Apparatus

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sensors Mode-S transponder

A1DC31

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N219NV · AIRBUS A-320 · operated by SUNRISE ASSET MANAGEMENT LLC

Hex
A1DC31
Octal
50356061
Decimal
10,607,665
Country
US
Tail
N219NV
Type
A320
Broadcasting now · callsign AAY399 · 32,000 ft
Flights observed
113
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A1DC31 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1DC31 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
AAY9203 Allegiant Air 5 2026-05-24
AAY377 Allegiant Air 4 2026-05-28
AAY9202 Allegiant Air 3 2026-05-22
AAY9200 Allegiant Air 3 2026-05-21
AAY3180 Allegiant Air 3 2026-05-24
AAY2796 Allegiant Air 3 2026-04-25
AAY2780 Allegiant Air 3 2026-04-25
AAY1178 Allegiant Air 3 2026-04-24
AAY1155 Allegiant Air 3 2026-04-27
AAY430 Allegiant Air 2 2026-05-03
AAY418 Allegiant Air 2 2026-05-03
AAY406 Allegiant Air 2 2026-05-15
AAY403 Allegiant Air 2 2026-05-03
AAY393 Allegiant Air 2 2026-05-28
AAY391 Allegiant Air 2 2026-05-15
AAY379 Allegiant Air 2 2026-05-15
AAY2813 Allegiant Air 2 2026-05-23
AAY2790 Allegiant Air 2 2026-04-24
AAY2781 Allegiant Air 2 2026-04-30
AAY2724 Allegiant Air 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AAY362 CVG → CHS May 29, 22:50 UTCMay 30, 00:00 UTC1h 10m
2026-05-29 AAY422 CVG → PIE May 29, 20:30 UTCMay 29, 21:40 UTC1h 10m
2026-05-29 AAY361 SFB → CVG May 29, 17:55 UTCMay 29, 19:00 UTC1h 5m
2026-05-29 AAY2026 LAS → CVG May 29, 15:15 UTCMay 29, 16:40 UTC1h 25m
2026-05-29 AAY415 CVG → SRQ May 29, 12:25 UTCMay 29, 13:55 UTC1h 30m
2026-05-28 AAY412 EWR → AVL May 28, 22:15 UTCMay 29, 02:30 UTC4h 15m
2026-05-28 AAY393 IAD → JAX May 28, 16:45 UTCMay 28, 20:50 UTC4h 5m
2026-05-28 AAY377 MYR → SYR May 28, 14:00 UTCMay 28, 15:40 UTC1h 40m
2026-05-28 AAY404 MYR → CVG May 28, 10:55 UTCMay 28, 12:40 UTC1h 45m
2026-05-26 AAY402 PGD → CVG May 26, 01:34 UTCMay 26, 03:00 UTC1h 25m
2026-05-25 AAY377 MYR → SYR May 25, 22:30 UTCMay 26, 00:09 UTC1h 40m
2026-05-25 AAY366 JAX → IAD May 25, 19:44 UTCMay 25, 21:15 UTC1h 30m
2026-05-25 AAY374 EWR → CVG May 25, 16:50 UTCMay 25, 18:30 UTC1h 40m
2026-05-25 AAY389 MYR → CVG May 25, 14:15 UTCMay 25, 15:55 UTC1h 40m
2026-05-25 AAY2004 VPS → CVG May 25, 11:20 UTCMay 25, 13:10 UTC1h 50m
2026-05-25 AAY9211 ALB → CVG May 25, 04:10 UTCMay 25, 05:15 UTC1h 5m
2026-05-25 AAY1558 ALB → PGD May 25, 01:55 UTCMay 25, 03:25 UTC1h 30m
2026-05-24 AAY3180 ATW → PIE May 24, 23:00 UTCMay 24, 23:30 UTC30m
2026-05-24 AAY3180 ATW → PIE May 24, 20:45 UTCMay 24, 21:50 UTC1h 5m
2026-05-24 AAY1557 BNA → ATW May 24, 17:40 UTCMay 24, 19:35 UTC1h 55m
2026-05-24 AAY1556 ATW → BNA May 24, 14:10 UTCMay 24, 16:25 UTC2h 15m
2026-05-24 AAY9203 TYS → PIE May 24, 11:25 UTCMay 24, 13:30 UTC2h 5m
2026-05-23 AAY1164 SAV → MDW May 23, 23:20 UTCMay 24, 00:35 UTC1h 15m
2026-05-23 AAY1181 SAV → CVG May 23, 21:05 UTCMay 23, 22:15 UTC1h 10m
2026-05-23 AAY2794 CVG → SAV May 23, 19:05 UTCMay 23, 20:05 UTC1h 0m
2026-05-23 AAY2813 SAV → GRR May 23, 16:50 UTCMay 23, 18:05 UTC1h 15m
2026-05-23 AAY416 CVG → LAS May 23, 12:10 UTCMay 23, 13:25 UTC1h 15m
2026-05-22 AAY9209 VPS → SRQ May 22, 23:10 UTCMay 23, 00:20 UTC1h 10m
2026-05-22 AAY9203 TYS → PIE May 22, 21:35 UTCMay 22, 22:15 UTC40m
2026-05-22 AAY2465 RFD → PGD May 22, 18:40 UTCMay 22, 20:55 UTC2h 15m
2026-05-22 AAY2478 BGR → PGD May 22, 15:00 UTCMay 22, 17:15 UTC2h 15m
2026-05-22 AAY9202 ABE → GRR May 22, 13:20 UTCMay 22, 14:05 UTC45m
2026-05-22 AAY1558 ALB → PGD May 22, 00:05 UTCMay 22, 02:50 UTC2h 45m
2026-05-21 AAY3180 ATW → PIE May 21, 20:10 UTCMay 21, 22:40 UTC2h 30m
2026-05-21 AAY1557 BNA → ATW May 21, 16:10 UTCMay 21, 18:15 UTC2h 5m
2026-05-21 AAY1556 ATW → BNA May 21, 12:55 UTCMay 21, 15:10 UTC2h 15m
2026-05-21 AAY9200 CVG → ABE May 21, 10:45 UTCMay 21, 11:50 UTC1h 5m
2026-05-20 AAY9200 CVG → ABE May 20, 16:40 UTCMay 20, 18:25 UTC1h 45m
2026-05-19 AAY9202 ABE → GRR May 19, 03:00 UTCMay 19, 03:40 UTC40m
2026-05-18 AAY2140 PBG → FLL May 18, 23:55 UTCMay 19, 02:10 UTC2h 15m
2026-05-18 AAY2142 EWR → SAV May 18, 20:25 UTCMay 18, 22:45 UTC2h 20m
2026-05-18 AAY9201 PIT → CVG May 18, 17:25 UTCMay 18, 18:10 UTC45m
2026-05-17 AAY9200 CVG → ABE May 17, 14:01 UTCMay 17, 15:45 UTC1h 45m
2026-05-15 AAY379 CVG → CHS May 15, 23:50 UTCMay 16, 02:05 UTC2h 15m
2026-05-15 AAY406 ORF → CVG May 15, 20:30 UTCMay 15, 22:35 UTC2h 5m
2026-05-15 AAY391 CVG → VPS May 15, 16:10 UTCMay 15, 18:30 UTC2h 20m
2026-05-15 AAY377 MYR → SYR May 15, 12:40 UTCMay 15, 14:45 UTC2h 5m
2026-05-10 AAY9300 EWR → CVG May 10, 17:40 UTCMay 10, 19:00 UTC1h 20m
2026-05-08 AAY369 SFB → CVG May 8, 17:30 UTCMay 8, 19:00 UTC1h 30m
2026-05-08 AAY393 IAD → JAX May 8, 14:35 UTCMay 8, 16:00 UTC1h 25m

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 N219NV page for operator, model, and routing details .

Mode-S A1DC31 frequently asked

What is Mode-S code A1DC31?
A1DC31 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N219NV.
Where is Mode-S A1DC31 registered?
Mode-S code A1DC31 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 A1DC31 broadcasting right now?
Yes. Mode-S A1DC31 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1DC31, octal 50356061, decimal 10,607,665.
What flights does A1DC31 operate?
Mode-S A1DC31 has broadcast 20 distinct callsigns, including AAY9203, AAY377, AAY9202, AAY9200, AAY3180.