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
No current signal · last broadcast 5h ago
Flights observed
131
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A1635B.

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
AAY1355 Allegiant Air 9 2026-05-18
AAY1353 Allegiant Air 9 2026-05-18
AAY1368 Allegiant Air 6 2026-05-14
AAY2996 Allegiant Air 5 2026-05-18
AAY1369 Allegiant Air 5 2026-05-18
AAY3005 Allegiant Air 4 2026-05-08
AAY2977 Allegiant Air 4 2026-05-17
AAY1386 Allegiant Air 4 2026-05-14
AAY1351 Allegiant Air 4 2026-05-14
AAY3016 Allegiant Air 3 2026-04-30
AAY3015 Allegiant Air 3 2026-05-04
AAY2980 Allegiant Air 3 2026-05-17
AAY1352 Allegiant Air 3 2026-05-15
AAY3065 Allegiant Air 2 2026-05-21
AAY3012 Allegiant Air 2 2026-05-03
AAY3008 Allegiant Air 2 2026-05-07
AAY2987 Allegiant Air 2 2026-05-08
AAY2983 Allegiant Air 2 2026-05-15
AAY2979 Allegiant Air 2 2026-05-15
AAY2978 Allegiant Air 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AAY3092 GRR → VPS May 30, 02:20 UTCMay 30, 03:30 UTC1h 10m
2026-05-29 AAY3069 VPS → ICT May 29, 23:50 UTCMay 30, 01:15 UTC1h 25m
2026-05-29 AAY1479 CVG → VPS May 29, 21:20 UTCMay 29, 22:20 UTC1h 0m
2026-05-29 AAY3081 MDW → VPS May 29, 18:55 UTCMay 29, 20:05 UTC1h 10m
2026-05-29 AAY1490 MDW → VPS May 29, 15:45 UTCMay 29, 17:35 UTC1h 50m
2026-05-29 AAY3103 VPS → EWR May 29, 12:35 UTCMay 29, 14:30 UTC1h 55m
2026-05-29 AAY3105 VPS → EWR May 29, 03:50 UTCMay 29, 05:15 UTC1h 25m
2026-05-29 AAY1489 VPS → FNT May 29, 01:20 UTCMay 29, 02:50 UTC1h 30m
2026-05-28 AAY3108 BOS → VPS May 28, 22:20 UTCMay 29, 00:00 UTC1h 40m
2026-05-28 AAY1492 GRR → VPS May 28, 19:45 UTCMay 28, 21:15 UTC1h 30m
2026-05-28 AAY3066 EWR → VPS May 28, 15:25 UTCMay 28, 17:35 UTC2h 10m
2026-05-28 AAY3078 VPS → MDW May 28, 11:45 UTCMay 28, 13:40 UTC1h 55m
2026-05-26 AAY3112 CVG → VPS May 26, 01:40 UTCMay 26, 03:45 UTC2h 5m
2026-05-25 AAY3109 VPS → CVG May 25, 22:25 UTCMay 26, 00:24 UTC2h 0m
2026-05-25 AAY1467 VPS → SDF May 25, 17:00 UTCMay 25, 19:44 UTC2h 45m
2026-05-25 AAY3094 MDW → VPS May 25, 13:15 UTCMay 25, 15:35 UTC2h 20m
2026-05-25 AAY3114 MDW → VPS May 25, 02:05 UTCMay 25, 04:30 UTC2h 25m
2026-05-24 AAY3102 VPS → BOS May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 AAY1478 MDW → VPS May 24, 19:35 UTCMay 24, 21:15 UTC1h 40m
2026-05-24 AAY1450 BOS → VPS May 24, 16:45 UTCMay 24, 18:00 UTC1h 15m
2026-05-24 AAY1471 VPS → MSP May 24, 14:05 UTCMay 24, 15:25 UTC1h 20m
2026-05-23 AAY1491 OMA → VPS May 23, 03:35 UTCMay 23, 05:00 UTC1h 25m
2026-05-23 AAY1445 MDW → VPS May 23, 00:55 UTCMay 23, 02:30 UTC1h 35m
2026-05-22 AAY3082 OMA → VPS May 22, 20:45 UTCMay 22, 22:35 UTC1h 50m
2026-05-22 AAY3100 EWR → VPS May 22, 17:35 UTCMay 22, 19:10 UTC1h 35m
2026-05-22 AAY1448 BOS → VPS May 22, 14:10 UTCMay 22, 15:30 UTC1h 20m
2026-05-22 AAY3068 MDW → VPS May 22, 11:25 UTCMay 22, 12:45 UTC1h 20m
2026-05-22 AAY1474 SDF → VPS May 22, 02:35 UTCMay 22, 04:05 UTC1h 30m
2026-05-21 AAY3116 LCK → VPS May 21, 23:50 UTCMay 22, 01:10 UTC1h 20m
2026-05-21 AAY1451 VPS → MDW May 21, 20:55 UTCMay 21, 22:10 UTC1h 15m
2026-05-21 AAY3067 EWR → VPS May 21, 18:20 UTCMay 21, 19:45 UTC1h 25m
2026-05-21 AAY1449 VPS → EWR May 21, 15:55 UTCMay 21, 17:10 UTC1h 15m
2026-05-21 AAY3065 EWR → VPS May 21, 13:40 UTCMay 21, 14:45 UTC1h 5m
2026-05-20 AAY3070 VPS → EWR May 20, 21:45 UTCMay 20, 22:55 UTC1h 10m
2026-05-20 AAY3065 EWR → VPS May 20, 19:25 UTCMay 20, 20:35 UTC1h 10m
2026-05-20 AAY9189 LAS → AZA May 20, 13:15 UTCMay 20, 14:15 UTC1h 0m
2026-05-18 AAY1369 SYR → SRQ May 18, 23:25 UTCMay 19, 01:45 UTC2h 20m
2026-05-18 AAY2996 SRQ → BWI May 18, 19:50 UTCMay 18, 22:20 UTC2h 30m
2026-05-18 AAY1353 RFD → SRQ May 18, 15:40 UTCMay 18, 18:25 UTC2h 45m
2026-05-18 AAY1355 BOS → SRQ May 18, 11:35 UTCMay 18, 14:20 UTC2h 45m
2026-05-17 AAY1376 SRQ → SBN May 17, 22:15 UTCMay 18, 00:10 UTC1h 55m
2026-05-17 AAY2977 CAK → SRQ May 17, 19:01 UTCMay 17, 21:01 UTC2h 0m
2026-05-17 AAY2980 SRQ → BLV May 17, 15:55 UTCMay 17, 17:45 UTC1h 50m
2026-05-17 AAY2978 PIA → SRQ May 17, 12:35 UTCMay 17, 14:40 UTC2h 5m
2026-05-15 AAY2977 CAK → SRQ May 15, 21:35 UTCMay 15, 23:30 UTC1h 55m
2026-05-15 AAY1367 LCK → MYR May 15, 18:20 UTCMay 15, 20:20 UTC2h 0m
2026-05-15 AAY2979 BOS → SRQ May 15, 15:35 UTCMay 15, 17:15 UTC1h 40m
2026-05-15 AAY2983 SRQ → MSP May 15, 12:15 UTCMay 15, 14:05 UTC1h 50m
2026-05-15 AAY1352 VPS → CVG May 15, 00:40 UTCMay 15, 03:20 UTC2h 40m
2026-05-14 AAY1351 MSP → SRQ May 14, 20:35 UTCMay 14, 23:00 UTC2h 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 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?
No active broadcast right now. Last signal was 5h ago.
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 AAY1355, AAY1353, AAY1368, AAY2996, AAY1369.