Apparatus

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sensors Mode-S transponder

A6588D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N508KD · CESSNA 560 Citation Ultra · operated by AERO AIR CHARTER HOLDING LLC

Hex
A6588D
Octal
51454215
Decimal
10,901,645
Country
US
Tail
N508KD
Type
C560
No current signal · last broadcast 17h ago
Flights observed
205
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S A6588D.

Country allocation

The ICAO 24-bit address A6588D 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
N508KD - 205 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N508KD - Jul 13, 21:00 UTCJul 13, 22:50 UTC1h 50m
2026-07-13 N508KD - Jul 13, 13:00 UTCJul 13, 14:00 UTC1h 0m
2026-07-13 N508KD - Jul 13, 12:00 UTCJul 13, 12:10 UTC10m
2026-07-12 N508KD - Jul 12, 22:40 UTCJul 12, 23:45 UTC1h 5m
2026-07-12 N508KD - Jul 12, 19:30 UTCJul 12, 20:05 UTC35m
2026-07-12 N508KD - Jul 12, 16:45 UTCJul 12, 18:40 UTC1h 55m
2026-07-12 N508KD - Jul 12, 14:25 UTCJul 12, 15:15 UTC50m
2026-07-12 N508KD - Jul 12, 13:15 UTCJul 12, 13:50 UTC35m
2026-07-12 N508KD - Jul 12, 11:55 UTCJul 12, 12:20 UTC25m
2026-07-11 N508KD - Jul 11, 18:05 UTCJul 11, 18:40 UTC35m
2026-07-11 N508KD - Jul 11, 16:00 UTCJul 11, 17:25 UTC1h 25m
2026-07-10 N508KD AUO → CMH Jul 10, 17:05 UTCJul 10, 18:45 UTC1h 40m
2026-07-10 N508KD - Jul 10, 15:10 UTCJul 10, 15:45 UTC35m
2026-07-10 N508KD - Jul 10, 13:45 UTCJul 10, 14:30 UTC45m
2026-07-10 N508KD - Jul 10, 11:45 UTCJul 10, 12:45 UTC1h 0m
2026-07-09 N508KD - Jul 9, 19:45 UTCJul 9, 20:30 UTC45m
2026-06-29 N508KD - Jun 29, 13:24 UTCJun 29, 14:04 UTC40m
2026-06-27 N508KD - Jun 27, 20:55 UTCJun 27, 22:29 UTC1h 35m
2026-06-26 N508KD - Jun 26, 19:20 UTCJun 26, 21:50 UTC2h 30m
2026-06-26 N508KD - Jun 26, 15:05 UTCJun 26, 15:20 UTC15m
2026-06-26 N508KD - Jun 26, 13:55 UTCJun 26, 14:19 UTC25m
2026-06-26 N508KD - Jun 26, 12:34 UTCJun 26, 13:15 UTC40m
2026-06-26 N508KD - Jun 26, 10:50 UTCJun 26, 12:00 UTC1h 10m
2026-06-25 N508KD - Jun 25, 21:50 UTCJun 25, 22:04 UTC15m
2026-06-25 N508KD - Jun 25, 20:30 UTCJun 25, 21:15 UTC45m
2026-06-25 N508KD - Jun 25, 18:50 UTCJun 25, 19:05 UTC15m
2026-06-25 N508KD - Jun 25, 17:30 UTCJun 25, 18:00 UTC30m
2026-06-25 N508KD - Jun 25, 13:55 UTCJun 25, 14:44 UTC50m
2026-06-25 N508KD - Jun 25, 12:25 UTCJun 25, 13:09 UTC45m
2026-06-23 N508KD - Jun 23, 22:40 UTCJun 23, 23:39 UTC1h 0m
2026-06-23 N508KD - Jun 23, 21:05 UTCJun 23, 21:59 UTC55m
2026-06-23 N508KD - Jun 23, 20:24 UTCJun 23, 20:34 UTC10m
2026-06-21 N508KD - Jun 21, 16:49 UTCJun 21, 17:24 UTC35m
2026-06-21 N508KD - Jun 21, 13:50 UTCJun 21, 14:40 UTC50m
2026-06-20 N508KD TPA → PNS Jun 20, 20:49 UTCJun 20, 22:20 UTC1h 30m
2026-06-20 N508KD - Jun 20, 14:29 UTCJun 20, 15:19 UTC50m
2026-06-20 N508KD - Jun 20, 12:54 UTCJun 20, 13:04 UTC10m
2026-06-19 N508KD - Jun 19, 23:09 UTCJun 19, 23:34 UTC25m
2026-06-19 N508KD - Jun 19, 21:34 UTCJun 19, 22:24 UTC50m
2026-06-19 N508KD - Jun 19, 19:25 UTCJun 19, 20:09 UTC45m
2026-06-19 N508KD - Jun 19, 16:04 UTCJun 19, 16:55 UTC50m
2026-06-19 N508KD - Jun 19, 15:09 UTCJun 19, 15:19 UTC10m
2026-06-19 N508KD PDK → PNS Jun 19, 12:25 UTCJun 19, 13:24 UTC1h 0m
2026-06-18 N508KD - Jun 18, 12:45 UTCJun 18, 13:45 UTC1h 0m
2026-06-17 N508KD - Jun 17, 22:00 UTCJun 17, 22:20 UTC20m
2026-06-17 N508KD - Jun 17, 20:50 UTCJun 17, 21:25 UTC35m
2026-06-17 N508KD - Jun 17, 13:20 UTCJun 17, 14:10 UTC50m
2026-06-16 N508KD - Jun 16, 21:15 UTCJun 16, 23:00 UTC1h 45m
2026-06-16 N508KD - Jun 16, 17:49 UTCJun 16, 20:05 UTC2h 16m
2026-06-16 N508KD - Jun 16, 12:45 UTCJun 16, 15:05 UTC2h 20m

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 N508KD page for operator, model, and routing details .

Mode-S A6588D frequently asked

What is Mode-S code A6588D?
A6588D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N508KD.
Where is Mode-S A6588D registered?
Mode-S code A6588D 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 A6588D 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 A6588D, octal 51454215, decimal 10,901,645.
What flights does A6588D operate?
Mode-S A6588D has broadcast 1 distinct callsign, including N508KD.