Apparatus

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sensors Mode-S transponder

A2AB73

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N271NV · AIRBUS A-320 · operated by ALLEGIANT AIR LLC

Hex
A2AB73
Octal
50525563
Decimal
10,660,723
Country
US
Tail
N271NV
Type
A320
No current signal · last broadcast 3h ago
Flights observed
304
Distinct callsigns
20
Country
US
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S A2AB73.

Country allocation

The ICAO 24-bit address A2AB73 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 20 distinct

Callsign Airline Flights Last seen
AAY464 - 7 2026-07-10
AAY461 - 7 2026-07-07
AAY459 - 6 2026-07-13
AAY454 - 6 2026-07-10
AAY474 - 5 2026-07-05
AAY468 - 5 2026-07-14
AAY453 - 5 2026-07-08
AAY446 - 5 2026-07-10
AAY1401 Allegiant Air 5 2026-04-20
AAY1398 Allegiant Air 5 2026-04-18
AAY578 Allegiant Air 4 2026-05-25
AAY574 Allegiant Air 4 2026-05-17
AAY555 Allegiant Air 4 2026-05-23
AAY542 Allegiant Air 4 2026-05-27
AAY472 Allegiant Air 4 2026-06-30
AAY471 - 4 2026-07-07
AAY449 - 4 2026-07-08
AAY447 - 4 2026-07-10
AAY432 - 4 2026-07-06
AAY431 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAY468 PIE → DSM Jul 14, 01:20 UTCJul 14, 03:45 UTC2h 25m
2026-07-13 AAY2072 - Jul 13, 21:40 UTCJul 14, 00:15 UTC2h 35m
2026-07-13 AAY480 - Jul 13, 17:40 UTCJul 13, 20:10 UTC2h 30m
2026-07-13 AAY457 - Jul 13, 14:00 UTCJul 13, 16:30 UTC2h 30m
2026-07-13 AAY459 - Jul 13, 01:40 UTCJul 13, 03:50 UTC2h 10m
2026-07-12 AAY462 - Jul 12, 22:10 UTCJul 13, 00:30 UTC2h 20m
2026-07-12 AAY456 BOS → DSM Jul 12, 18:20 UTCJul 12, 20:55 UTC2h 35m
2026-07-12 AAY463 - Jul 12, 14:30 UTCJul 12, 16:55 UTC2h 25m
2026-07-10 AAY454 - Jul 10, 22:05 UTCJul 10, 23:50 UTC1h 45m
2026-07-10 AAY464 - Jul 10, 18:50 UTCJul 10, 20:55 UTC2h 5m
2026-07-10 AAY447 - Jul 10, 15:20 UTCJul 10, 17:20 UTC2h 0m
2026-07-10 AAY446 - Jul 10, 12:05 UTCJul 10, 14:05 UTC2h 0m
2026-07-10 AAY459 - Jul 10, 03:00 UTCJul 10, 05:30 UTC2h 30m
2026-07-09 AAY462 - Jul 9, 22:15 UTCJul 10, 00:35 UTC2h 20m
2026-07-09 AAY448 AUS → DSM Jul 9, 19:15 UTCJul 9, 21:00 UTC1h 45m
2026-07-09 AAY439 - Jul 9, 16:10 UTCJul 9, 17:55 UTC1h 45m
2026-07-09 AAY452 - Jul 9, 13:55 UTCJul 9, 15:10 UTC1h 15m
2026-07-09 AAY441 - Jul 9, 11:15 UTCJul 9, 12:30 UTC1h 15m
2026-07-08 AAY453 - Jul 8, 17:00 UTCJul 8, 19:20 UTC2h 20m
2026-07-08 AAY449 - Jul 8, 13:10 UTCJul 8, 15:40 UTC2h 30m
2026-07-07 AAY461 PDX → DSM Jul 7, 18:45 UTCJul 7, 21:40 UTC2h 55m
2026-07-07 AAY471 - Jul 7, 14:05 UTCJul 7, 17:20 UTC3h 15m
2026-07-07 AAY443 BUR → DSM Jul 7, 00:20 UTCJul 7, 03:20 UTC3h 0m
2026-07-06 AAY451 - Jul 6, 19:40 UTCJul 6, 22:50 UTC3h 10m
2026-07-06 AAY432 EWR → DSM Jul 6, 16:10 UTCJul 6, 18:30 UTC2h 20m
2026-07-06 AAY431 - Jul 6, 12:45 UTCJul 6, 14:55 UTC2h 10m
2026-07-06 AAY459 - Jul 6, 04:55 UTCJul 6, 07:15 UTC2h 20m
2026-07-05 AAY462 - Jul 5, 23:40 UTCJul 6, 01:55 UTC2h 15m
2026-07-05 AAY2055 - Jul 5, 17:50 UTCJul 5, 20:50 UTC3h 0m
2026-07-05 AAY474 - Jul 5, 13:25 UTCJul 5, 16:30 UTC3h 5m
2026-07-05 AAY476 PIE → DSM Jul 5, 01:15 UTCJul 5, 03:35 UTC2h 20m
2026-07-04 AAY458 - Jul 4, 21:30 UTCJul 5, 00:15 UTC2h 45m
2026-07-04 AAY441 - Jul 4, 17:45 UTCJul 4, 20:15 UTC2h 30m
2026-07-04 AAY467 - Jul 4, 14:25 UTCJul 4, 16:50 UTC2h 25m
2026-07-04 AAY468 PIE → DSM Jul 4, 05:15 UTCJul 4, 08:15 UTC3h 0m
2026-07-04 AAY2072 - Jul 4, 01:35 UTCJul 4, 04:05 UTC2h 30m
2026-07-03 AAY454 - Jul 3, 22:15 UTCJul 4, 00:00 UTC1h 45m
2026-07-03 AAY464 DSM → SRQ Jul 3, 19:05 UTCJul 3, 21:05 UTC2h 0m
2026-07-03 AAY447 - Jul 3, 16:00 UTCJul 3, 17:55 UTC1h 55m
2026-07-03 AAY446 - Jul 3, 13:00 UTCJul 3, 14:55 UTC1h 55m
2026-07-03 AAY461 PDX → DSM Jul 3, 01:00 UTCJul 3, 04:05 UTC3h 5m
2026-07-02 AAY471 - Jul 2, 20:15 UTCJul 2, 23:40 UTC3h 25m
2026-07-02 AAY456 BOS → DSM Jul 2, 16:10 UTCJul 2, 18:45 UTC2h 35m
2026-07-02 AAY463 - Jul 2, 12:40 UTCJul 2, 15:00 UTC2h 20m
2026-07-01 AAY453 - Jul 1, 17:00 UTCJul 1, 19:15 UTC2h 15m
2026-07-01 AAY449 - Jul 1, 13:05 UTCJul 1, 15:55 UTC2h 50m
2026-06-30 AAY472 AUS → DSM Jun 30, 01:55 UTCJun 30, 04:15 UTC2h 20m
2026-06-29 AAY2061 - Jun 29, 22:15 UTCJun 30, 00:39 UTC2h 25m
2026-06-29 AAY346 - Jun 29, 19:39 UTCJun 29, 20:59 UTC1h 20m
2026-06-29 AAY358 DSM → BNA Jun 29, 17:14 UTCJun 29, 18:34 UTC1h 20m

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 N271NV page for operator, model, and routing details .

Mode-S A2AB73 frequently asked

What is Mode-S code A2AB73?
A2AB73 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N271NV.
Where is Mode-S A2AB73 registered?
Mode-S code A2AB73 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 A2AB73 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2AB73, octal 50525563, decimal 10,660,723.
What flights does A2AB73 operate?
Mode-S A2AB73 has broadcast 20 distinct callsigns, including AAY464, AAY461, AAY459, AAY454, AAY474.