sensors Mode-S transponder

4D207D

ICAO 24-bit transponder address · allocated to Malta

Currently assigned to 9H-QFJ · BOEING 737-800

Hex
4D207D
Octal
23220175
Decimal
5,054,589
Country
MT
Tail
9H-QFJ
Type
B738
No current signal · last broadcast 14h ago
Flights observed
16
Distinct callsigns
9
Country
MT
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4D207D.

Country allocation

The ICAO 24-bit address 4D207D falls within the block assigned to Malta (MT) by ICAO Annex 10, Volume III. Every aircraft registered in Malta 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 9 distinct

Callsign Airline Flights Last seen
RYR29DB Ryanair 3 2026-04-13
RYR287Y - 3 2026-04-13
RYR85KD - 2 2026-04-13
RYR35RC - 2 2026-04-14
RYR10GJ - 2 2026-04-13
RYR6LF - 1 2026-04-13
RYR551 - 1 2026-04-13
RYR3KM - 1 2026-04-12
RYR2AA - 1 2026-04-13

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR35RC - Apr 14, 09:10 UTCApr 14, 10:55 UTC1h 45m
2026-04-14 RYR35RC - Apr 14, 08:50 UTCApr 14, 09:05 UTC15m
2026-04-13 RYR551 - Apr 13, 21:00 UTCApr 13, 22:20 UTC1h 20m
2026-04-13 RYR10GJ - Apr 13, 19:50 UTCApr 13, 20:05 UTC15m
2026-04-13 RYR10GJ - Apr 13, 18:40 UTCApr 13, 20:05 UTC1h 25m
2026-04-13 RYR85KD - Apr 13, 16:15 UTCApr 13, 17:40 UTC1h 25m
2026-04-13 RYR85KD - Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 RYR6LF - Apr 13, 13:40 UTCApr 13, 15:15 UTC1h 35m
2026-04-13 RYR287Y - Apr 13, 12:20 UTCApr 13, 12:45 UTC25m
2026-04-13 RYR287Y - Apr 13, 11:55 UTCApr 13, 12:45 UTC50m
2026-04-13 RYR287Y - Apr 13, 10:50 UTCApr 13, 12:15 UTC1h 25m
2026-04-13 RYR29DB BRU → MAD Apr 13, 08:20 UTCApr 13, 09:20 UTC1h 0m
2026-04-13 RYR29DB BRU → MAD Apr 13, 07:55 UTCApr 13, 09:20 UTC1h 25m
2026-04-13 RYR29DB BRU → MAD Apr 13, 07:15 UTCApr 13, 08:15 UTC1h 0m
2026-04-13 RYR2AA - Apr 13, 04:30 UTCApr 13, 06:20 UTC1h 50m
2026-04-12 RYR3KM - Apr 12, 17:15 UTCApr 12, 19:05 UTC1h 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 9H-QFJ page for operator, model, and routing details .

Mode-S 4D207D frequently asked

What is Mode-S code 4D207D?
4D207D is an ICAO 24-bit transponder address. Allocated to Malta. Assigned to 9H-QFJ.
Where is Mode-S 4D207D registered?
Mode-S code 4D207D is allocated to Malta (MT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4D207D broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4D207D, octal 23220175, decimal 5,054,589.
What flights does 4D207D operate?
Mode-S 4D207D has broadcast 9 distinct callsigns, including RYR29DB, RYR287Y, RYR85KD, RYR35RC, RYR10GJ.