sensors Mode-S transponder
0102AC
ICAO 24-bit transponder address · allocated to Egypt
- Hex
- 0102AC
- Octal
- 00201254
- Decimal
- 66,220
- Country
- EG
- Flights observed
- 5
- Distinct callsigns
- 3
- Country
- EG
- Last broadcast
- 2h ago
Current position
Country allocation
The ICAO 24-bit address 0102AC 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 3 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| NMA639 | Nesma Airlines | 3 | 2026-07-25 |
| NMA619 | Nesma Airlines | 1 | 2026-07-23 |
| NMA614 | Nesma Airlines | 1 | 2026-07-24 |
Recent flights last 5
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | NMA639 | VKO → SSH | Jul 25, 05:05 UTC | Jul 26, 02:35 UTC | 21h 30m |
| 2026-07-25 | NMA639 | VKO → SSH | Jul 25, 01:05 UTC | Jul 26, 01:00 UTC | 23h 55m |
| 2026-07-24 | NMA639 | VKO → SSH | Jul 24, 23:05 UTC | Jul 25, 17:25 UTC | 18h 20m |
| 2026-07-24 | NMA614 | HRG → VKO | Jul 24, 21:15 UTC | Jul 25, 17:25 UTC | 20h 10m |
| 2026-07-23 | NMA619 | VKO → SSH | Jul 23, 17:40 UTC | Jul 24, 09:50 UTC | 16h 10m |
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.