Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADFF5E

ICAO 24-bit transponder address

Hex
ADFF5E
Octal
53377536
Decimal
11,403,102
No current signal · last broadcast 17h ago
Flights observed
4
Distinct callsigns
4
Country
-
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S ADFF5E.

Callsign history 4 distinct

Callsign Airline Flights Last seen
TEMAN71 - 1 2026-07-10
PANTHR1 - 1 2026-07-13
ICEMAN2 - 1 2026-07-13
GNARLY1 - 1 2026-07-13

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-07-13 ICEMAN2 - Jul 13, 18:40 UTCJul 13, 19:20 UTC40m
2026-07-13 GNARLY1 - Jul 13, 15:40 UTCJul 13, 16:35 UTC55m
2026-07-13 PANTHR1 - Jul 13, 13:35 UTCJul 13, 14:25 UTC50m
2026-07-10 TEMAN71 - Jul 10, 18:50 UTCJul 10, 19:30 UTC40m

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.

Mode-S ADFF5E frequently asked

What is Mode-S code ADFF5E?
ADFF5E is an ICAO 24-bit transponder address.
Is ADFF5E broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADFF5E, octal 53377536, decimal 11,403,102.
What flights does ADFF5E operate?
Mode-S ADFF5E has broadcast 4 distinct callsigns, including TEMAN71, PANTHR1, ICEMAN2, GNARLY1.