Apparatus

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sensors Mode-S transponder

4CAEFA

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-MVA · AIRBUS A220-100

Hex
4CAEFA
Octal
23127372
Decimal
5,025,530
Country
IE
Tail
EI-MVA
Type
BCS1
No current signal · last broadcast Apr 20, 21:00 UTC
Flights observed
58
Distinct callsigns
20
Country
IE
Last broadcast
Apr 20, 21:00 UTC

Last known position

Most recent position reported by Mode-S 4CAEFA.

Country allocation

The ICAO 24-bit address 4CAEFA falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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 20 distinct

Callsign Airline Flights Last seen
ITY224 ITA Airways 5 2026-04-19
ITY217 ITA Airways 5 2026-04-20
ITY247 - 4 2026-04-19
ITY451 ITA Airways 3 2026-04-16
ITY238 - 3 2026-04-19
ITY219 - 3 2026-04-15
ITY2045 ITA Airways 3 2026-04-20
ITY450 ITA Airways 2 2026-04-16
ITY350 ITA Airways 2 2026-04-14
ITY226 ITA Airways 2 2026-04-15
ITY220 - 2 2026-04-15
ITY1753 - 2 2026-04-17
ITY1752 - 2 2026-04-17
ITY1297 - 2 2026-04-13
ITY1271 - 2 2026-04-13
ITY351 - 1 2026-04-14
ITY227 - 1 2026-04-15
ITY2058 - 1 2026-04-18
ITY1BC - 1 2026-04-20
ITY1623 - 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-04-20 ITY1267 FCO → NAP Apr 20, 20:45 UTCApr 20, 21:00 UTC15m
2026-04-20 ITY1BC - Apr 20, 18:00 UTCApr 20, 18:50 UTC50m
2026-04-20 ITY1623 - Apr 20, 16:10 UTCApr 20, 16:40 UTC30m
2026-04-20 ITY1616 - Apr 20, 13:50 UTCApr 20, 14:30 UTC40m
2026-04-20 ITY1613 FCO → BRI Apr 20, 12:05 UTCApr 20, 12:30 UTC25m
2026-04-20 ITY2045 LIN → FCO Apr 20, 09:55 UTCApr 20, 10:35 UTC40m
2026-04-20 ITY217 LCY → LIN Apr 20, 05:50 UTCApr 20, 07:10 UTC1h 20m
2026-04-19 ITY224 LIN → LCY Apr 19, 18:10 UTCApr 19, 19:45 UTC1h 35m
2026-04-19 ITY247 - Apr 19, 15:50 UTCApr 19, 17:15 UTC1h 25m
2026-04-19 ITY238 LIN → LCY Apr 19, 13:25 UTCApr 19, 14:55 UTC1h 30m
2026-04-18 ITY2058 - Apr 18, 19:15 UTCApr 18, 20:05 UTC50m
2026-04-18 ITY1270 - Apr 18, 14:00 UTCApr 18, 14:25 UTC25m
2026-04-18 ITY1269 - Apr 18, 12:30 UTCApr 18, 12:50 UTC20m
2026-04-17 ITY1752 - Apr 17, 19:25 UTCApr 17, 19:35 UTC10m
2026-04-17 ITY1752 - Apr 17, 18:40 UTCApr 17, 19:20 UTC40m
2026-04-17 ITY1753 - Apr 17, 17:25 UTCApr 17, 17:35 UTC10m
2026-04-17 ITY1753 - Apr 17, 16:45 UTCApr 17, 17:15 UTC30m
2026-04-17 ITY1386 - Apr 17, 14:00 UTCApr 17, 14:35 UTC35m
2026-04-17 ITY1395 - Apr 17, 12:05 UTCApr 17, 13:00 UTC55m
2026-04-17 ITY2045 LIN → FCO Apr 17, 10:05 UTCApr 17, 10:50 UTC45m
2026-04-17 ITY217 LCY → LIN Apr 17, 07:20 UTCApr 17, 07:45 UTC25m
2026-04-17 ITY217 LCY → LIN Apr 17, 06:10 UTCApr 17, 07:15 UTC1h 5m
2026-04-16 ITY224 - Apr 16, 19:15 UTCApr 16, 19:50 UTC35m
2026-04-16 ITY224 - Apr 16, 18:20 UTCApr 16, 19:10 UTC50m
2026-04-16 ITY247 - Apr 16, 15:55 UTCApr 16, 17:10 UTC1h 15m
2026-04-16 ITY238 LIN → LCY Apr 16, 13:20 UTCApr 16, 14:55 UTC1h 35m
2026-04-16 ITY451 MUC → LIN Apr 16, 07:45 UTCApr 16, 08:40 UTC55m
2026-04-16 ITY450 LIN → MUC Apr 16, 05:34 UTCApr 16, 06:15 UTC40m
2026-04-15 ITY219 - Apr 15, 19:05 UTCApr 15, 20:20 UTC1h 15m
2026-04-15 ITY219 - Apr 15, 18:55 UTCApr 15, 19:00 UTC5m
2026-04-15 ITY220 - Apr 15, 17:05 UTCApr 15, 17:55 UTC50m
2026-04-15 ITY227 - Apr 15, 13:01 UTCApr 15, 14:45 UTC1h 44m
2026-04-15 ITY226 LIN → LCY Apr 15, 11:00 UTCApr 15, 12:01 UTC1h 0m
2026-04-15 ITY226 LIN → LCY Apr 15, 10:35 UTCApr 15, 10:55 UTC20m
2026-04-15 ITY217 LCY → LIN Apr 15, 07:01 UTCApr 15, 07:25 UTC25m
2026-04-15 ITY217 LCY → LIN Apr 15, 05:55 UTCApr 15, 06:55 UTC1h 0m
2026-04-14 ITY224 - Apr 14, 18:55 UTCApr 14, 19:55 UTC1h 0m
2026-04-14 ITY224 - Apr 14, 18:25 UTCApr 14, 18:45 UTC20m
2026-04-14 ITY247 - Apr 14, 16:50 UTCApr 14, 17:00 UTC10m
2026-04-14 ITY247 - Apr 14, 15:35 UTCApr 14, 16:45 UTC1h 10m
2026-04-14 ITY238 LIN → LCY Apr 14, 13:05 UTCApr 14, 14:40 UTC1h 35m
2026-04-14 ITY351 - Apr 14, 09:10 UTCApr 14, 10:15 UTC1h 5m
2026-04-14 ITY350 LIN → ORY Apr 14, 07:10 UTCApr 14, 07:50 UTC40m
2026-04-14 ITY350 LIN → ORY Apr 14, 06:45 UTCApr 14, 07:10 UTC25m
2026-04-14 ITY1278 - Apr 14, 05:15 UTCApr 14, 05:40 UTC25m
2026-04-13 ITY1297 - Apr 13, 19:50 UTCApr 13, 20:25 UTC35m
2026-04-13 ITY1297 - Apr 13, 19:35 UTCApr 13, 20:10 UTC35m
2026-04-13 ITY1282 - Apr 13, 17:40 UTCApr 13, 18:30 UTC50m
2026-04-13 ITY1271 - Apr 13, 16:15 UTCApr 13, 16:30 UTC15m
2026-04-13 ITY1271 - Apr 13, 16:05 UTCApr 13, 16:15 UTC10m

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 EI-MVA page for operator, model, and routing details .

Mode-S 4CAEFA frequently asked

What is Mode-S code 4CAEFA?
4CAEFA is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-MVA.
Where is Mode-S 4CAEFA registered?
Mode-S code 4CAEFA is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEFA broadcasting right now?
No active broadcast right now. Last signal was Apr 20, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEFA, octal 23127372, decimal 5,025,530.
What flights does 4CAEFA operate?
Mode-S 4CAEFA has broadcast 20 distinct callsigns, including ITY224, ITY217, ITY247, ITY451, ITY238.