Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADFFCD

ICAO 24-bit transponder address

Currently assigned to 65-10421 · Northrop T-38C Talon

Hex
ADFFCD
Octal
53377715
Decimal
11,403,213
Tail
65-10421
Type
T38
No current signal · last broadcast 3d ago
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S ADFFCD.

Callsign history 2 distinct

Callsign Airline Flights Last seen
LEXUS1 - 3 2026-06-30
TRACER1 - 1 2026-07-10

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-07-10 TRACER1 - Jul 10, 17:10 UTCJul 10, 17:50 UTC40m
2026-06-30 LEXUS1 - Jun 30, 18:00 UTCJun 30, 19:00 UTC1h 0m
2026-06-30 LEXUS1 RND → AFW Jun 30, 15:30 UTCJun 30, 16:10 UTC40m
2026-06-29 LEXUS1 - Jun 29, 16:15 UTCJun 29, 16:59 UTC45m

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 65-10421 page for operator, model, and routing details .

Mode-S ADFFCD frequently asked

What is Mode-S code ADFFCD?
ADFFCD is an ICAO 24-bit transponder address. Assigned to 65-10421.
Is ADFFCD 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 ADFFCD, octal 53377715, decimal 11,403,213.
What flights does ADFFCD operate?
Mode-S ADFFCD has broadcast 2 distinct callsigns, including LEXUS1, TRACER1.