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sensors Mode-S transponder

4A35B7

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to 339 · AIRBUS HELICOPTERS EC-135/635

Hex
4A35B7
Octal
22432667
Decimal
4,863,415
Country
RO
Tail
339
Type
EC35
No current signal · last broadcast 11d ago
Flights observed
219
Distinct callsigns
1
Country
RO
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 4A35B7.

Country allocation

The ICAO 24-bit address 4A35B7 falls within the block assigned to Romania (RO) by ICAO Annex 10, Volume III. Every aircraft registered in Romania 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 1 distinct

Callsign Airline Flights Last seen
MAI339 - 219 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-06 MAI339 - Jul 6, 10:45 UTCJul 6, 10:50 UTC5m
2026-07-06 MAI339 - Jul 6, 10:35 UTCJul 6, 10:40 UTC5m
2026-06-24 MAI339 - Jun 24, 09:15 UTCJun 24, 09:45 UTC30m
2026-06-24 MAI339 - Jun 24, 06:35 UTCJun 24, 06:45 UTC10m
2026-06-23 MAI339 - Jun 23, 14:49 UTCJun 23, 15:09 UTC20m
2026-06-23 MAI339 - Jun 23, 12:49 UTCJun 23, 13:15 UTC25m
2026-06-22 MAI339 - Jun 22, 19:54 UTCJun 22, 20:44 UTC50m
2026-06-22 MAI339 - Jun 22, 18:09 UTCJun 22, 18:54 UTC45m
2026-06-22 MAI339 - Jun 22, 14:05 UTCJun 22, 15:20 UTC1h 15m
2026-06-22 MAI339 - Jun 22, 12:10 UTCJun 22, 12:34 UTC25m
2026-06-22 MAI339 - Jun 22, 09:04 UTCJun 22, 11:00 UTC1h 55m
2026-06-22 MAI339 - Jun 22, 07:34 UTCJun 22, 07:54 UTC20m
2026-06-20 MAI339 - Jun 20, 14:29 UTCJun 20, 15:54 UTC1h 25m
2026-06-20 MAI339 - Jun 20, 12:19 UTCJun 20, 12:59 UTC40m
2026-06-20 MAI339 - Jun 20, 08:55 UTCJun 20, 11:25 UTC2h 30m
2026-06-20 MAI339 - Jun 20, 07:44 UTCJun 20, 07:59 UTC15m
2026-06-19 MAI339 - Jun 19, 14:04 UTCJun 19, 14:19 UTC15m
2026-06-19 MAI339 - Jun 19, 10:54 UTCJun 19, 12:19 UTC1h 25m
2026-06-19 MAI339 - Jun 19, 08:54 UTCJun 19, 09:14 UTC20m
2026-06-18 MAI339 - Jun 18, 16:15 UTCJun 18, 16:40 UTC25m
2026-06-18 MAI339 - Jun 18, 11:35 UTCJun 18, 13:05 UTC1h 30m
2026-06-18 MAI339 - Jun 18, 10:00 UTCJun 18, 10:25 UTC25m
2026-06-17 MAI339 - Jun 17, 16:30 UTCJun 17, 17:00 UTC30m
2026-06-17 MAI339 - Jun 17, 12:50 UTCJun 17, 13:20 UTC30m
2026-06-17 MAI339 - Jun 17, 07:25 UTCJun 17, 07:45 UTC20m
2026-06-17 MAI339 - Jun 17, 06:35 UTCJun 17, 06:50 UTC15m
2026-06-17 MAI339 - Jun 17, 04:00 UTCJun 17, 05:00 UTC1h 0m
2026-06-17 MAI339 - Jun 17, 03:15 UTCJun 17, 03:30 UTC15m
2026-06-16 MAI339 - Jun 16, 15:50 UTCJun 16, 16:25 UTC35m
2026-06-16 MAI339 - Jun 16, 12:25 UTCJun 16, 12:35 UTC10m
2026-06-16 MAI339 - Jun 16, 09:00 UTCJun 16, 09:34 UTC35m
2026-06-16 MAI339 - Jun 16, 05:55 UTCJun 16, 08:25 UTC2h 30m
2026-06-16 MAI339 - Jun 16, 05:00 UTCJun 16, 05:20 UTC20m
2026-06-15 MAI339 - Jun 15, 14:00 UTCJun 15, 14:34 UTC35m
2026-06-13 MAI339 - Jun 13, 13:55 UTCJun 13, 15:10 UTC1h 15m
2026-06-13 MAI339 - Jun 13, 12:25 UTCJun 13, 13:15 UTC50m
2026-06-13 MAI339 - Jun 13, 11:30 UTCJun 13, 11:55 UTC25m
2026-06-13 MAI339 - Jun 13, 08:15 UTCJun 13, 08:25 UTC10m
2026-06-11 MAI339 - Jun 11, 16:00 UTCJun 11, 17:00 UTC1h 0m
2026-06-11 MAI339 - Jun 11, 14:40 UTCJun 11, 15:05 UTC25m
2026-06-11 MAI339 - Jun 11, 12:05 UTCJun 11, 12:35 UTC30m
2026-06-10 MAI339 - Jun 10, 15:20 UTCJun 10, 15:50 UTC30m
2026-06-10 MAI339 - Jun 10, 13:00 UTCJun 10, 13:10 UTC10m
2026-06-10 MAI339 - Jun 10, 08:25 UTCJun 10, 12:20 UTC3h 55m
2026-06-09 MAI339 - Jun 9, 06:55 UTCJun 9, 07:15 UTC20m
2026-06-09 MAI339 - Jun 9, 06:15 UTCJun 9, 06:25 UTC10m
2026-06-08 MAI339 - Jun 8, 19:50 UTCJun 8, 20:00 UTC10m
2026-06-08 MAI339 - Jun 8, 17:05 UTCJun 8, 17:15 UTC10m
2026-06-08 MAI339 - Jun 8, 14:50 UTCJun 8, 16:05 UTC1h 15m
2026-06-08 MAI339 - Jun 8, 08:00 UTCJun 8, 08:40 UTC40m

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 339 page for operator, model, and routing details .

Mode-S 4A35B7 frequently asked

What is Mode-S code 4A35B7?
4A35B7 is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to 339.
Where is Mode-S 4A35B7 registered?
Mode-S code 4A35B7 is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A35B7 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A35B7, octal 22432667, decimal 4,863,415.
What flights does 4A35B7 operate?
Mode-S 4A35B7 has broadcast 1 distinct callsign, including MAI339.