sensors Mode-S transponder

A912F0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N684JW · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A912F0
Octal
52211360
Decimal
11,080,432
Country
US
Tail
N684JW
Type
E145
No current signal · last broadcast 12h ago
Flights observed
11
Distinct callsigns
6
Country
US
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S A912F0.

Country allocation

The ICAO 24-bit address A912F0 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 6 distinct

Callsign Airline Flights Last seen
PDT6120 - 3 2026-04-13
PDT5930 - 3 2026-04-13
PDT6083 Piedmont Airlines 2 2026-04-13
PDT6051 Piedmont Airlines 1 2026-04-14
PDT6023 - 1 2026-04-12
PDT5903 - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 PDT6051 CVG → PHL Apr 14, 10:20 UTCApr 14, 11:40 UTC1h 20m
2026-04-13 PDT6083 CAE → PHL Apr 13, 21:35 UTCApr 13, 22:25 UTC50m
2026-04-13 PDT6083 CAE → PHL Apr 13, 20:05 UTCApr 13, 20:50 UTC45m
2026-04-13 PDT6120 - Apr 13, 17:02 UTCApr 13, 18:03 UTC1h 1m
2026-04-13 PDT6120 - Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 PDT6120 - Apr 13, 15:05 UTCApr 13, 16:05 UTC1h 0m
2026-04-13 PDT5930 - Apr 13, 12:20 UTCApr 13, 12:35 UTC15m
2026-04-13 PDT5930 - Apr 13, 11:55 UTCApr 13, 12:35 UTC40m
2026-04-13 PDT5930 - Apr 13, 11:47 UTCApr 13, 12:49 UTC1h 2m
2026-04-13 PDT5903 - Apr 13, 00:57 UTCApr 13, 01:54 UTC57m
2026-04-12 PDT6023 - Apr 12, 17:45 UTCApr 12, 18:55 UTC1h 10m

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 N684JW page for operator, model, and routing details .

Mode-S A912F0 frequently asked

What is Mode-S code A912F0?
A912F0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N684JW.
Where is Mode-S A912F0 registered?
Mode-S code A912F0 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A912F0 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A912F0, octal 52211360, decimal 11,080,432.
What flights does A912F0 operate?
Mode-S A912F0 has broadcast 6 distinct callsigns, including PDT6120, PDT5930, PDT6083, PDT6051, PDT6023.