Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB9F4F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N848TW · PILATUS PC-12 · operated by TW LEASING LLC

Hex
AB9F4F
Octal
52717517
Decimal
11,247,439
Country
US
Tail
N848TW
Type
PC12
No current signal · last broadcast 1d ago
Flights observed
11
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AB9F4F.

Country allocation

The ICAO 24-bit address AB9F4F 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 1 distinct

Callsign Airline Flights Last seen
GPD848 Tradewind Aviation 11 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-13 GPD848 TEB → OXC Apr 13, 21:10 UTCApr 13, 21:35 UTC25m
2026-04-13 GPD848 TEB → OXC Apr 13, 19:10 UTCApr 13, 19:35 UTC25m
2026-04-13 GPD848 TEB → OXC Apr 13, 18:05 UTCApr 13, 18:20 UTC15m
2026-04-13 GPD848 TEB → OXC Apr 13, 15:55 UTCApr 13, 16:15 UTC20m
2026-04-13 GPD848 TEB → OXC Apr 13, 14:30 UTCApr 13, 14:55 UTC25m
2026-04-13 GPD848 TEB → OXC Apr 13, 12:45 UTCApr 13, 12:55 UTC10m
2026-04-13 GPD848 TEB → OXC Apr 13, 12:20 UTCApr 13, 12:40 UTC20m
2026-04-13 GPD848 TEB → OXC Apr 13, 02:00 UTCApr 13, 02:10 UTC10m
2026-04-13 GPD848 TEB → OXC Apr 13, 00:50 UTCApr 13, 01:00 UTC10m
2026-04-12 GPD848 TEB → OXC Apr 12, 19:15 UTCApr 12, 19:35 UTC20m
2026-04-12 GPD848 TEB → OXC Apr 12, 18:10 UTCApr 12, 18:25 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 N848TW page for operator, model, and routing details .

Mode-S AB9F4F frequently asked

What is Mode-S code AB9F4F?
AB9F4F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N848TW.
Where is Mode-S AB9F4F registered?
Mode-S code AB9F4F 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 AB9F4F 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 AB9F4F, octal 52717517, decimal 11,247,439.
What flights does AB9F4F operate?
Mode-S AB9F4F has broadcast 1 distinct callsign, including GPD848.