Apparatus

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sensors Mode-S transponder

A24AA1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N247GL · BEECH 1900 · operated by ALPINE AVIATION INC

Hex
A24AA1
Octal
50445241
Decimal
10,635,937
Country
US
Tail
N247GL
Type
B190
No current signal · last broadcast 10h ago
Flights observed
130
Distinct callsigns
12
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A24AA1.

Country allocation

The ICAO 24-bit address A24AA1 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 12 distinct

Callsign Airline Flights Last seen
AIP1566 - 37 2026-06-26
AIP1565 - 37 2026-06-26
AIP1541 - 12 2026-07-11
AIP1542 - 11 2026-07-10
AIP1408 Alpine Air Express 7 2026-05-26
AIP1407 Alpine Air Express 7 2026-05-26
AIP1588 Alpine Air Express 6 2026-06-10
AIP1587 Alpine Air Express 5 2026-06-11
AIP1564 - 3 2026-07-14
AIP1563 Alpine Air Express 3 2026-06-12
AIP1578 Alpine Air Express 1 2026-06-11
4555 - 1 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AIP1564 - Jul 14, 00:20 UTCJul 14, 00:35 UTC15m
2026-07-13 AIP1564 - Jul 13, 21:35 UTCJul 13, 21:50 UTC15m
2026-07-11 AIP1541 - Jul 11, 00:30 UTCJul 11, 00:50 UTC20m
2026-07-10 AIP1542 - Jul 10, 12:20 UTCJul 10, 13:00 UTC40m
2026-07-10 AIP1541 - Jul 10, 00:25 UTCJul 10, 00:50 UTC25m
2026-07-09 AIP1542 - Jul 9, 11:50 UTCJul 9, 12:30 UTC40m
2026-07-09 AIP1541 - Jul 9, 00:35 UTCJul 9, 01:00 UTC25m
2026-07-08 AIP1542 - Jul 8, 12:30 UTCJul 8, 13:10 UTC40m
2026-07-08 AIP1541 - Jul 8, 00:35 UTCJul 8, 01:15 UTC40m
2026-07-07 AIP1542 - Jul 7, 11:35 UTCJul 7, 12:20 UTC45m
2026-07-07 AIP1541 - Jul 7, 00:35 UTCJul 7, 00:55 UTC20m
2026-07-06 AIP1542 - Jul 6, 21:30 UTCJul 6, 22:05 UTC35m
2026-06-26 AIP1566 - Jun 26, 23:49 UTCJun 27, 00:25 UTC35m
2026-06-26 AIP1565 - Jun 26, 14:39 UTCJun 26, 15:15 UTC35m
2026-06-25 AIP1566 - Jun 25, 23:55 UTCJun 26, 00:35 UTC40m
2026-06-25 AIP1565 - Jun 25, 16:29 UTCJun 25, 17:09 UTC40m
2026-06-24 AIP1566 - Jun 24, 23:59 UTCJun 25, 00:44 UTC45m
2026-06-24 AIP1565 - Jun 24, 12:25 UTCJun 24, 13:05 UTC40m
2026-06-23 AIP1566 - Jun 23, 23:50 UTCJun 24, 00:25 UTC35m
2026-06-23 AIP1565 - Jun 23, 11:54 UTCJun 23, 12:29 UTC35m
2026-06-22 AIP1566 - Jun 22, 23:50 UTCJun 23, 00:30 UTC40m
2026-06-22 AIP1565 - Jun 22, 21:25 UTCJun 22, 21:59 UTC35m
2026-06-20 AIP1541 - Jun 20, 00:29 UTCJun 20, 00:49 UTC20m
2026-06-19 AIP1542 - Jun 19, 11:49 UTCJun 19, 12:25 UTC35m
2026-06-19 AIP1541 - Jun 19, 00:49 UTCJun 19, 01:10 UTC20m
2026-06-18 AIP1542 - Jun 18, 17:25 UTCJun 18, 17:45 UTC20m
2026-06-18 AIP1541 - Jun 18, 00:45 UTCJun 18, 01:10 UTC25m
2026-06-17 AIP1542 - Jun 17, 12:10 UTCJun 17, 12:45 UTC35m
2026-06-17 AIP1541 - Jun 17, 00:40 UTCJun 17, 01:05 UTC25m
2026-06-16 AIP1542 - Jun 16, 11:45 UTCJun 16, 12:20 UTC35m
2026-06-16 AIP1541 - Jun 16, 00:55 UTCJun 16, 01:15 UTC20m
2026-06-15 AIP1542 - Jun 15, 21:30 UTCJun 15, 22:00 UTC30m
2026-06-13 4555 - Jun 13, 00:35 UTCJun 13, 00:50 UTC15m
2026-06-12 AIP1563 BIS → TVF Jun 12, 22:50 UTCJun 12, 23:10 UTC20m
2026-06-12 AIP1563 BIS → TVF Jun 12, 12:20 UTCJun 12, 12:55 UTC35m
2026-06-12 AIP1564 TVF → FAR Jun 12, 00:20 UTCJun 12, 00:35 UTC15m
2026-06-11 AIP1563 BIS → TVF Jun 11, 22:50 UTCJun 11, 23:15 UTC25m
2026-06-11 AIP1578 FSD → ABR Jun 11, 11:50 UTCJun 11, 12:20 UTC30m
2026-06-11 AIP1587 RAP → FSD Jun 11, 00:45 UTCJun 11, 01:35 UTC50m
2026-06-10 AIP1588 FSD → RAP Jun 10, 11:35 UTCJun 10, 12:40 UTC1h 5m
2026-06-10 AIP1587 RAP → FSD Jun 10, 01:20 UTCJun 10, 02:00 UTC40m
2026-06-09 AIP1588 FSD → RAP Jun 9, 11:35 UTCJun 9, 12:30 UTC55m
2026-06-06 AIP1587 RAP → FSD Jun 6, 00:55 UTCJun 6, 01:40 UTC45m
2026-06-05 AIP1588 FSD → RAP Jun 5, 11:20 UTCJun 5, 12:25 UTC1h 5m
2026-06-05 AIP1587 RAP → FSD Jun 5, 00:45 UTCJun 5, 01:35 UTC50m
2026-06-04 AIP1588 FSD → RAP Jun 4, 11:20 UTCJun 4, 12:20 UTC1h 0m
2026-06-04 AIP1587 RAP → FSD Jun 4, 00:50 UTCJun 4, 01:55 UTC1h 5m
2026-06-03 AIP1588 FSD → RAP Jun 3, 13:05 UTCJun 3, 13:20 UTC15m
2026-06-03 AIP1588 FSD → RAP Jun 3, 12:10 UTCJun 3, 12:35 UTC25m
2026-05-30 AIP1541 BIS → FAR May 30, 20:45 UTCMay 30, 21:40 UTC55m

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 N247GL page for operator, model, and routing details .

Mode-S A24AA1 frequently asked

What is Mode-S code A24AA1?
A24AA1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N247GL.
Where is Mode-S A24AA1 registered?
Mode-S code A24AA1 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 A24AA1 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A24AA1, octal 50445241, decimal 10,635,937.
What flights does A24AA1 operate?
Mode-S A24AA1 has broadcast 12 distinct callsigns, including AIP1566, AIP1565, AIP1541, AIP1542, AIP1408.