Apparatus

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sensors Mode-S transponder

ADFFA7

ICAO 24-bit transponder address

Currently assigned to 70-1577 · Northrop T-38C Talon

Hex
ADFFA7
Octal
53377647
Decimal
11,403,175
Tail
70-1577
Type
T38
No current signal · last broadcast 1d ago
Flights observed
4
Distinct callsigns
3
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ADFFA7.

Callsign history 3 distinct

Callsign Airline Flights Last seen
WIZZO3 - 2 2026-04-13
DEADLY9 - 1 2026-04-13
CUCKOO1 - 1 2026-04-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-13 CUCKOO1 - Apr 13, 18:25 UTCApr 13, 19:15 UTC50m
2026-04-13 WIZZO3 - Apr 13, 16:15 UTCApr 13, 16:40 UTC25m
2026-04-13 WIZZO3 - Apr 13, 16:00 UTCApr 13, 16:15 UTC15m
2026-04-13 DEADLY9 - Apr 13, 13:30 UTCApr 13, 14:00 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 70-1577 page for operator, model, and routing details .

Mode-S ADFFA7 frequently asked

What is Mode-S code ADFFA7?
ADFFA7 is an ICAO 24-bit transponder address. Assigned to 70-1577.
Is ADFFA7 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 ADFFA7, octal 53377647, decimal 11,403,175.
What flights does ADFFA7 operate?
Mode-S ADFFA7 has broadcast 3 distinct callsigns, including WIZZO3, DEADLY9, CUCKOO1.