sensors Mode-S transponder

717C87

ICAO 24-bit transponder address · allocated to Saudi Arabia

Currently assigned to HZ-ASAD · AIRBUS A-321neo

Hex
717C87
Octal
34276207
Decimal
7,437,447
Country
SA
Tail
HZ-ASAD
Type
A21N
No current signal · last broadcast 20h ago
Flights observed
2
Distinct callsigns
2
Country
SA
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 717C87.

Country allocation

The ICAO 24-bit address 717C87 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 2 distinct

Callsign Airline Flights Last seen
SVA588 Saudi Arabian Airlines 1 2026-04-14
SVA261 - 1 2026-04-12

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-14 SVA588 JED → DXB Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-12 SVA261 - Apr 12, 17:15 UTCApr 12, 20:15 UTC3h 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 HZ-ASAD page for operator, model, and routing details .

Mode-S 717C87 frequently asked

What is Mode-S code 717C87?
717C87 is an ICAO 24-bit transponder address. Allocated to Saudi Arabia. Assigned to HZ-ASAD.
Where is Mode-S 717C87 registered?
Mode-S code 717C87 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 717C87 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 717C87, octal 34276207, decimal 7,437,447.
What flights does 717C87 operate?
Mode-S 717C87 has broadcast 2 distinct callsigns, including SVA588, SVA261.