Apparatus

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sensors Mode-S transponder

A6AAD1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N529ER · CESSNA 172 Skyhawk · operated by PS N529ER LLC

Hex
A6AAD1
Octal
51525321
Decimal
10,922,705
Country
US
Tail
N529ER
Type
C172
No current signal · last broadcast 8h ago
Flights observed
156
Distinct callsigns
1
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A6AAD1.

Country allocation

The ICAO 24-bit address A6AAD1 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
N529ER - 156 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N529ER - Jul 14, 00:20 UTCJul 14, 00:40 UTC20m
2026-07-13 N529ER - Jul 13, 21:55 UTCJul 13, 22:50 UTC55m
2026-07-13 N529ER - Jul 13, 15:50 UTCJul 13, 16:05 UTC15m
2026-07-13 N529ER - Jul 13, 14:45 UTCJul 13, 15:10 UTC25m
2026-07-13 N529ER - Jul 13, 12:00 UTCJul 13, 13:25 UTC1h 25m
2026-07-12 N529ER - Jul 12, 14:50 UTCJul 12, 15:55 UTC1h 5m
2026-07-11 N529ER - Jul 11, 17:10 UTCJul 11, 19:00 UTC1h 50m
2026-07-11 N529ER - Jul 11, 13:30 UTCJul 11, 15:05 UTC1h 35m
2026-07-10 N529ER - Jul 10, 20:05 UTCJul 10, 21:40 UTC1h 35m
2026-07-10 N529ER - Jul 10, 17:05 UTCJul 10, 17:40 UTC35m
2026-07-10 N529ER GRB → GRB Jul 10, 12:15 UTCJul 10, 13:15 UTC1h 0m
2026-07-09 N529ER - Jul 9, 21:40 UTCJul 9, 23:10 UTC1h 30m
2026-07-08 N529ER - Jul 8, 17:25 UTCJul 8, 18:45 UTC1h 20m
2026-07-08 N529ER - Jul 8, 15:25 UTCJul 8, 16:30 UTC1h 5m
2026-07-07 N529ER GRB → GRB Jul 7, 23:30 UTCJul 8, 00:35 UTC1h 5m
2026-07-07 N529ER - Jul 7, 21:20 UTCJul 7, 22:50 UTC1h 30m
2026-07-07 N529ER - Jul 7, 16:55 UTCJul 7, 18:25 UTC1h 30m
2026-07-07 N529ER - Jul 7, 12:45 UTCJul 7, 14:00 UTC1h 15m
2026-07-06 N529ER GRB → GRB Jul 6, 20:20 UTCJul 6, 22:10 UTC1h 50m
2026-07-06 N529ER - Jul 6, 18:35 UTCJul 6, 19:15 UTC40m
2026-07-06 N529ER GRB → GRB Jul 6, 14:30 UTCJul 6, 16:00 UTC1h 30m
2026-06-30 N529ER - Jun 30, 18:10 UTCJun 30, 20:00 UTC1h 50m
2026-06-29 N529ER GRB → GRB Jun 29, 22:19 UTCJun 29, 23:19 UTC1h 0m
2026-06-29 N529ER GRB → GRB Jun 29, 19:29 UTCJun 29, 21:34 UTC2h 5m
2026-06-28 N529ER GRB → GRB Jun 28, 19:44 UTCJun 28, 19:59 UTC15m
2026-06-27 N529ER SBM → GRB Jun 27, 00:25 UTCJun 27, 01:00 UTC35m
2026-06-26 N529ER - Jun 26, 22:14 UTCJun 26, 23:49 UTC1h 35m
2026-06-26 N529ER - Jun 26, 19:45 UTCJun 26, 21:30 UTC1h 45m
2026-06-26 N529ER - Jun 26, 16:24 UTCJun 26, 17:35 UTC1h 10m
2026-06-26 N529ER - Jun 26, 14:19 UTCJun 26, 15:39 UTC1h 20m
2026-06-23 N529ER GRB → GRB Jun 23, 23:29 UTCJun 24, 00:59 UTC1h 30m
2026-06-23 N529ER - Jun 23, 19:59 UTCJun 23, 21:45 UTC1h 45m
2026-06-23 N529ER - Jun 23, 16:35 UTCJun 23, 17:30 UTC55m
2026-06-23 N529ER GRB → GRB Jun 23, 14:29 UTCJun 23, 15:44 UTC1h 15m
2026-06-23 N529ER - Jun 23, 12:15 UTCJun 23, 13:29 UTC1h 15m
2026-06-22 N529ER GRB → GRB Jun 22, 23:20 UTCJun 23, 00:45 UTC1h 25m
2026-06-22 N529ER GRB → GRB Jun 22, 21:35 UTCJun 22, 22:19 UTC45m
2026-06-22 N529ER - Jun 22, 19:24 UTCJun 22, 20:14 UTC50m
2026-06-22 N529ER - Jun 22, 14:59 UTCJun 22, 15:45 UTC45m
2026-06-22 N529ER GRB → GRB Jun 22, 12:19 UTCJun 22, 13:54 UTC1h 35m
2026-06-21 N529ER GRB → GRB Jun 21, 17:54 UTCJun 21, 19:55 UTC2h 0m
2026-06-21 N529ER - Jun 21, 14:54 UTCJun 21, 16:30 UTC1h 35m
2026-06-21 N529ER - Jun 21, 12:49 UTCJun 21, 13:59 UTC1h 10m
2026-06-20 N529ER GRB → GRB Jun 20, 12:24 UTCJun 20, 13:55 UTC1h 30m
2026-06-19 N529ER - Jun 19, 18:54 UTCJun 19, 19:39 UTC45m
2026-06-19 N529ER GRB → GRB Jun 19, 16:25 UTCJun 19, 17:34 UTC1h 10m
2026-06-19 N529ER - Jun 19, 14:19 UTCJun 19, 15:29 UTC1h 10m
2026-06-18 N529ER GRB → GRB Jun 18, 22:00 UTCJun 18, 22:45 UTC45m
2026-06-18 N529ER - Jun 18, 19:25 UTCJun 18, 20:30 UTC1h 5m
2026-06-18 N529ER - Jun 18, 16:35 UTCJun 18, 17:40 UTC1h 5m

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 N529ER page for operator, model, and routing details .

Mode-S A6AAD1 frequently asked

What is Mode-S code A6AAD1?
A6AAD1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N529ER.
Where is Mode-S A6AAD1 registered?
Mode-S code A6AAD1 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 A6AAD1 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6AAD1, octal 51525321, decimal 10,922,705.
What flights does A6AAD1 operate?
Mode-S A6AAD1 has broadcast 1 distinct callsign, including N529ER.