Apparatus

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sensors Mode-S transponder

ADFFD2

ICAO 24-bit transponder address

Currently assigned to 65-10447 · Northrop T-38C Talon

Hex
ADFFD2
Octal
53377722
Decimal
11,403,218
Tail
65-10447
Type
T38
No current signal · last broadcast 3d ago
Flights observed
4
Distinct callsigns
4
Country
-
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S ADFFD2.

Callsign history 4 distinct

Callsign Airline Flights Last seen
SWEEP72 - 1 2026-04-13
OCTNE11 - 1 2026-04-14
BULLY68 - 1 2026-04-15
BULLY33 - 1 2026-04-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-15 BULLY68 - Apr 15, 13:20 UTCApr 15, 13:40 UTC20m
2026-04-14 OCTNE11 - Apr 14, 13:10 UTCApr 14, 13:35 UTC25m
2026-04-13 SWEEP72 - Apr 13, 17:20 UTCApr 13, 17:55 UTC35m
2026-04-13 BULLY33 - Apr 13, 13:40 UTCApr 13, 13:55 UTC15m

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 65-10447 page for operator, model, and routing details .

Mode-S ADFFD2 frequently asked

What is Mode-S code ADFFD2?
ADFFD2 is an ICAO 24-bit transponder address. Assigned to 65-10447.
Is ADFFD2 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADFFD2, octal 53377722, decimal 11,403,218.
What flights does ADFFD2 operate?
Mode-S ADFFD2 has broadcast 4 distinct callsigns, including SWEEP72, OCTNE11, BULLY68, BULLY33.