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sensors Mode-S transponder

AAF558

ICAO 24-bit transponder address · allocated to United States

Hex
AAF558
Octal
52572530
Decimal
11,203,928
Country
US
No current signal · last broadcast Jul 25, 18:25 UTC
Flights observed
126
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 18:25 UTC

Last known position

Most recent position reported by Mode-S AAF558.

Country allocation

The ICAO 24-bit address AAF558 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
N805KG - 126 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N805KG - Jul 25, 16:50 UTCJul 25, 18:25 UTC1h 35m
2026-07-25 N805KG - Jul 25, 16:05 UTCJul 25, 16:15 UTC10m
2026-07-25 N805KG BOS → BED Jul 25, 02:40 UTCJul 25, 02:50 UTC10m
2026-07-25 N805KG - Jul 25, 01:50 UTCJul 25, 02:30 UTC40m
2026-07-24 N805KG - Jul 24, 21:05 UTCJul 24, 22:55 UTC1h 50m
2026-07-23 N805KG - Jul 23, 21:35 UTCJul 23, 23:40 UTC2h 5m
2026-07-23 N805KG - Jul 23, 10:55 UTCJul 23, 13:10 UTC2h 15m
2026-07-21 N805KG BED → BED Jul 21, 10:50 UTCJul 21, 12:55 UTC2h 5m
2026-07-19 N805KG TEB → BED Jul 19, 22:35 UTCJul 19, 23:55 UTC1h 20m
2026-07-19 N805KG BED → TEB Jul 19, 15:05 UTCJul 19, 16:40 UTC1h 35m
2026-07-18 N805KG TEB → BED Jul 18, 00:35 UTCJul 18, 02:09 UTC1h 35m
2026-07-18 N805KG - Jul 18, 00:19 UTCJul 18, 00:29 UTC10m
2026-07-17 N805KG - Jul 17, 20:20 UTCJul 17, 22:55 UTC2h 35m
2026-07-17 N805KG - Jul 17, 12:50 UTCJul 17, 14:35 UTC1h 45m
2026-07-16 N805KG TEB → BED Jul 16, 16:30 UTCJul 16, 18:15 UTC1h 45m
2026-07-16 N805KG - Jul 16, 11:05 UTCJul 16, 12:00 UTC55m
2026-07-16 N805KG - Jul 16, 10:40 UTCJul 16, 10:59 UTC20m
2026-07-15 N805KG - Jul 15, 13:50 UTCJul 15, 14:40 UTC50m
2026-07-15 N805KG - Jul 15, 02:05 UTCJul 15, 02:45 UTC40m
2026-07-14 N805KG - Jul 14, 19:35 UTCJul 14, 20:40 UTC1h 5m
2026-07-14 N805KG BOS → FOK Jul 14, 17:05 UTCJul 14, 19:00 UTC1h 55m
2026-07-14 N805KG - Jul 14, 15:10 UTCJul 14, 16:15 UTC1h 5m
2026-07-14 N805KG BOS → TSS Jul 14, 13:50 UTCJul 14, 15:00 UTC1h 10m
2026-07-14 N805KG - Jul 14, 13:00 UTCJul 14, 13:10 UTC10m
2026-07-13 N805KG - Jul 13, 04:55 UTCJul 13, 05:05 UTC10m
2026-07-13 N805KG LGA → BOS Jul 13, 03:40 UTCJul 13, 04:40 UTC1h 0m
2026-07-12 N805KG - Jul 12, 21:35 UTCJul 12, 23:05 UTC1h 30m
2026-07-09 N805KG - Jul 9, 23:05 UTCJul 9, 23:45 UTC40m
2026-07-09 N805KG - Jul 9, 22:10 UTCJul 9, 22:30 UTC20m
2026-07-09 N805KG - Jul 9, 20:55 UTCJul 9, 21:05 UTC10m
2026-07-09 N805KG BED → BED Jul 9, 17:10 UTCJul 9, 17:40 UTC30m
2026-07-06 N805KG - Jul 6, 11:55 UTCJul 6, 14:05 UTC2h 10m
2026-07-05 N805KG - Jul 5, 03:45 UTCJul 5, 04:55 UTC1h 10m
2026-07-04 N805KG - Jul 4, 18:30 UTCJul 4, 20:00 UTC1h 30m
2026-07-04 N805KG - Jul 4, 11:30 UTCJul 4, 13:05 UTC1h 35m
2026-07-04 N805KG - Jul 4, 10:20 UTCJul 4, 10:40 UTC20m
2026-07-02 N805KG GON → BED Jul 2, 00:00 UTCJul 2, 00:30 UTC30m
2026-07-01 N805KG - Jul 1, 22:20 UTCJul 1, 23:00 UTC40m
2026-07-01 N805KG - Jul 1, 18:00 UTCJul 1, 19:30 UTC1h 30m
2026-06-30 N805KG TEB → BED Jun 30, 21:55 UTCJun 30, 23:25 UTC1h 30m
2026-06-30 N805KG - Jun 30, 18:50 UTCJun 30, 20:20 UTC1h 30m
2026-06-30 N805KG - Jun 30, 18:05 UTCJun 30, 18:15 UTC10m
2026-06-29 N805KG - Jun 29, 13:00 UTCJun 29, 14:09 UTC1h 10m
2026-06-29 N805KG - Jun 29, 11:10 UTCJun 29, 12:05 UTC55m
2026-06-26 N805KG - Jun 26, 20:15 UTCJun 26, 23:00 UTC2h 45m
2026-06-26 N805KG - Jun 26, 16:30 UTCJun 26, 17:00 UTC30m
2026-06-24 N805KG - Jun 24, 23:24 UTCJun 24, 23:34 UTC10m
2026-06-24 N805KG JRA → BOS Jun 24, 21:54 UTCJun 24, 23:10 UTC1h 15m
2026-06-24 N805KG - Jun 24, 19:04 UTCJun 24, 20:09 UTC1h 5m
2026-06-21 N805KG - Jun 21, 17:10 UTCJun 21, 20:09 UTC3h 0m

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 AAF558 frequently asked

What is Mode-S code AAF558?
AAF558 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S AAF558 registered?
Mode-S code AAF558 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 AAF558 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 18:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAF558, octal 52572530, decimal 11,203,928.
What flights does AAF558 operate?
Mode-S AAF558 has broadcast 1 distinct callsign, including N805KG.