Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CC538

ICAO 24-bit transponder address

Currently assigned to TF-GNA · AEROSPATIALE AS-332 Super Puma

Hex
4CC538
Octal
23142470
Decimal
5,031,224
Tail
TF-GNA
Type
AS32
No current signal · last broadcast 1d ago
Flights observed
2
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4CC538.

Callsign history 1 distinct

Callsign Airline Flights Last seen
ICG35 - 2 2026-04-13

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-13 ICG35 - Apr 13, 23:15 UTCApr 13, 23:40 UTC25m
2026-04-13 ICG35 - Apr 13, 22:15 UTCApr 13, 22:40 UTC25m

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 TF-GNA page for operator, model, and routing details .

Mode-S 4CC538 frequently asked

What is Mode-S code 4CC538?
4CC538 is an ICAO 24-bit transponder address. Assigned to TF-GNA.
Is 4CC538 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 4CC538, octal 23142470, decimal 5,031,224.
What flights does 4CC538 operate?
Mode-S 4CC538 has broadcast 1 distinct callsign, including ICG35.