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sensors Mode-S transponder

A8A1C2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N65504 · CESSNA TR182 Turbo Skylane RG · operated by BG IP LLC

Hex
A8A1C2
Octal
52120702
Decimal
11,051,458
Country
US
Tail
N65504
Type
C82T
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
123
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S A8A1C2.

Country allocation

The ICAO 24-bit address A8A1C2 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
N65504 - 123 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N65504 - Jul 26, 22:25 UTCJul 26, 22:30 UTC5m
2026-07-26 N65504 - Jul 26, 20:15 UTCJul 26, 20:50 UTC35m
2026-07-26 N65504 PAO → MOD Jul 26, 18:50 UTCJul 26, 19:40 UTC50m
2026-07-25 N65504 - Jul 25, 21:50 UTCJul 25, 22:15 UTC25m
2026-07-25 N65504 - Jul 25, 18:45 UTCJul 25, 19:10 UTC25m
2026-07-24 N65504 - Jul 24, 21:05 UTCJul 24, 22:15 UTC1h 10m
2026-07-24 N65504 - Jul 24, 18:55 UTCJul 24, 20:10 UTC1h 15m
2026-07-22 N65504 PAO → PAO Jul 22, 00:10 UTCJul 22, 01:00 UTC50m
2026-07-21 N65504 - Jul 21, 01:40 UTCJul 21, 01:45 UTC5m
2026-07-21 N65504 PAO → PAO Jul 21, 01:15 UTCJul 21, 01:25 UTC10m
2026-07-21 N65504 PAO → PAO Jul 21, 00:45 UTCJul 21, 00:50 UTC5m
2026-07-19 N65504 PAO → PAO Jul 19, 18:45 UTCJul 19, 18:50 UTC5m
2026-07-19 N65504 PAO → PAO Jul 19, 18:25 UTCJul 19, 18:30 UTC5m
2026-07-19 N65504 - Jul 19, 00:25 UTCJul 19, 01:35 UTC1h 10m
2026-07-18 N65504 - Jul 18, 17:45 UTCJul 18, 18:55 UTC1h 10m
2026-07-18 N65504 PAO → PAO Jul 18, 01:20 UTCJul 18, 02:14 UTC55m
2026-07-16 N65504 PAO → PAO Jul 16, 22:19 UTCJul 16, 23:10 UTC50m
2026-07-16 N65504 - Jul 16, 19:14 UTCJul 16, 19:40 UTC25m
2026-07-16 N65504 - Jul 16, 18:10 UTCJul 16, 18:34 UTC25m
2026-07-15 N65504 SAC → PAO Jul 15, 23:00 UTCJul 15, 23:45 UTC45m
2026-07-15 N65504 PAO → SAC Jul 15, 14:40 UTCJul 15, 15:20 UTC40m
2026-07-12 N65504 - Jul 12, 17:01 UTCJul 12, 17:20 UTC20m
2026-07-12 N65504 - Jul 12, 16:45 UTCJul 12, 16:55 UTC10m
2026-07-12 N65504 - Jul 12, 16:01 UTCJul 12, 16:30 UTC30m
2026-07-11 N65504 - Jul 11, 23:10 UTCJul 11, 23:30 UTC20m
2026-07-11 N65504 - Jul 11, 21:50 UTCJul 11, 22:35 UTC45m
2026-07-11 N65504 - Jul 11, 18:55 UTCJul 11, 19:40 UTC45m
2026-07-11 N65504 PAO → CCR Jul 11, 17:45 UTCJul 11, 18:10 UTC25m
2026-07-10 N65504 PAO → PAO Jul 10, 20:20 UTCJul 10, 23:10 UTC2h 51m
2026-07-10 N65504 PAO → PAO Jul 10, 17:00 UTCJul 10, 17:05 UTC5m
2026-07-10 N65504 PAO → PAO Jul 10, 16:40 UTCJul 10, 16:50 UTC10m
2026-07-08 N65504 PAO → PAO Jul 8, 23:05 UTCJul 9, 01:10 UTC2h 5m
2026-07-08 N65504 PAO → PAO Jul 8, 19:35 UTCJul 8, 20:50 UTC1h 15m
2026-07-06 N65504 - Jul 6, 23:25 UTCJul 7, 00:55 UTC1h 30m
2026-07-06 N65504 - Jul 6, 22:10 UTCJul 6, 22:55 UTC45m
2026-07-06 N65504 PAO → PAO Jul 6, 18:35 UTCJul 6, 19:40 UTC1h 5m
2026-07-04 N65504 SBD → PAO Jul 4, 21:10 UTCJul 4, 23:25 UTC2h 15m
2026-07-04 N65504 - Jul 4, 16:45 UTCJul 4, 19:35 UTC2h 50m
2026-07-04 N65504 PAO → PAO Jul 4, 00:35 UTCJul 4, 01:30 UTC55m
2026-07-02 N65504 PAO → PAO Jul 2, 22:30 UTCJul 2, 23:15 UTC45m
2026-07-02 N65504 PAO → PAO Jul 2, 17:45 UTCJul 2, 18:20 UTC35m
2026-07-02 N65504 PAO → PAO Jul 2, 16:10 UTCJul 2, 16:15 UTC5m
2026-07-02 N65504 PAO → PAO Jul 2, 15:45 UTCJul 2, 15:55 UTC10m
2026-07-02 N65504 PAO → PAO Jul 2, 15:35 UTCJul 2, 15:40 UTC5m
2026-06-30 N65504 MCC → PAO Jun 30, 19:55 UTCJun 30, 20:40 UTC45m
2026-06-30 N65504 PAO → MCC Jun 30, 16:50 UTCJun 30, 17:40 UTC50m
2026-06-27 N65504 PAO → PAO Jun 27, 21:25 UTCJun 27, 22:20 UTC55m
2026-06-27 N65504 PAO → PAO Jun 27, 19:45 UTCJun 27, 20:44 UTC1h 0m
2026-06-25 N65504 PAO → PAO Jun 25, 19:54 UTCJun 25, 19:59 UTC5m
2026-06-25 N65504 PAO → PAO Jun 25, 19:24 UTCJun 25, 19:29 UTC5m

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 N65504 page for operator, model, and routing details .

Mode-S A8A1C2 frequently asked

What is Mode-S code A8A1C2?
A8A1C2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N65504.
Where is Mode-S A8A1C2 registered?
Mode-S code A8A1C2 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 A8A1C2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8A1C2, octal 52120702, decimal 11,051,458.
What flights does A8A1C2 operate?
Mode-S A8A1C2 has broadcast 1 distinct callsign, including N65504.