sensors Mode-S transponder

0201A4

ICAO 24-bit transponder address · allocated to Morocco

Currently assigned to CN-RHB · BOEING 787-9 Dreamliner

Hex
0201A4
Octal
00400644
Decimal
131,492
Country
MA
Tail
CN-RHB
Type
B789
No current signal · last broadcast 20h ago
Flights observed
4
Distinct callsigns
3
Country
MA
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 0201A4.

Country allocation

The ICAO 24-bit address 0201A4 falls within the block assigned to Morocco (MA) by ICAO Annex 10, Volume III. Every aircraft registered in Morocco 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 3 distinct

Callsign Airline Flights Last seen
RAM208M Royal Air Maroc 2 2026-04-13
RAM214 Royal Air Maroc 1 2026-04-14
RAM209M - 1 2026-04-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-14 RAM214 GRU → CMN Apr 14, 09:55 UTCApr 14, 10:25 UTC30m
2026-04-13 RAM209M - Apr 13, 04:25 UTCApr 13, 05:25 UTC1h 0m
2026-04-13 RAM208M CMN → YUL Apr 13, 00:55 UTCApr 13, 02:45 UTC1h 50m
2026-04-12 RAM208M CMN → YUL Apr 12, 19:55 UTCApr 12, 20:15 UTC20m

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 CN-RHB page for operator, model, and routing details .

Mode-S 0201A4 frequently asked

What is Mode-S code 0201A4?
0201A4 is an ICAO 24-bit transponder address. Allocated to Morocco. Assigned to CN-RHB.
Where is Mode-S 0201A4 registered?
Mode-S code 0201A4 is allocated to Morocco (MA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 0201A4 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 0201A4, octal 00400644, decimal 131,492.
What flights does 0201A4 operate?
Mode-S 0201A4 has broadcast 3 distinct callsigns, including RAM208M, RAM214, RAM209M.