50m
2026-06-04 REU975 RUN → CDG Jun 4, 00:20 UTCJun 4, 03:40 UTC3h 20m
2026-06-01 REU974 CDG → RUN Jun 1, 17:15 UTCJun 1, 20:35 UTC3h 20m
2026-05-30 REU979 DZA → NBO May 30, 15:40 UTCMay 30, 18:55 UTC3h 15m
2026-05-29 REU976 CDG → DZA May 29, 19:00 UTCMay 29, 21:50 UTC2h 50m

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

Mode-S 3A2E21 frequently asked

What is Mode-S code 3A2E21?
3A2E21 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-OLRB.
Where is Mode-S 3A2E21 registered?
Mode-S code 3A2E21 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3A2E21 broadcasting right now?
Yes. Mode-S 3A2E21 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3A2E21, octal 16427041, decimal 3,812,897.
What flights does 3A2E21 operate?
Mode-S 3A2E21 has broadcast 11 distinct callsigns, including REU975, REU974, REU976, REU979, REU973.