Apparatus

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sensors Mode-S transponder

7100BF

ICAO 24-bit transponder address · allocated to Saudi Arabia

Currently assigned to HZ-AK31 · BOEING 777-300ER

Hex
7100BF
Octal
34200277
Decimal
7,405,759
Country
SA
Tail
HZ-AK31
Type
B77W
No current signal · last broadcast Jul 26, 19:25 UTC
Flights observed
201
Distinct callsigns
20
Country
SA
Last broadcast
Jul 26, 19:25 UTC

Last known position

Most recent position reported by Mode-S 7100BF.

Country allocation

The ICAO 24-bit address 7100BF 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
SVA804 Saudi Arabian Airlines 14 2026-07-20
SVA805 - 13 2026-07-20
SVA734 - 7 2026-07-03
SVA818 Saudi Arabian Airlines 5 2026-05-30
SVA809 Saudi Arabian Airlines 5 2026-05-30
SVA808 Saudi Arabian Airlines 4 2026-05-28
SVA735 - 4 2026-07-04
SVA724 Saudi Arabian Airlines 4 2026-07-26
SVA5218 - 4 2026-06-30
SVA341 - 4 2026-04-18
SVA9730 - 3 2026-04-28
SVA9342 - 3 2026-06-29
SVA9313 - 3 2026-05-19
SVA756 Saudi Arabian Airlines 3 2026-07-17
SVA738 Saudi Arabian Airlines 3 2026-07-01
SVA736 - 3 2026-07-07
SVA726 Saudi Arabian Airlines 3 2026-07-17
SVA5800 - 3 2026-06-16
SVA5398 - 3 2026-06-26
SVA5260 - 3 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SVA3339 - Jul 26, 01:20 UTCJul 26, 19:25 UTC18h 6m
2026-07-26 SVA724 RUH → ISB Jul 26, 00:25 UTCJul 26, 01:15 UTC50m
2026-07-24 SVA700 JED → KHI Jul 24, 13:50 UTCJul 25, 01:20 UTC11h 30m
2026-07-24 SVA800 JED → DAC Jul 24, 09:50 UTCJul 24, 10:00 UTC10m
2026-07-24 SVA800 JED → DAC Jul 24, 07:10 UTCJul 24, 08:05 UTC55m
2026-07-23 SVA861 - Jul 23, 08:10 UTCJul 23, 15:50 UTC7h 40m
2026-07-22 SVA862 RUH → MNL Jul 22, 20:35 UTCJul 23, 06:00 UTC9h 25m
2026-07-22 SVA861 - Jul 22, 11:25 UTCJul 22, 15:50 UTC4h 25m
2026-07-21 SVA862 RUH → MNL Jul 21, 20:50 UTCJul 22, 05:25 UTC8h 35m
2026-07-21 SVA761 DEL → RUH Jul 21, 13:20 UTCJul 21, 16:35 UTC3h 15m
2026-07-21 SVA760 - Jul 21, 08:00 UTCJul 21, 11:25 UTC3h 25m
2026-07-20 SVA805 - Jul 20, 19:00 UTCJul 21, 00:10 UTC5h 9m
2026-07-20 SVA804 JED → DAC Jul 20, 11:45 UTCJul 20, 17:05 UTC5h 20m
2026-07-19 SVA724 - Jul 19, 23:25 UTCJul 20, 08:00 UTC8h 35m
2026-07-19 SVA737 - Jul 19, 16:30 UTCJul 19, 19:20 UTC2h 50m
2026-07-18 SVA805 - Jul 18, 19:50 UTCJul 19, 14:25 UTC18h 35m
2026-07-18 SVA805 - Jul 18, 19:20 UTCJul 19, 14:25 UTC19h 5m
2026-07-17 SVA804 JED → DAC Jul 17, 23:05 UTCJul 18, 17:25 UTC18h 21m
2026-07-17 SVA726 JED → ISB Jul 17, 17:30 UTCJul 17, 17:40 UTC10m
2026-07-17 SVA757 DEL → JED Jul 17, 06:35 UTCJul 17, 17:25 UTC10h 50m
2026-07-17 SVA756 JED → DEL Jul 17, 00:45 UTCJul 17, 04:20 UTC3h 35m
2026-07-15 SVA805 - Jul 15, 19:15 UTCJul 15, 23:45 UTC4h 30m
2026-07-14 SVA804 JED → DAC Jul 14, 23:50 UTCJul 15, 17:10 UTC17h 20m
2026-07-14 SVA804 JED → DAC Jul 14, 16:20 UTCJul 15, 15:00 UTC22h 39m
2026-07-14 SVA761 DEL → RUH Jul 14, 14:05 UTCJul 15, 08:00 UTC17h 54m
2026-07-13 SVA760 - Jul 13, 19:30 UTCJul 14, 12:10 UTC16h 40m
2026-07-12 SVA804 JED → DAC Jul 12, 23:30 UTCJul 13, 17:40 UTC18h 10m
2026-07-11 SVA805 - Jul 11, 19:50 UTCJul 12, 15:01 UTC19h 10m
2026-07-11 SVA804 JED → DAC Jul 11, 12:30 UTCJul 11, 17:30 UTC5h 0m
2026-07-10 SVA817 - Jul 10, 09:40 UTCJul 10, 10:10 UTC30m
2026-07-09 SVA816 - Jul 9, 20:00 UTCJul 10, 04:05 UTC8h 5m
2026-07-08 SVA816 - Jul 8, 23:50 UTCJul 9, 23:30 UTC23h 40m
2026-07-08 SVA805 - Jul 8, 22:05 UTCJul 9, 20:15 UTC22h 10m
2026-07-08 SVA805 - Jul 8, 20:10 UTCJul 9, 00:45 UTC4h 35m
2026-07-07 SVA804 JED → DAC Jul 7, 23:50 UTCJul 8, 18:10 UTC18h 20m
2026-07-07 SVA804 JED → DAC Jul 7, 23:35 UTCJul 8, 18:10 UTC18h 35m
2026-07-07 SVA804 JED → DAC Jul 7, 18:50 UTCJul 8, 17:45 UTC22h 55m
2026-07-07 SVA804 JED → DAC Jul 7, 16:45 UTCJul 8, 15:45 UTC23h 0m
2026-07-07 SVA724 - Jul 7, 13:50 UTCJul 8, 13:45 UTC23h 55m
2026-07-07 SVA724 - Jul 7, 11:50 UTCJul 8, 08:10 UTC20h 20m
2026-07-07 SVA736 - Jul 7, 11:05 UTCJul 8, 08:10 UTC21h 5m
2026-07-06 SVA736 - Jul 6, 23:50 UTCJul 7, 23:45 UTC23h 55m
2026-07-06 SVA736 - Jul 6, 21:50 UTCJul 7, 19:30 UTC21h 40m
2026-07-06 SVA805 - Jul 6, 19:50 UTCJul 7, 19:30 UTC23h 40m
2026-07-06 SVA805 - Jul 6, 19:30 UTCJul 7, 17:00 UTC21h 30m
2026-07-06 SVA804 JED → DAC Jul 6, 00:40 UTCJul 6, 17:30 UTC16h 50m
2026-07-04 SVA735 - Jul 4, 07:50 UTCJul 4, 08:00 UTC10m
2026-07-04 SVA735 - Jul 4, 05:35 UTCJul 4, 06:05 UTC30m
2026-07-03 SVA734 - Jul 3, 07:55 UTCJul 4, 03:10 UTC19h 15m
2026-07-03 SVA734 - Jul 3, 06:05 UTCJul 4, 03:10 UTC21h 5m

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-AK31 page for operator, model, and routing details .

Mode-S 7100BF frequently asked

What is Mode-S code 7100BF?
7100BF is an ICAO 24-bit transponder address. Allocated to Saudi Arabia. Assigned to HZ-AK31.
Where is Mode-S 7100BF registered?
Mode-S code 7100BF 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 7100BF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7100BF, octal 34200277, decimal 7,405,759.
What flights does 7100BF operate?
Mode-S 7100BF has broadcast 20 distinct callsigns, including SVA804, SVA805, SVA734, SVA818, SVA809.