Apparatus

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sensors Mode-S transponder

A1635B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N189NV · operated by SUNRISE ASSET MANAGEMENT LLC

Hex
A1635B
Octal
50261533
Decimal
10,576,731
Country
US
Tail
N189NV
Type
A320
Broadcasting now · callsign AAY4236 · 11,150 ft
Flights observed
367
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:25 UTC

Current position

A1635B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1635B 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
AAY3065 Allegiant Air 15 2026-07-26
AAY3108 Allegiant Air 9 2026-07-24
AAY1355 Allegiant Air 9 2026-05-18
AAY1353 Allegiant Air 9 2026-05-18
AAY1473 Allegiant Air 8 2026-07-24
AAY3110 Allegiant Air 6 2026-07-23
AAY3070 - 6 2026-07-20
AAY3067 Allegiant Air 6 2026-07-26
AAY1449 Allegiant Air 6 2026-07-26
AAY1368 Allegiant Air 6 2026-05-14
AAY3117 Allegiant Air 5 2026-07-24
AAY3116 Allegiant Air 5 2026-07-20
AAY3082 Allegiant Air 5 2026-07-24
AAY3078 - 5 2026-06-28
AAY2996 Allegiant Air 5 2026-05-18
AAY1452 Allegiant Air 5 2026-07-16
AAY1445 Allegiant Air 5 2026-06-25
AAY1443 Allegiant Air 5 2026-07-05
AAY1369 Allegiant Air 5 2026-05-18
AAY3112 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAY1453 VPS → OKC Jul 26, 21:10 UTCJul 26, 22:25 UTC1h 15m
2026-07-26 AAY3067 EWR → VPS Jul 26, 18:25 UTCJul 26, 20:05 UTC1h 40m
2026-07-26 AAY1449 VPS → EWR Jul 26, 15:40 UTCJul 26, 16:55 UTC1h 15m
2026-07-26 AAY3065 EWR → VPS Jul 26, 13:10 UTCJul 26, 14:35 UTC1h 25m
2026-07-25 AAY9389 FAR → AZA Jul 25, 21:35 UTCJul 25, 22:55 UTC1h 20m
2026-07-25 AAY1454 CVG → VPS Jul 25, 01:35 UTCJul 25, 03:00 UTC1h 25m
2026-07-24 AAY3082 OMA → VPS Jul 24, 22:45 UTCJul 25, 00:25 UTC1h 40m
2026-07-24 AAY3117 XNA → VPS Jul 24, 19:10 UTCJul 24, 20:55 UTC1h 45m
2026-07-24 AAY1473 SGF → VPS Jul 24, 14:05 UTCJul 24, 15:45 UTC1h 40m
2026-07-24 AAY3108 BOS → VPS Jul 24, 11:10 UTCJul 24, 12:55 UTC1h 45m
2026-07-24 AAY1482 VPS → EWR Jul 24, 02:15 UTCJul 24, 03:35 UTC1h 20m
2026-07-23 AAY3110 BOS → VPS Jul 23, 23:35 UTCJul 24, 01:05 UTC1h 30m
2026-07-23 AAY3107 VPS → BOS Jul 23, 20:30 UTCJul 23, 22:15 UTC1h 45m
2026-07-23 AAY3104 - Jul 23, 17:20 UTCJul 23, 19:15 UTC1h 55m
2026-07-23 AAY3108 BOS → VPS Jul 23, 14:10 UTCJul 23, 15:45 UTC1h 35m
2026-07-23 AAY3079 VPS → EWR Jul 23, 11:15 UTCJul 23, 12:50 UTC1h 35m
2026-07-21 AAY3110 BOS → VPS Jul 21, 19:30 UTCJul 21, 21:00 UTC1h 30m
2026-07-21 AAY3106 EVV → VPS Jul 21, 16:15 UTCJul 21, 17:55 UTC1h 40m
2026-07-21 AAY1446 VPS → BOS Jul 21, 02:30 UTCJul 21, 04:10 UTC1h 40m
2026-07-20 AAY1480 VPS → SDF Jul 20, 23:20 UTCJul 21, 01:20 UTC1h 59m
2026-07-20 AAY3070 - Jul 20, 18:45 UTCJul 20, 20:00 UTC1h 15m
2026-07-20 AAY3065 - Jul 20, 16:20 UTCJul 20, 17:45 UTC1h 25m
2026-07-20 AAY1457 VPS → CVG Jul 20, 13:45 UTCJul 20, 14:35 UTC50m
2026-07-20 AAY1487 GRR → VPS Jul 20, 11:35 UTCJul 20, 12:35 UTC1h 0m
2026-07-20 AAY3115 EWR → VPS Jul 20, 03:35 UTCJul 20, 05:00 UTC1h 25m
2026-07-20 AAY3116 LCK → VPS Jul 20, 01:05 UTCJul 20, 02:30 UTC1h 25m
2026-07-19 AAY3081 MDW → VPS Jul 19, 19:45 UTCJul 19, 22:30 UTC2h 45m
2026-07-19 AAY3102 - Jul 19, 16:15 UTCJul 19, 18:00 UTC1h 45m
2026-07-19 AAY3088 - Jul 19, 13:20 UTCJul 19, 15:05 UTC1h 45m
2026-07-19 AAY1460 MDW → VPS Jul 19, 03:35 UTCJul 19, 05:10 UTC1h 35m
2026-07-19 AAY3108 - Jul 19, 01:20 UTCJul 19, 02:25 UTC1h 5m
2026-07-18 AAY1464 VPS → EWR Jul 18, 23:00 UTCJul 18, 23:55 UTC55m
2026-07-18 AAY3095 VPS → SDF Jul 18, 19:20 UTCJul 18, 20:50 UTC1h 30m
2026-07-18 AAY1455 - Jul 18, 15:10 UTCJul 18, 17:55 UTC2h 45m
2026-07-18 AAY3100 EWR → VPS Jul 18, 11:15 UTCJul 18, 13:50 UTC2h 35m
2026-07-18 AAY3074 CVG → SRQ Jul 18, 02:14 UTCJul 18, 04:10 UTC1h 56m
2026-07-17 AAY3094 MDW → VPS Jul 17, 23:20 UTCJul 18, 01:15 UTC1h 55m
2026-07-17 AAY3082 OMA → VPS Jul 17, 20:20 UTCJul 17, 22:10 UTC1h 50m
2026-07-17 AAY3117 - Jul 17, 17:25 UTCJul 17, 18:55 UTC1h 30m
2026-07-17 AAY1473 - Jul 17, 14:10 UTCJul 17, 15:55 UTC1h 45m
2026-07-17 AAY3108 - Jul 17, 11:15 UTCJul 17, 12:55 UTC1h 40m
2026-07-16 AAY1452 BOS → VPS Jul 16, 21:40 UTCJul 16, 23:15 UTC1h 35m
2026-07-16 AAY3067 - Jul 16, 18:44 UTCJul 16, 20:15 UTC1h 30m
2026-07-16 AAY1449 - Jul 16, 15:49 UTCJul 16, 17:14 UTC1h 25m
2026-07-16 AAY3065 - Jul 16, 13:25 UTCJul 16, 14:35 UTC1h 10m
2026-07-14 AAY3074 - Jul 14, 02:20 UTCJul 14, 04:15 UTC1h 55m
2026-07-13 AAY3094 - Jul 13, 23:00 UTCJul 14, 01:10 UTC2h 10m
2026-07-13 AAY3070 - Jul 13, 18:40 UTCJul 13, 20:05 UTC1h 25m
2026-07-13 AAY3065 - Jul 13, 16:15 UTCJul 13, 17:40 UTC1h 25m
2026-07-13 AAY1457 - Jul 13, 13:50 UTCJul 13, 14:55 UTC1h 5m

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 N189NV page for operator, model, and routing details .

Mode-S A1635B frequently asked

What is Mode-S code A1635B?
A1635B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N189NV.
Where is Mode-S A1635B registered?
Mode-S code A1635B 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 A1635B broadcasting right now?
Yes. Mode-S A1635B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1635B, octal 50261533, decimal 10,576,731.
What flights does A1635B operate?
Mode-S A1635B has broadcast 20 distinct callsigns, including AAY3065, AAY3108, AAY1355, AAY1353, AAY1473.