Apparatus

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sensors Mode-S transponder

4A068A

ICAO 24-bit transponder address · allocated to Romania

Currently assigned to YR-ATJ · ATR-72-600

Hex
4A068A
Octal
22403212
Decimal
4,851,338
Country
RO
Tail
YR-ATJ
Type
AT76
No current signal · last broadcast Jul 26, 20:55 UTC
Flights observed
852
Distinct callsigns
20
Country
RO
Last broadcast
Jul 26, 20:55 UTC

Last known position

Most recent position reported by Mode-S 4A068A.

Country allocation

The ICAO 24-bit address 4A068A 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 20 distinct

Callsign Airline Flights Last seen
ROT809H Tarom 47 2026-07-25
ROT810W Tarom 40 2026-07-26
ROT261N Tarom 28 2026-07-25
ROT262R Tarom 27 2026-07-25
ROT238X - 27 2026-07-24
ROT237A Tarom 27 2026-07-24
ROT707B - 23 2026-07-21
ROT618W Tarom 22 2026-07-26
ROT617X Tarom 22 2026-07-26
ROT708F Tarom 20 2026-07-21
ROT604P Tarom 20 2026-07-23
ROT603W Tarom 20 2026-07-23
ROT627N Tarom 18 2026-07-22
ROT703E - 17 2026-07-21
ROT628V - 17 2026-07-22
ROT602K Tarom 17 2026-07-26
ROT601A Tarom 17 2026-07-26
ROT644N - 16 2026-07-20
ROT701W Tarom 15 2026-07-23
ROT643C Tarom 15 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ROT649D OTP → CLJ Jul 26, 20:10 UTCJul 26, 20:55 UTC45m
2026-07-26 ROT648P CLJ → OTP Jul 26, 18:35 UTCJul 26, 19:15 UTC40m
2026-07-26 ROT647M OTP → CLJ Jul 26, 16:50 UTCJul 26, 17:35 UTC45m
2026-07-26 ROT608L TSR → OTP Jul 26, 15:15 UTCJul 26, 15:40 UTC25m
2026-07-26 ROT607R OTP → TSR Jul 26, 12:55 UTCJul 26, 13:25 UTC30m
2026-07-26 ROT618W BAY → OTP Jul 26, 10:50 UTCJul 26, 11:40 UTC50m
2026-07-26 ROT617X OTP → BAY Jul 26, 08:50 UTCJul 26, 09:45 UTC55m
2026-07-26 ROT602K TSR → OTP Jul 26, 06:45 UTCJul 26, 07:05 UTC20m
2026-07-26 ROT601A OTP → TSR Jul 26, 04:30 UTCJul 26, 05:00 UTC30m
2026-07-26 ROT810W SCV → OTP Jul 26, 02:45 UTCJul 26, 03:20 UTC35m
2026-07-25 ROT809H OTP → SCV Jul 25, 20:50 UTCJul 25, 21:30 UTC40m
2026-07-25 ROT274K ATH → OTP Jul 25, 17:40 UTCJul 25, 19:40 UTC2h 0m
2026-07-25 ROT273L OTP → ATH Jul 25, 14:55 UTCJul 25, 16:45 UTC1h 50m
2026-07-25 ROT276H - Jul 25, 12:30 UTCJul 25, 13:55 UTC1h 25m
2026-07-25 ROT275B OTP → SKG Jul 25, 10:05 UTCJul 25, 11:30 UTC1h 25m
2026-07-25 ROT262R IST → OTP Jul 25, 07:45 UTCJul 25, 08:50 UTC1h 5m
2026-07-25 ROT261N OTP → IST Jul 25, 04:50 UTCJul 25, 06:05 UTC1h 15m
2026-07-25 ROT810W SCV → OTP Jul 25, 02:25 UTCJul 25, 03:10 UTC45m
2026-07-24 ROT809H OTP → SCV Jul 24, 19:45 UTCJul 24, 20:25 UTC40m
2026-07-24 ROT238X BUD → OTP Jul 24, 16:55 UTCJul 24, 18:30 UTC1h 35m
2026-07-24 ROT237A OTP → BUD Jul 24, 14:55 UTCJul 24, 16:20 UTC1h 25m
2026-07-24 ROT226J PRG → OTP Jul 24, 10:55 UTCJul 24, 13:15 UTC2h 20m
2026-07-24 ROT225P OTP → PRG Jul 24, 07:25 UTCJul 24, 09:55 UTC2h 30m
2026-07-24 ROT642V CLJ → OTP Jul 24, 05:30 UTCJul 24, 06:15 UTC45m
2026-07-24 ROT641X OTP → CLJ Jul 24, 03:50 UTCJul 24, 04:35 UTC45m
2026-07-24 ROT210R RMO → OTP Jul 24, 02:05 UTCJul 24, 02:45 UTC40m
2026-07-23 ROT209L OTP → RMO Jul 23, 20:35 UTCJul 23, 21:15 UTC40m
2026-07-23 ROT298Y SOF → OTP Jul 23, 18:45 UTCJul 23, 19:35 UTC50m
2026-07-23 ROT297H OTP → SOF Jul 23, 17:00 UTCJul 23, 17:50 UTC50m
2026-07-23 ROT276H - Jul 23, 14:45 UTCJul 23, 16:00 UTC1h 15m
2026-07-23 ROT275B - Jul 23, 12:20 UTCJul 23, 13:45 UTC1h 25m
2026-07-23 ROT604P TSR → OTP Jul 23, 10:00 UTCJul 23, 10:45 UTC45m
2026-07-23 ROT603W OTP → TSR Jul 23, 08:15 UTCJul 23, 09:05 UTC50m
2026-07-23 ROT702D IAS → OTP Jul 23, 06:25 UTCJul 23, 07:05 UTC40m
2026-07-23 ROT701W OTP → IAS Jul 23, 04:45 UTCJul 23, 05:25 UTC40m
2026-07-23 ROT810W SCV → OTP Jul 23, 02:25 UTCJul 23, 03:05 UTC40m
2026-07-22 ROT809H OTP → SCV Jul 22, 19:30 UTCJul 22, 20:10 UTC40m
2026-07-22 ROT628V - Jul 22, 16:45 UTCJul 22, 17:50 UTC1h 5m
2026-07-22 ROT627N OTP → OMR Jul 22, 15:00 UTCJul 22, 16:10 UTC1h 10m
2026-07-22 ROT238X - Jul 22, 12:35 UTCJul 22, 14:00 UTC1h 25m
2026-07-22 ROT237A - Jul 22, 11:10 UTCJul 22, 11:55 UTC45m
2026-07-22 ROT261N OTP → IST Jul 22, 04:40 UTCJul 22, 05:25 UTC45m
2026-07-21 ROT809H OTP → SCV Jul 21, 19:45 UTCJul 21, 20:25 UTC40m
2026-07-21 ROT708F IAS → OTP Jul 21, 17:00 UTCJul 21, 17:45 UTC45m
2026-07-21 ROT707B - Jul 21, 15:20 UTCJul 21, 15:55 UTC35m
2026-07-21 ROT703E - Jul 21, 11:30 UTCJul 21, 12:05 UTC35m
2026-07-21 ROT292G SOF → OTP Jul 21, 09:40 UTCJul 21, 10:30 UTC50m
2026-07-21 ROT291H OTP → SOF Jul 21, 07:50 UTCJul 21, 08:45 UTC55m
2026-07-21 ROT602K - Jul 21, 05:50 UTCJul 21, 06:40 UTC50m
2026-07-21 ROT601A OTP → TSR Jul 21, 04:05 UTCJul 21, 05:05 UTC1h 0m

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 YR-ATJ page for operator, model, and routing details .

Mode-S 4A068A frequently asked

What is Mode-S code 4A068A?
4A068A is an ICAO 24-bit transponder address. Allocated to Romania. Assigned to YR-ATJ.
Where is Mode-S 4A068A registered?
Mode-S code 4A068A is allocated to Romania (RO). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4A068A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4A068A, octal 22403212, decimal 4,851,338.
What flights does 4A068A operate?
Mode-S 4A068A has broadcast 20 distinct callsigns, including ROT809H, ROT810W, ROT261N, ROT262R, ROT238X.