sensors Mode-S transponder

01023B

ICAO 24-bit transponder address · allocated to Egypt

Currently assigned to SU-BUS · AIRBUS A-320neo

Hex
01023B
Octal
00201073
Decimal
66,107
Country
EG
Tail
SU-BUS
Type
A20N
Transponder active on ground
Flights observed
7
Distinct callsigns
5
Country
EG
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 01023B.

Country allocation

The ICAO 24-bit address 01023B falls within the block assigned to Egypt (EG) by ICAO Annex 10, Volume III. Every aircraft registered in Egypt 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 5 distinct

Callsign Airline Flights Last seen
MSC2975 - 2 2026-04-13
MSC2974 - 2 2026-04-13
MSC388 - 1 2026-04-14
MSC2921 - 1 2026-04-12
HSC2975 - 1 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 MSC388 - Apr 14, 05:15 UTCApr 14, 06:00 UTC45m
2026-04-13 MSC2975 - Apr 13, 19:50 UTCApr 13, 21:45 UTC1h 55m
2026-04-13 MSC2975 - Apr 13, 18:05 UTCApr 13, 20:10 UTC2h 5m
2026-04-13 HSC2975 - Apr 13, 16:15 UTCApr 13, 16:45 UTC30m
2026-04-13 MSC2974 - Apr 13, 15:50 UTCApr 13, 16:45 UTC55m
2026-04-13 MSC2974 - Apr 13, 13:05 UTCApr 13, 16:15 UTC3h 10m
2026-04-12 MSC2921 - Apr 12, 17:15 UTCApr 12, 20:10 UTC2h 55m

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 SU-BUS page for operator, model, and routing details .

Mode-S 01023B frequently asked

What is Mode-S code 01023B?
01023B is an ICAO 24-bit transponder address. Allocated to Egypt. Assigned to SU-BUS.
Where is Mode-S 01023B registered?
Mode-S code 01023B is allocated to Egypt (EG). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 01023B broadcasting right now?
Mode-S 01023B is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 01023B, octal 00201073, decimal 66,107.
What flights does 01023B operate?
Mode-S 01023B has broadcast 5 distinct callsigns, including MSC2975, MSC2974, MSC388, MSC2921, HSC2975.