Apparatus

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sensors Mode-S transponder

A24A13

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N247AU · operated by PEREGRINE HOWARD PARTNERS II LP

Hex
A24A13
Octal
50445023
Decimal
10,635,795
Country
US
Tail
N247AU
Type
C172
No current signal · last broadcast 17h ago
Flights observed
59
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S A24A13.

Country allocation

The ICAO 24-bit address A24A13 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
AUB123 - 59 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AUB123 AUO → AUO May 29, 16:15 UTCMay 29, 17:25 UTC1h 10m
2026-05-29 AUB123 AUO → AUO May 29, 11:10 UTCMay 29, 12:15 UTC1h 5m
2026-05-28 AUB123 AUO → AUO May 28, 17:45 UTCMay 28, 18:40 UTC55m
2026-05-28 AUB123 AUO → AUO May 28, 12:45 UTCMay 28, 13:55 UTC1h 10m
2026-05-27 AUB123 AUO → AUO May 27, 15:00 UTCMay 27, 15:55 UTC55m
2026-05-23 AUB123 AUO → AUO May 23, 19:40 UTCMay 23, 20:00 UTC20m
2026-05-23 AUB123 AUO → AUO May 23, 18:50 UTCMay 23, 19:35 UTC45m
2026-05-21 AUB123 AUO → AUO May 21, 22:10 UTCMay 21, 23:00 UTC50m
2026-05-21 AUB123 - May 21, 17:40 UTCMay 21, 17:55 UTC15m
2026-05-20 AUB123 - May 20, 16:45 UTCMay 20, 17:00 UTC15m
2026-05-20 AUB123 - May 20, 15:50 UTCMay 20, 16:10 UTC20m
2026-05-19 AUB123 - May 19, 19:40 UTCMay 19, 19:50 UTC10m
2026-05-19 AUB123 - May 19, 18:40 UTCMay 19, 18:50 UTC10m
2026-05-15 AUB123 AUO → AUO May 15, 21:30 UTCMay 15, 21:50 UTC20m
2026-05-14 AUB123 - May 14, 23:45 UTCMay 14, 23:55 UTC10m
2026-05-14 AUB123 - May 14, 21:35 UTCMay 14, 21:50 UTC15m
2026-05-13 AUB123 - May 13, 15:45 UTCMay 13, 15:55 UTC10m
2026-05-13 AUB123 - May 13, 15:05 UTCMay 13, 15:15 UTC10m
2026-05-11 AUB123 - May 11, 14:15 UTCMay 11, 14:30 UTC15m
2026-05-11 AUB123 - May 11, 13:15 UTCMay 11, 13:45 UTC30m
2026-05-08 AUB123 AUO → AUO May 8, 15:30 UTCMay 8, 16:45 UTC1h 15m
2026-05-05 AUB123 AUO → AUO May 5, 16:10 UTCMay 5, 17:10 UTC1h 0m
2026-05-04 AUB123 AUO → AUO May 4, 20:50 UTCMay 4, 22:00 UTC1h 10m
2026-05-04 AUB123 - May 4, 16:00 UTCMay 4, 16:20 UTC20m
2026-05-04 AUB123 - May 4, 15:05 UTCMay 4, 15:15 UTC10m
2026-05-02 AUB123 AUO → AUO May 2, 15:40 UTCMay 2, 17:15 UTC1h 35m
2026-05-01 AUB123 AUO → AUO May 1, 20:10 UTCMay 1, 21:30 UTC1h 20m
2026-05-01 AUB123 AUO → AUO May 1, 16:05 UTCMay 1, 16:50 UTC45m
2026-04-30 AUB123 AUO → AUO Apr 30, 22:00 UTCMay 1, 00:15 UTC2h 15m
2026-04-29 AUB123 AUO → AUO Apr 29, 14:45 UTCApr 29, 16:00 UTC1h 15m
2026-04-27 AUB123 AUO → AUO Apr 27, 21:35 UTCApr 27, 22:55 UTC1h 20m
2026-04-21 AUB123 AUO → AUO Apr 21, 22:10 UTCApr 21, 23:35 UTC1h 25m
2026-04-21 AUB123 AUO → AUO Apr 21, 17:15 UTCApr 21, 18:45 UTC1h 30m
2026-04-21 AUB123 AUO → AUO Apr 21, 13:20 UTCApr 21, 14:40 UTC1h 20m
2026-04-20 AUB123 AUO → AUO Apr 20, 22:25 UTCApr 20, 23:55 UTC1h 30m
2026-04-20 AUB123 AUO → AUO Apr 20, 18:55 UTCApr 20, 20:15 UTC1h 20m
2026-04-20 AUB123 AUO → AUO Apr 20, 12:30 UTCApr 20, 13:55 UTC1h 25m
2026-04-18 AUB123 AUO → AUO Apr 18, 17:35 UTCApr 18, 18:50 UTC1h 15m
2026-04-18 AUB123 AUO → AUO Apr 18, 11:35 UTCApr 18, 14:10 UTC2h 35m
2026-04-17 AUB123 AUO → AUO Apr 17, 22:35 UTCApr 17, 23:00 UTC25m
2026-04-17 AUB123 AUO → AUO Apr 17, 11:25 UTCApr 17, 12:45 UTC1h 20m
2026-04-16 AUB123 - Apr 16, 19:15 UTCApr 16, 19:30 UTC15m
2026-04-16 AUB123 - Apr 16, 18:35 UTCApr 16, 19:10 UTC35m
2026-04-16 AUB123 AUO → AUO Apr 16, 13:20 UTCApr 16, 14:15 UTC55m
2026-04-16 AUB123 - Apr 16, 01:10 UTCApr 16, 02:09 UTC1h 0m
2026-04-15 AUB123 - Apr 15, 23:40 UTCApr 16, 01:05 UTC1h 25m
2026-04-15 AUB123 AUO → AUO Apr 15, 21:30 UTCApr 15, 21:35 UTC5m
2026-04-15 AUB123 - Apr 15, 21:05 UTCApr 15, 21:25 UTC20m
2026-04-15 AUB123 - Apr 15, 20:45 UTCApr 15, 21:00 UTC15m
2026-04-14 AUB123 AUO → AUO Apr 14, 23:20 UTCApr 15, 00:50 UTC1h 30m

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 N247AU page for operator, model, and routing details .

Mode-S A24A13 frequently asked

What is Mode-S code A24A13?
A24A13 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N247AU.
Where is Mode-S A24A13 registered?
Mode-S code A24A13 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 A24A13 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 A24A13, octal 50445023, decimal 10,635,795.
What flights does A24A13 operate?
Mode-S A24A13 has broadcast 1 distinct callsign, including AUB123.