Apparatus

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sensors Mode-S transponder

710121

ICAO 24-bit transponder address · allocated to Saudi Arabia

Currently assigned to HZ-AK43 · BOEING 777-300ER

Hex
710121
Octal
34200441
Decimal
7,405,857
Country
SA
Tail
HZ-AK43
Type
B77W
No current signal · last broadcast Jul 26, 19:45 UTC
Flights observed
169
Distinct callsigns
20
Country
SA
Last broadcast
Jul 26, 19:45 UTC

Last known position

Most recent position reported by Mode-S 710121.

Country allocation

The ICAO 24-bit address 710121 falls within the block assigned to Saudi Arabia (SA) by ICAO Annex 10, Volume III. Every aircraft registered in Saudi Arabia 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
SVA021 Saudi Arabian Airlines 20 2026-07-20
SVA020 - 20 2026-07-21
SVA143 Saudi Arabian Airlines 19 2026-05-19
SVA023 - 15 2026-06-18
SVA121 Saudi Arabian Airlines 11 2026-07-25
SVA035 - 10 2026-06-14
SVA022 - 10 2026-06-18
SVA111 Saudi Arabian Airlines 9 2026-07-24
SVA037 Saudi Arabian Airlines 8 2026-05-08
SVA144 Saudi Arabian Airlines 6 2026-05-19
SVA038 Saudi Arabian Airlines 6 2026-05-09
SVA110 - 5 2026-07-24
SVA041 Saudi Arabian Airlines 4 2026-06-08
SVA036 Saudi Arabian Airlines 4 2026-06-14
SVA379 - 3 2026-07-12
SVA122 - 3 2026-07-26
SVA042 Saudi Arabian Airlines 3 2026-06-09
SVA595 - 1 2026-07-05
SVA378 - 1 2026-07-12
SVA377 - 1 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SVA122 - Jul 26, 15:30 UTCJul 26, 19:45 UTC4h 15m
2026-07-25 SVA121 RUH → LHR Jul 25, 18:20 UTCJul 26, 13:00 UTC18h 41m
2026-07-25 SVA121 RUH → LHR Jul 25, 15:25 UTCJul 26, 13:00 UTC21h 36m
2026-07-25 SVA121 RUH → LHR Jul 25, 07:40 UTCJul 25, 12:25 UTC4h 45m
2026-07-24 SVA121 RUH → LHR Jul 24, 12:20 UTCJul 25, 12:15 UTC23h 55m
2026-07-24 SVA110 LHR → RUH Jul 24, 10:20 UTCJul 25, 10:15 UTC23h 55m
2026-07-24 SVA110 - Jul 24, 09:45 UTCJul 25, 08:15 UTC22h 30m
2026-07-24 SVA111 RUH → LHR Jul 24, 01:20 UTCJul 24, 06:10 UTC4h 50m
2026-07-23 SVA110 - Jul 23, 15:15 UTCJul 23, 15:25 UTC10m
2026-07-23 SVA110 - Jul 23, 09:40 UTCJul 23, 14:05 UTC4h 25m
2026-07-23 SVA111 RUH → LHR Jul 23, 01:15 UTCJul 23, 06:05 UTC4h 50m
2026-07-21 SVA020 - Jul 21, 00:40 UTCJul 21, 10:00 UTC9h 20m
2026-07-20 SVA021 JED → JFK Jul 20, 08:30 UTCJul 20, 18:20 UTC9h 50m
2026-07-19 SVA021 JED → JFK Jul 19, 10:20 UTCJul 20, 10:15 UTC23h 55m
2026-07-19 SVA020 - Jul 19, 03:25 UTCJul 19, 12:15 UTC8h 50m
2026-07-18 SVA021 - Jul 18, 07:20 UTCJul 18, 19:45 UTC12h 25m
2026-07-17 SVA021 - Jul 17, 19:05 UTCJul 18, 18:15 UTC23h 11m
2026-07-16 SVA020 - Jul 16, 23:25 UTCJul 17, 17:40 UTC18h 15m
2026-07-16 SVA021 - Jul 16, 08:25 UTCJul 16, 18:34 UTC10h 10m
2026-07-13 SVA372 CMN → JED Jul 13, 14:00 UTCJul 13, 18:20 UTC4h 20m
2026-07-13 SVA373 - Jul 13, 08:01 UTCJul 13, 11:25 UTC3h 25m
2026-07-12 SVA378 - Jul 12, 18:45 UTCJul 13, 07:55 UTC13h 10m
2026-07-12 SVA379 - Jul 12, 11:35 UTCJul 12, 16:01 UTC4h 25m
2026-07-11 SVA379 - Jul 11, 18:50 UTCJul 12, 16:01 UTC21h 10m
2026-07-11 SVA379 - Jul 11, 16:20 UTCJul 12, 16:01 UTC23h 40m
2026-07-11 SVA228 BCN → JED Jul 11, 16:00 UTCJul 12, 14:05 UTC22h 5m
2026-07-11 SVA229 - Jul 11, 09:45 UTCJul 11, 13:05 UTC3h 20m
2026-07-05 SVA595 - Jul 5, 19:15 UTCJul 5, 20:05 UTC50m
2026-07-05 SVA020 - Jul 5, 04:50 UTCJul 5, 17:30 UTC12h 40m
2026-07-05 SVA020 - Jul 5, 00:10 UTCJul 5, 01:25 UTC1h 15m
2026-07-04 SVA021 - Jul 4, 07:25 UTCJul 4, 18:30 UTC11h 5m
2026-07-03 SVA021 - Jul 3, 08:20 UTCJul 4, 07:50 UTC23h 30m
2026-07-02 SVA020 - Jul 2, 23:40 UTCJul 3, 08:55 UTC9h 15m
2026-07-02 SVA021 - Jul 2, 07:20 UTCJul 2, 18:50 UTC11h 30m
2026-07-01 SVA021 - Jul 1, 08:20 UTCJul 2, 07:50 UTC23h 30m
2026-06-30 SVA020 - Jun 30, 23:35 UTCJul 1, 08:20 UTC8h 45m
2026-06-30 SVA021 - Jun 30, 07:20 UTCJun 30, 18:05 UTC10h 45m
2026-06-26 SVA376 - Jun 26, 07:14 UTCJun 26, 11:09 UTC3h 55m
2026-06-26 SVA377 - Jun 26, 01:24 UTCJun 26, 04:50 UTC3h 25m
2026-06-22 SVA110 - Jun 22, 09:49 UTCJun 22, 14:14 UTC4h 25m
2026-06-21 SVA111 - Jun 21, 10:19 UTCJun 22, 06:05 UTC19h 45m
2026-06-21 SVA111 - Jun 21, 09:24 UTCJun 22, 06:05 UTC20h 40m
2026-06-20 SVA111 - Jun 20, 16:05 UTCJun 21, 06:10 UTC14h 5m
2026-06-19 SVA121 - Jun 19, 18:20 UTCJun 20, 13:19 UTC19h 0m
2026-06-19 SVA121 - Jun 19, 15:49 UTCJun 20, 13:19 UTC21h 30m
2026-06-18 SVA121 - Jun 18, 21:35 UTCJun 19, 12:25 UTC14h 49m
2026-06-18 SVA022 JFK → LHR Jun 18, 16:40 UTCJun 19, 12:25 UTC19h 44m
2026-06-18 SVA023 - Jun 18, 02:10 UTCJun 18, 13:35 UTC11h 25m
2026-06-14 SVA036 IAD → JED Jun 14, 23:10 UTCJun 15, 08:00 UTC8h 50m
2026-06-14 SVA035 - Jun 14, 07:55 UTCJun 14, 19:20 UTC11h 25m

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 HZ-AK43 page for operator, model, and routing details .

Mode-S 710121 frequently asked

What is Mode-S code 710121?
710121 is an ICAO 24-bit transponder address. Allocated to Saudi Arabia. Assigned to HZ-AK43.
Where is Mode-S 710121 registered?
Mode-S code 710121 is allocated to Saudi Arabia (SA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 710121 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 710121, octal 34200441, decimal 7,405,857.
What flights does 710121 operate?
Mode-S 710121 has broadcast 20 distinct callsigns, including SVA021, SVA020, SVA143, SVA023, SVA121.