sensors Mode-S transponder

00866D

ICAO 24-bit transponder address · allocated to South Africa

Currently assigned to ZU-JCG · AIRPLANE FACTORY Sling 2

Hex
00866D
Octal
00103155
Decimal
34,413
Country
ZA
Tail
ZU-JCG
Type
SLG2
No current signal · last broadcast 1d ago
Flights observed
6
Distinct callsigns
1
Country
ZA
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 00866D.

Country allocation

The ICAO 24-bit address 00866D falls within the block assigned to South Africa (ZA) by ICAO Annex 10, Volume III. Every aircraft registered in South Africa 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 1 distinct

Callsign Airline Flights Last seen
ZUJCG - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 ZUJCG - Apr 13, 13:40 UTCApr 13, 15:20 UTC1h 40m
2026-04-13 ZUJCG - Apr 13, 11:55 UTCApr 13, 12:20 UTC25m
2026-04-13 ZUJCG - Apr 13, 10:30 UTCApr 13, 12:15 UTC1h 45m
2026-04-13 ZUJCG - Apr 13, 08:25 UTCApr 13, 09:10 UTC45m
2026-04-13 ZUJCG - Apr 13, 07:55 UTCApr 13, 09:10 UTC1h 15m
2026-04-13 ZUJCG - Apr 13, 07:30 UTCApr 13, 08:00 UTC30m

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 ZU-JCG page for operator, model, and routing details .

Mode-S 00866D frequently asked

What is Mode-S code 00866D?
00866D is an ICAO 24-bit transponder address. Allocated to South Africa. Assigned to ZU-JCG.
Where is Mode-S 00866D registered?
Mode-S code 00866D is allocated to South Africa (ZA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 00866D broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 00866D, octal 00103155, decimal 34,413.
What flights does 00866D operate?
Mode-S 00866D has broadcast 1 distinct callsign, including ZUJCG.