sensors Mode-S transponder

A4D525

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N410LL · operated by VANS AIRCRAFT INC

Hex
A4D525
Octal
51152445
Decimal
10,802,469
Country
US
Tail
N410LL
No current signal · last broadcast 5d ago
Flights observed
99
Distinct callsigns
1
Country
US
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S A4D525.

Country allocation

The ICAO 24-bit address A4D525 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
N410LL - 99 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 N410LL - Jul 9, 22:55 UTCJul 9, 23:05 UTC10m
2026-07-08 N410LL ATW → ATW Jul 8, 18:15 UTCJul 8, 19:20 UTC1h 5m
2026-07-08 N410LL ATW → ATW Jul 8, 16:15 UTCJul 8, 17:30 UTC1h 15m
2026-07-07 N410LL ATW → ATW Jul 7, 13:50 UTCJul 7, 15:40 UTC1h 50m
2026-07-06 N410LL - Jul 6, 23:05 UTCJul 6, 23:20 UTC15m
2026-07-06 N410LL - Jul 6, 22:10 UTCJul 6, 22:20 UTC10m
2026-07-06 N410LL ATW → ATW Jul 6, 20:25 UTCJul 6, 21:20 UTC55m
2026-07-06 N410LL - Jul 6, 18:20 UTCJul 6, 18:45 UTC25m
2026-07-06 N410LL - Jul 6, 14:30 UTCJul 6, 15:20 UTC50m
2026-07-06 N410LL - Jul 6, 13:05 UTCJul 6, 13:50 UTC45m
2026-07-05 N410LL ATW → ATW Jul 5, 02:35 UTCJul 5, 03:35 UTC1h 0m
2026-07-02 N410LL ATW → ATW Jul 2, 14:50 UTCJul 2, 15:05 UTC15m
2026-07-01 N410LL ATW → ATW Jul 1, 16:15 UTCJul 1, 16:50 UTC35m
2026-06-30 N410LL - Jun 30, 20:00 UTCJun 30, 21:15 UTC1h 15m
2026-06-30 N410LL - Jun 30, 18:05 UTCJun 30, 18:55 UTC50m
2026-06-29 N410LL ATW → ATW Jun 29, 22:05 UTCJun 30, 01:14 UTC3h 10m
2026-06-28 N410LL ATW → ATW Jun 28, 15:29 UTCJun 28, 16:19 UTC50m
2026-06-27 N410LL - Jun 27, 23:45 UTCJun 28, 00:25 UTC40m
2026-06-27 N410LL ATW → AUW Jun 27, 20:09 UTCJun 27, 20:49 UTC40m
2026-06-27 N410LL ATW → ATW Jun 27, 18:04 UTCJun 27, 18:39 UTC35m
2026-06-27 N410LL ATW → ATW Jun 27, 14:39 UTCJun 27, 16:20 UTC1h 40m
2026-06-23 N410LL ATW → ATW Jun 23, 18:14 UTCJun 23, 19:19 UTC1h 5m
2026-06-23 N410LL - Jun 23, 00:04 UTCJun 23, 01:04 UTC1h 0m
2026-06-21 N410LL - Jun 21, 14:54 UTCJun 21, 16:34 UTC1h 40m
2026-06-19 N410LL - Jun 19, 16:34 UTCJun 19, 17:34 UTC1h 0m
2026-06-19 N410LL - Jun 19, 14:34 UTCJun 19, 15:29 UTC55m
2026-06-19 N410LL - Jun 19, 12:44 UTCJun 19, 13:54 UTC1h 10m
2026-06-16 N410LL - Jun 16, 14:35 UTCJun 16, 15:20 UTC45m
2026-06-16 N410LL ATW → ATW Jun 16, 01:40 UTCJun 16, 03:05 UTC1h 25m
2026-06-14 N410LL GRB → ATW Jun 14, 04:05 UTCJun 14, 04:20 UTC15m
2026-06-05 N410LL - Jun 5, 22:05 UTCJun 5, 22:20 UTC15m
2026-06-04 N410LL ATW → ATW Jun 4, 12:30 UTCJun 4, 13:40 UTC1h 10m
2026-06-03 N410LL - Jun 3, 16:05 UTCJun 3, 17:20 UTC1h 15m
2026-06-03 N410LL - Jun 3, 14:35 UTCJun 3, 15:25 UTC50m
2026-06-03 N410LL - Jun 3, 02:30 UTCJun 3, 03:20 UTC50m
2026-06-02 N410LL - Jun 2, 16:10 UTCJun 2, 17:30 UTC1h 20m
2026-06-02 N410LL ATW → ATW Jun 2, 14:20 UTCJun 2, 15:25 UTC1h 5m
2026-06-02 N410LL - Jun 2, 02:10 UTCJun 2, 03:50 UTC1h 40m
2026-06-01 N410LL - Jun 1, 21:50 UTCJun 1, 22:30 UTC40m
2026-05-31 N410LL - May 31, 16:30 UTCMay 31, 17:10 UTC40m
2026-05-29 N410LL - May 29, 19:35 UTCMay 29, 20:30 UTC55m
2026-05-29 N410LL - May 29, 16:20 UTCMay 29, 17:35 UTC1h 15m
2026-05-29 N410LL ATW → ATW May 29, 14:25 UTCMay 29, 15:30 UTC1h 6m
2026-05-29 N410LL - May 29, 02:35 UTCMay 29, 04:30 UTC1h 55m
2026-05-28 N410LL ATW → ATW May 28, 18:20 UTCMay 28, 19:50 UTC1h 30m
2026-05-28 N410LL - May 28, 16:35 UTCMay 28, 17:30 UTC55m
2026-05-28 N410LL - May 28, 15:30 UTCMay 28, 16:05 UTC35m
2026-05-28 N410LL - May 28, 02:30 UTCMay 28, 03:20 UTC50m
2026-05-26 N410LL ATW → ATW May 26, 20:24 UTCMay 26, 22:44 UTC2h 20m
2026-05-26 N410LL ATW → ATW May 26, 17:20 UTCMay 26, 18:19 UTC1h 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.

Prefer a tail-number view? See the N410LL page for operator, model, and routing details .

Mode-S A4D525 frequently asked

What is Mode-S code A4D525?
A4D525 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N410LL.
Where is Mode-S A4D525 registered?
Mode-S code A4D525 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 A4D525 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4D525, octal 51152445, decimal 10,802,469.
What flights does A4D525 operate?
Mode-S A4D525 has broadcast 1 distinct callsign, including N410LL.